SQLite

Check-in [601c335463]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Many small changes to ensure memory is not leaked after malloc() fails. (CVS 2808)
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 601c335463aaabc2e9918e4b9298cff6161be5c4
User & Date: danielk1977 2005-12-09 14:25:08.000
Context
2005-12-09
14:39
Define the sqliteMalloc() macro differently to avoid a compiler warning. (CVS 2809) (check-in: 3d177bde71 user: danielk1977 tags: trunk)
14:25
Many small changes to ensure memory is not leaked after malloc() fails. (CVS 2808) (check-in: 601c335463 user: danielk1977 tags: trunk)
02:35
Add more stress testing to autovacuum in an (unsuccessful) attempt to reproduce a reported problem. Even though these tests did not uncover anything amiss, extra tests never hurt... (CVS 2807) (check-in: d8a8933ff3 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/attach.c.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
/*
** 2003 April 6
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains code used to implement the ATTACH and DETACH commands.
**
** $Id: attach.c,v 1.36 2005/12/06 17:19:11 danielk1977 Exp $
*/
#include "sqliteInt.h"

/*
** Resolve an expression that was part of an ATTACH or DETACH statement. This
** is slightly different from resolving a normal SQL expression, because simple
** identifiers are treated as strings, not possible column names or aliases.













|







1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
/*
** 2003 April 6
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains code used to implement the ATTACH and DETACH commands.
**
** $Id: attach.c,v 1.37 2005/12/09 14:25:08 danielk1977 Exp $
*/
#include "sqliteInt.h"

/*
** Resolve an expression that was part of an ATTACH or DETACH statement. This
** is slightly different from resolving a normal SQL expression, because simple
** identifiers are treated as strings, not possible column names or aliases.
257
258
259
260
261
262
263


264
265
266
267
268


269

270
271
272
273
274
275
276
  int rc;
  NameContext sName;
  Vdbe *v;
  FuncDef *pFunc;
  sqlite3* db = pParse->db;

#ifndef SQLITE_OMIT_AUTHORIZATION


  char *zAuthArg = sqlite3NameFromToken(&pAuthArg->span);
  if( !zAuthArg ){
    goto attach_end;
  }
  if( sqlite3AuthCheck(pParse, type, zAuthArg, 0, 0)!=SQLITE_OK ){


    goto attach_end;

  }
#endif /* SQLITE_OMIT_AUTHORIZATION */

  memset(&sName, 0, sizeof(NameContext));
  sName.pParse = pParse;

  if( 







>
>
|
|
|
|
|
>
>
|
>







257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
  int rc;
  NameContext sName;
  Vdbe *v;
  FuncDef *pFunc;
  sqlite3* db = pParse->db;

#ifndef SQLITE_OMIT_AUTHORIZATION
  assert( sqlite3Tsd()->mallocFailed || pAuthArg );
  if( pAuthArg ){
    char *zAuthArg = sqlite3NameFromToken(&pAuthArg->span);
    if( !zAuthArg ){
      goto attach_end;
    }
    rc = sqlite3AuthCheck(pParse, type, zAuthArg, 0, 0);
    sqliteFree(zAuthArg);
    if(rc!=SQLITE_OK ){
      goto attach_end;
    }
  }
#endif /* SQLITE_OMIT_AUTHORIZATION */

  memset(&sName, 0, sizeof(NameContext));
  sName.pParse = pParse;

  if( 
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
    sqlite3VdbeAddOp(v, OP_Expire, (type==SQLITE_ATTACH), 0);
  }
  
attach_end:
  sqlite3ExprDelete(pFilename);
  sqlite3ExprDelete(pDbname);
  sqlite3ExprDelete(pKey);
  sqliteFree(zAuthArg);
}

/*
** Called by the parser to compile a DETACH statement.
**
**     DETACH pDbname
*/







<







305
306
307
308
309
310
311

312
313
314
315
316
317
318
    sqlite3VdbeAddOp(v, OP_Expire, (type==SQLITE_ATTACH), 0);
  }
  
attach_end:
  sqlite3ExprDelete(pFilename);
  sqlite3ExprDelete(pDbname);
  sqlite3ExprDelete(pKey);

}

/*
** Called by the parser to compile a DETACH statement.
**
**     DETACH pDbname
*/
Changes to src/os_unix.c.
629
630
631
632
633
634
635

636
637
638
639
640
641
642
** On success, write the file handle into *id and return SQLITE_OK.
**
** On failure, return SQLITE_CANTOPEN.
*/
static int unixOpenExclusive(const char *zFilename, OsFile **pId, int delFlag){
  int rc;
  unixFile f;


  assert( 0==*pId );
  if( access(zFilename, 0)==0 ){
    return SQLITE_CANTOPEN;
  }
  SET_THREADID(&f);
  f.dirfd = -1;







>







629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
** On success, write the file handle into *id and return SQLITE_OK.
**
** On failure, return SQLITE_CANTOPEN.
*/
static int unixOpenExclusive(const char *zFilename, OsFile **pId, int delFlag){
  int rc;
  unixFile f;
  int fd;

  assert( 0==*pId );
  if( access(zFilename, 0)==0 ){
    return SQLITE_CANTOPEN;
  }
  SET_THREADID(&f);
  f.dirfd = -1;
1481
1482
1483
1484
1485
1486
1487


1488
1489
1490
1491
1492
1493
1494
** OsFile.  If we run out of memory, close the file and return NULL.
*/
static int allocateUnixFile(unixFile *pInit, OsFile **pId){
  unixFile *pNew;
  pNew = sqliteMalloc( sizeof(unixFile) );
  if( pNew==0 ){
    close(pInit->h);


    *pId = 0;
    return SQLITE_NOMEM;
  }else{
    *pNew = *pInit;
    pNew->pMethod = &sqlite3UnixIoMethod;
    *pId = (OsFile*)pNew;
    OpenCounter(+1);







>
>







1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
** OsFile.  If we run out of memory, close the file and return NULL.
*/
static int allocateUnixFile(unixFile *pInit, OsFile **pId){
  unixFile *pNew;
  pNew = sqliteMalloc( sizeof(unixFile) );
  if( pNew==0 ){
    close(pInit->h);
    releaseLockInfo(pInit->pLock);
    releaseOpenCnt(pInit->pOpen);
    *pId = 0;
    return SQLITE_NOMEM;
  }else{
    *pNew = *pInit;
    pNew->pMethod = &sqlite3UnixIoMethod;
    *pId = (OsFile*)pNew;
    OpenCounter(+1);
Changes to src/prepare.c.
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains the implementation of the sqlite3_prepare()
** interface, and routines that contribute to loading the database schema
** from disk.
**
** $Id: prepare.c,v 1.5 2005/12/06 12:52:59 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** Fill the InitData structure with an error message that indicates







|







9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains the implementation of the sqlite3_prepare()
** interface, and routines that contribute to loading the database schema
** from disk.
**
** $Id: prepare.c,v 1.6 2005/12/09 14:25:08 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** Fill the InitData structure with an error message that indicates
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
  ** inside of the sqlite3Error() call above or something.
  */
  if( sqlite3Tsd()->mallocFailed ){
    rc = SQLITE_NOMEM;
    sqlite3Error(db, rc, 0);
  }

  sqlite3ClearMallocFailed();
  return rc;
}

#ifndef SQLITE_OMIT_UTF16
/*
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
*/







|







499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
  ** inside of the sqlite3Error() call above or something.
  */
  if( sqlite3Tsd()->mallocFailed ){
    rc = SQLITE_NOMEM;
    sqlite3Error(db, rc, 0);
  }

  sqlite3MallocClearFailed();
  return rc;
}

#ifndef SQLITE_OMIT_UTF16
/*
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
*/
Changes to src/shell.c.
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains code to implement the "sqlite" command line
** utility for accessing SQLite databases.
**
** $Id: shell.c,v 1.128 2005/09/11 02:03:04 drh Exp $
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include "sqlite3.h"
#include <ctype.h>







|







8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This file contains code to implement the "sqlite" command line
** utility for accessing SQLite databases.
**
** $Id: shell.c,v 1.129 2005/12/09 14:25:08 danielk1977 Exp $
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include "sqlite3.h"
#include <ctype.h>
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
static char mainPrompt[20];     /* First line prompt. default: "sqlite> "*/
static char continuePrompt[20]; /* Continuation prompt. default: "   ...> " */


/*
** Determines if a string is a number of not.
*/
static int isNumber(const unsigned char *z, int *realnum){
  if( *z=='-' || *z=='+' ) z++;
  if( !isdigit(*z) ){
    return 0;
  }
  z++;
  if( realnum ) *realnum = 0;
  while( isdigit(*z) ){ z++; }







|







77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
static char mainPrompt[20];     /* First line prompt. default: "sqlite> "*/
static char continuePrompt[20]; /* Continuation prompt. default: "   ...> " */


/*
** Determines if a string is a number of not.
*/
static int isNumber(const char *z, int *realnum){
  if( *z=='-' || *z=='+' ) z++;
  if( !isdigit(*z) ){
    return 0;
  }
  z++;
  if( realnum ) *realnum = 0;
  while( isdigit(*z) ){ z++; }
686
687
688
689
690
691
692

693
694
695
696
697
698
699
700
701
    zTmp = appendText(zTmp, zTable, '"');
    if( zTmp ){
      zSelect = appendText(zSelect, zTmp, '\'');
    }
    zSelect = appendText(zSelect, " || ' VALUES(' || ", 0);
    rc = sqlite3_step(pTableInfo);
    while( rc==SQLITE_ROW ){

      zSelect = appendText(zSelect, "quote(", 0);
      zSelect = appendText(zSelect, sqlite3_column_text(pTableInfo, 1), '"');
      rc = sqlite3_step(pTableInfo);
      if( rc==SQLITE_ROW ){
        zSelect = appendText(zSelect, ") || ', ' || ", 0);
      }else{
        zSelect = appendText(zSelect, ") ", 0);
      }
    }







>

|







686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
    zTmp = appendText(zTmp, zTable, '"');
    if( zTmp ){
      zSelect = appendText(zSelect, zTmp, '\'');
    }
    zSelect = appendText(zSelect, " || ' VALUES(' || ", 0);
    rc = sqlite3_step(pTableInfo);
    while( rc==SQLITE_ROW ){
      const char *zText = (const char *)sqlite3_column_text(pTableInfo, 1);
      zSelect = appendText(zSelect, "quote(", 0);
      zSelect = appendText(zSelect, zText, '"');
      rc = sqlite3_step(pTableInfo);
      if( rc==SQLITE_ROW ){
        zSelect = appendText(zSelect, ") || ', ' || ", 0);
      }else{
        zSelect = appendText(zSelect, ") ", 0);
      }
    }
Changes to src/sqliteInt.h.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
/*
** 2001 September 15
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.430 2005/12/06 17:19:11 danielk1977 Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_

/*
** Many people are failing to set -DNDEBUG=1 when compiling SQLite.
** Setting NDEBUG makes the code smaller and run faster.  So the following













|







1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
/*
** 2001 September 15
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.431 2005/12/09 14:25:08 danielk1977 Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_

/*
** Many people are failing to set -DNDEBUG=1 when compiling SQLite.
** Setting NDEBUG makes the code smaller and run faster.  So the following
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274





275
























276
277
278
279
280
281
282

/*
** This macro casts a pointer to an integer.  Useful for doing
** pointer arithmetic.
*/
#define Addr(X)  ((uptr)X)

/*
** If memory allocation problems are found, recompile with
**
**      -DSQLITE_DEBUG=1
**
** to enable some sanity checking on malloc() and free().  To
** check for memory leaks, recompile with
**
**      -DSQLITE_DEBUG=2
**
** and a line of text will be written to standard error for
** each malloc() and free().  This output can be analyzed
** by an AWK script to determine if there are any leaks.
*/
#ifdef SQLITE_MEMDEBUG
# define sqliteMalloc(X)    sqlite3Malloc_(X,1,__FILE__,__LINE__)
# define sqliteMallocRaw(X) sqlite3Malloc_(X,0,__FILE__,__LINE__)
# define sqliteFree(X)      sqlite3Free_(X,__FILE__,__LINE__)
# define sqliteRealloc(X,Y) sqlite3Realloc_(X,Y,__FILE__,__LINE__)
# define sqliteStrDup(X)    sqlite3StrDup_(X,__FILE__,__LINE__)
# define sqliteStrNDup(X,Y) sqlite3StrNDup_(X,Y,__FILE__,__LINE__)
#else
# define sqliteFree          sqlite3FreeX
# define sqliteMalloc        sqlite3Malloc
# define sqliteMallocRaw     sqlite3MallocRaw
# define sqliteRealloc       sqlite3Realloc
# define sqliteStrDup        sqlite3StrDup
# define sqliteStrNDup       sqlite3StrNDup
#endif

/*
** The following global variables are used for testing and debugging
** only.  They only work if SQLITE_DEBUG is defined.
*/
#ifdef SQLITE_MEMDEBUG
extern int sqlite3_nMalloc;      /* Number of sqliteMalloc() calls */
extern int sqlite3_nFree;        /* Number of sqliteFree() calls */
extern int sqlite3_iMallocFail;  /* Fail sqliteMalloc() after this many calls */
extern int sqlite3_iMallocReset; /* Set iMallocFail to this when it reaches 0 */





#endif

























/*
** Name of the master database table.  The master database table
** is a special table that holds the names and attributes of all
** user tables and indices.
*/
#define MASTER_NAME       "sqlite_master"







<
<
<
<
<
<
<
<
<
<
<
<
<
<

<
<
<
<
<
<
<
<
<
<
<
<
<
<
<




<




>
>
>
>
>

>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







229
230
231
232
233
234
235














236















237
238
239
240

241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281

/*
** This macro casts a pointer to an integer.  Useful for doing
** pointer arithmetic.
*/
#define Addr(X)  ((uptr)X)















#ifdef SQLITE_MEMDEBUG















/*
** The following global variables are used for testing and debugging
** only.  They only work if SQLITE_DEBUG is defined.
*/

extern int sqlite3_nMalloc;      /* Number of sqliteMalloc() calls */
extern int sqlite3_nFree;        /* Number of sqliteFree() calls */
extern int sqlite3_iMallocFail;  /* Fail sqliteMalloc() after this many calls */
extern int sqlite3_iMallocReset; /* Set iMallocFail to this when it reaches 0 */
#define ENTER_MALLOC (\
  sqlite3Tsd()->zFile = __FILE__, sqlite3Tsd()->iLine = __LINE__ \
)
#else
#define ENTER_MALLOC 0
#endif

#define sqliteFree(x)          sqlite3FreeX(x)
#define sqliteMalloc(x)        (ENTER_MALLOC, sqlite3Malloc(x))
#define sqliteMallocRaw(x)     (ENTER_MALLOC, sqlite3MallocRaw(x))
#define sqliteRealloc(x,y)     (ENTER_MALLOC, sqlite3Realloc(x,y))
#define sqliteStrDup(x)        (ENTER_MALLOC, sqlite3StrDup(x))
#define sqliteStrNDup(x,y)     (ENTER_MALLOC, sqlite3StrNDup(x,y))

/*
** An instance of this structure is allocated for each thread that uses SQLite.
*/
typedef struct SqliteTsd SqliteTsd;
struct SqliteTsd {
  int mallocFailed;               /* True after a malloc() has failed */
#ifndef NDEBUG
  int mallocAllowed;              /* assert() in sqlite3Malloc() if not set */
#endif
#ifdef SQLITE_MEMDEBUG
  int isFail;              /* True if all malloc() calls should fail */
  const char *zFile;       /* Filename to associate debugging info with */
  int iLine;               /* Line number to associate debugging info with */
  void *pFirst;            /* Pointer to linked list of allocations */
#endif
};

/*
** Name of the master database table.  The master database table
** is a special table that holds the names and attributes of all
** user tables and indices.
*/
#define MASTER_NAME       "sqlite_master"
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
*/
typedef struct {
  sqlite3 *db;        /* The database being initialized */
  char **pzErrMsg;    /* Error message stored here */
} InitData;

/*
** An instance of this structure is allocated for each thread that uses SQLite.
*/
typedef struct SqliteTsd SqliteTsd;
struct SqliteTsd {
  int mallocFailed;               /* True after a malloc() has failed */
};

/*
 * This global flag is set for performance testing of triggers. When it is set
 * SQLite will perform the overhead of building new and old trigger references 
 * even when no triggers exist
 */
extern int sqlite3_always_code_trigger_setup;








<
<
<
<
<
<
<
<







1374
1375
1376
1377
1378
1379
1380








1381
1382
1383
1384
1385
1386
1387
** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
*/
typedef struct {
  sqlite3 *db;        /* The database being initialized */
  char **pzErrMsg;    /* Error message stored here */
} InitData;









/*
 * This global flag is set for performance testing of triggers. When it is set
 * SQLite will perform the overhead of building new and old trigger references 
 * even when no triggers exist
 */
extern int sqlite3_always_code_trigger_setup;

1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439

1440
1441
1442
1443
1444
1445
1446
int sqlite3StrICmp(const char *, const char *);
int sqlite3StrNICmp(const char *, const char *, int);
int sqlite3HashNoCase(const char *, int);
int sqlite3IsNumber(const char*, int*, u8);
int sqlite3Compare(const char *, const char *);
int sqlite3SortCompare(const char *, const char *);
void sqlite3RealToSortable(double r, char *);
#ifdef SQLITE_MEMDEBUG
  void *sqlite3Malloc_(int,int,char*,int);
  void sqlite3Free_(void*,char*,int);
  void *sqlite3Realloc_(void*,int,char*,int);
  char *sqlite3StrDup_(const char*,char*,int);
  char *sqlite3StrNDup_(const char*, int,char*,int);
  void sqlite3CheckMemory(void*,int);
#else
  void *sqlite3Malloc(int);
  void *sqlite3MallocRaw(int);
  void sqlite3Free(void*);
  void *sqlite3Realloc(void*,int);
  char *sqlite3StrDup(const char*);
  char *sqlite3StrNDup(const char*, int);
# define sqlite3CheckMemory(a,b)
# define sqlite3MallocX sqlite3Malloc
#endif
void sqlite3ReallocOrFree(void**,int);
void sqlite3FreeX(void*);
void *sqlite3MallocX(int);

char *sqlite3MPrintf(const char*, ...);
char *sqlite3VMPrintf(const char*, va_list);
void sqlite3DebugPrintf(const char*, ...);
void *sqlite3TextToPtr(const char*);
void sqlite3SetString(char **, ...);
void sqlite3ErrorMsg(Parse*, const char*, ...);
void sqlite3Dequote(char*);







|
<
<
<
<
<
<
<
|
|
|
|
|
|

<
<



>







1404
1405
1406
1407
1408
1409
1410
1411







1412
1413
1414
1415
1416
1417
1418


1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
int sqlite3StrICmp(const char *, const char *);
int sqlite3StrNICmp(const char *, const char *, int);
int sqlite3HashNoCase(const char *, int);
int sqlite3IsNumber(const char*, int*, u8);
int sqlite3Compare(const char *, const char *);
int sqlite3SortCompare(const char *, const char *);
void sqlite3RealToSortable(double r, char *);








void *sqlite3Malloc(int);
void *sqlite3MallocRaw(int);
void sqlite3Free(void*);
void *sqlite3Realloc(void*,int);
char *sqlite3StrDup(const char*);
char *sqlite3StrNDup(const char*, int);
# define sqlite3CheckMemory(a,b)


void sqlite3ReallocOrFree(void**,int);
void sqlite3FreeX(void*);
void *sqlite3MallocX(int);

char *sqlite3MPrintf(const char*, ...);
char *sqlite3VMPrintf(const char*, va_list);
void sqlite3DebugPrintf(const char*, ...);
void *sqlite3TextToPtr(const char*);
void sqlite3SetString(char **, ...);
void sqlite3ErrorMsg(Parse*, const char*, ...);
void sqlite3Dequote(char*);
1673
1674
1675
1676
1677
1678
1679
1680
1681









1682
1683
1684
1685
1686
1687
int sqlite3InvokeBusyHandler(BusyHandler*);
int sqlite3FindDb(sqlite3*, Token*);
void sqlite3AnalysisLoad(sqlite3*,int iDB);
void sqlite3DefaultRowEst(Index*);
void sqlite3RegisterLikeFunctions(sqlite3*, int);
int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
SqliteTsd *sqlite3Tsd();
void sqlite3ClearMallocFailed();
void sqlite3AttachFunctions(sqlite3 *);










#ifdef SQLITE_SSE
#include "sseInt.h"
#endif

#endif







<

>
>
>
>
>
>
>
>
>






1656
1657
1658
1659
1660
1661
1662

1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
int sqlite3InvokeBusyHandler(BusyHandler*);
int sqlite3FindDb(sqlite3*, Token*);
void sqlite3AnalysisLoad(sqlite3*,int iDB);
void sqlite3DefaultRowEst(Index*);
void sqlite3RegisterLikeFunctions(sqlite3*, int);
int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
SqliteTsd *sqlite3Tsd();

void sqlite3AttachFunctions(sqlite3 *);

void sqlite3MallocClearFailed();
#ifdef NDEBUG
  #define sqlite3MallocDisallow()
  #define sqlite3MallocAllow()
#else
  void sqlite3MallocDisallow();
  void sqlite3MallocAllow();
#endif

#ifdef SQLITE_SSE
#include "sseInt.h"
#endif

#endif
Changes to src/test1.c.
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing the printf() interface to SQLite.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test1.c,v 1.171 2005/12/06 12:53:00 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>








|







9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing the printf() interface to SQLite.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test1.c,v 1.172 2005/12/09 14:25:08 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

828
829
830
831
832
833
834









835
836
837
838
839
840
841
  char **argv            /* Text of each argument */
){
  char zBuf[200];
  sprintf(zBuf, "%d %d %d", sqlite3_nMalloc, sqlite3_nFree, sqlite3_iMallocFail);
  Tcl_AppendResult(interp, zBuf, 0);
  return TCL_OK;
}









#endif

/*
** Usage:  sqlite_abort
**
** Shutdown the process immediately.  This is not a clean shutdown.
** This command is used to test the recoverability of a database in







>
>
>
>
>
>
>
>
>







828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
  char **argv            /* Text of each argument */
){
  char zBuf[200];
  sprintf(zBuf, "%d %d %d", sqlite3_nMalloc, sqlite3_nFree, sqlite3_iMallocFail);
  Tcl_AppendResult(interp, zBuf, 0);
  return TCL_OK;
}
static int sqlite_malloc_outstanding(
  void *NotUsed,
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int argc,              /* Number of arguments */
  char **argv            /* Text of each argument */
){
  extern int sqlite3OutstandingMallocs(Tcl_Interp *interp);
  return sqlite3OutstandingMallocs(interp);
}
#endif

/*
** Usage:  sqlite_abort
**
** Shutdown the process immediately.  This is not a clean shutdown.
** This command is used to test the recoverability of a database in
3078
3079
3080
3081
3082
3083
3084

3085
3086
3087
3088
3089
3090
3091
     { "sqlite3_create_function",       (Tcl_CmdProc*)test_create_function  },
     { "sqlite3_create_aggregate",      (Tcl_CmdProc*)test_create_aggregate },
     { "sqlite_register_test_function", (Tcl_CmdProc*)test_register_func    },
     { "sqlite_abort",                  (Tcl_CmdProc*)sqlite_abort          },
#ifdef SQLITE_MEMDEBUG
     { "sqlite_malloc_fail",            (Tcl_CmdProc*)sqlite_malloc_fail    },
     { "sqlite_malloc_stat",            (Tcl_CmdProc*)sqlite_malloc_stat    },

#endif
     { "sqlite_bind",                   (Tcl_CmdProc*)test_bind             },
     { "breakpoint",                    (Tcl_CmdProc*)test_breakpoint       },
     { "sqlite3_key",                   (Tcl_CmdProc*)test_key              },
     { "sqlite3_rekey",                 (Tcl_CmdProc*)test_rekey            },
     { "sqlite_set_magic",              (Tcl_CmdProc*)sqlite_set_magic      },
     { "sqlite3_interrupt",             (Tcl_CmdProc*)test_interrupt        },







>







3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
     { "sqlite3_create_function",       (Tcl_CmdProc*)test_create_function  },
     { "sqlite3_create_aggregate",      (Tcl_CmdProc*)test_create_aggregate },
     { "sqlite_register_test_function", (Tcl_CmdProc*)test_register_func    },
     { "sqlite_abort",                  (Tcl_CmdProc*)sqlite_abort          },
#ifdef SQLITE_MEMDEBUG
     { "sqlite_malloc_fail",            (Tcl_CmdProc*)sqlite_malloc_fail    },
     { "sqlite_malloc_stat",            (Tcl_CmdProc*)sqlite_malloc_stat    },
     { "sqlite_malloc_outstanding",   (Tcl_CmdProc*)sqlite_malloc_outstanding},
#endif
     { "sqlite_bind",                   (Tcl_CmdProc*)test_bind             },
     { "breakpoint",                    (Tcl_CmdProc*)test_breakpoint       },
     { "sqlite3_key",                   (Tcl_CmdProc*)test_key              },
     { "sqlite3_rekey",                 (Tcl_CmdProc*)test_rekey            },
     { "sqlite_set_magic",              (Tcl_CmdProc*)sqlite_set_magic      },
     { "sqlite3_interrupt",             (Tcl_CmdProc*)test_interrupt        },
3172
3173
3174
3175
3176
3177
3178

3179
3180
3181
3182
3183
3184
3185
  static int bitmask_size = sizeof(Bitmask)*8;
  int i;
  extern int sqlite3_os_trace;
  extern int sqlite3_where_trace;
  extern int sqlite3_sync_count, sqlite3_fullsync_count;
  extern int sqlite3_opentemp_count;
  extern int sqlite3_memUsed;

  extern int sqlite3_memMax;
  extern int sqlite3_like_count;
#if OS_WIN
  extern int sqlite3_os_type;
#endif
#ifdef SQLITE_DEBUG
  extern int sqlite3_vdbe_addop_trace;







>







3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
  static int bitmask_size = sizeof(Bitmask)*8;
  int i;
  extern int sqlite3_os_trace;
  extern int sqlite3_where_trace;
  extern int sqlite3_sync_count, sqlite3_fullsync_count;
  extern int sqlite3_opentemp_count;
  extern int sqlite3_memUsed;
  extern int sqlite3_malloc_id;
  extern int sqlite3_memMax;
  extern int sqlite3_like_count;
#if OS_WIN
  extern int sqlite3_os_type;
#endif
#ifdef SQLITE_DEBUG
  extern int sqlite3_vdbe_addop_trace;
3206
3207
3208
3209
3210
3211
3212


3213
3214
3215
3216
3217
3218
3219
      (char*)&sqlite3_interrupt_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_open_file_count", 
      (char*)&sqlite3_open_file_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_current_time", 
      (char*)&sqlite3_current_time, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_os_trace",
      (char*)&sqlite3_os_trace, TCL_LINK_INT);


#if OS_WIN
  Tcl_LinkVar(interp, "sqlite_os_type",
      (char*)&sqlite3_os_type, TCL_LINK_INT);
#endif
#ifdef SQLITE_TEST
  Tcl_LinkVar(interp, "sqlite_query_plan",
      (char*)&query_plan, TCL_LINK_STRING|TCL_LINK_READ_ONLY);







>
>







3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
      (char*)&sqlite3_interrupt_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_open_file_count", 
      (char*)&sqlite3_open_file_count, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_current_time", 
      (char*)&sqlite3_current_time, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_os_trace",
      (char*)&sqlite3_os_trace, TCL_LINK_INT);
  Tcl_LinkVar(interp, "sqlite_malloc_id",
      (char*)&sqlite3_malloc_id, TCL_LINK_STRING);
#if OS_WIN
  Tcl_LinkVar(interp, "sqlite_os_type",
      (char*)&sqlite3_os_type, TCL_LINK_INT);
#endif
#ifdef SQLITE_TEST
  Tcl_LinkVar(interp, "sqlite_query_plan",
      (char*)&query_plan, TCL_LINK_STRING|TCL_LINK_READ_ONLY);
Changes to src/trigger.c.
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
){
  Trigger *pTrig = 0;     /* The trigger whose construction is finishing up */
  sqlite3 *db = pParse->db;  /* The database */
  DbFixer sFix;

  pTrig = pParse->pNewTrigger;
  pParse->pNewTrigger = 0;
  if( pParse->nErr || pTrig==0 ) goto triggerfinish_cleanup;
  pTrig->step_list = pStepList;
  while( pStepList ){
    pStepList->pTrig = pTrig;
    pStepList = pStepList->pNext;
  }
  if( sqlite3FixInit(&sFix, pParse, pTrig->iDb, "trigger", &pTrig->nameToken) 
          && sqlite3FixTriggerStep(&sFix, pTrig->step_list) ){







|







195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
){
  Trigger *pTrig = 0;     /* The trigger whose construction is finishing up */
  sqlite3 *db = pParse->db;  /* The database */
  DbFixer sFix;

  pTrig = pParse->pNewTrigger;
  pParse->pNewTrigger = 0;
  if( pParse->nErr || !pTrig ) goto triggerfinish_cleanup;
  pTrig->step_list = pStepList;
  while( pStepList ){
    pStepList->pTrig = pTrig;
    pStepList = pStepList->pNext;
  }
  if( sqlite3FixInit(&sFix, pParse, pTrig->iDb, "trigger", &pTrig->nameToken) 
          && sqlite3FixTriggerStep(&sFix, pTrig->step_list) ){
308
309
310
311
312
313
314
315



316
317
318
319
320
321
322
** a trigger step.  Return a pointer to a TriggerStep structure.
**
** The parser calls this routine when it finds a SELECT statement in
** body of a TRIGGER.  
*/
TriggerStep *sqlite3TriggerSelectStep(Select *pSelect){
  TriggerStep *pTriggerStep = sqliteMalloc(sizeof(TriggerStep));
  if( pTriggerStep==0 ) return 0;




  pTriggerStep->op = TK_SELECT;
  pTriggerStep->pSelect = pSelect;
  pTriggerStep->orconf = OE_Default;
  sqlitePersistTriggerStep(pTriggerStep);

  return pTriggerStep;







|
>
>
>







308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
** a trigger step.  Return a pointer to a TriggerStep structure.
**
** The parser calls this routine when it finds a SELECT statement in
** body of a TRIGGER.  
*/
TriggerStep *sqlite3TriggerSelectStep(Select *pSelect){
  TriggerStep *pTriggerStep = sqliteMalloc(sizeof(TriggerStep));
  if( pTriggerStep==0 ) {
    sqlite3SelectDelete(pSelect);
    return 0;
  }

  pTriggerStep->op = TK_SELECT;
  pTriggerStep->pSelect = pSelect;
  pTriggerStep->orconf = OE_Default;
  sqlitePersistTriggerStep(pTriggerStep);

  return pTriggerStep;
Changes to src/util.c.
10
11
12
13
14
15
16
17
18
19
20
21
22
23

24
25
26

27
28
29

30
31
32
33
34
35
36
37




38
























39
40
41
42
43






44
45



46

47



















48
49
50

51


52





53















54




























































55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82




83
84
85
86
87
88
89
90
91

92
93
94
95
96
97
98
99
100

101
102
103

104


105




106
107
108
109
110
111
112
113
114
115

116


117
118
119

120








121

122

123
124
125
126
127
128
129
130
131
132
133

134
135
136
137
138
139
140
141
142
143
144

145






146
147



148



149
150


151
152
153
154
155
156
157
158










159



160
161

162

163
164
165
166




167

168

169

170
171

172

173
174
175

176

177

178
179


180
181
182
183

184
185


186
187
188

189

190
191



192
193
194
195


196

197
198
199
200
201

202
203
204
205
206
207








208

209


210



211


212




















213
214
215

216
217

218



219
220
221
222
223
224
225
226
227

228
229
230






231
232
233
234
235
236
237



238





239


240
241
242
243
244
245

246
247
248
249
250
251
252
253
254
255
256
257
258
259
260

261
262
263
264
265




















266
267
268
269


270
271
272
273
274
275
276
277
278
279
280
281
282
283
284

285




286
287
288
289

290
291

292
293

294
295
296
297


298
299
300

301
302


303

304
305
306




307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
**
*************************************************************************
** Utility functions used throughout sqlite.
**
** This file contains functions for allocating memory, comparing
** strings, and stuff like that.
**
** $Id: util.c,v 1.149 2005/12/06 12:53:01 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <stdarg.h>
#include <ctype.h>

#if SQLITE_MEMDEBUG>2 && defined(__GLIBC__)

#include <execinfo.h>
void print_stack_trace(){
  void *bt[30];

  int i;
  int n = backtrace(bt, 30);


  fprintf(stderr, "STACK: ");
  for(i=0; i<n;i++){
    fprintf(stderr, "%p ", bt[i]);
  }
  fprintf(stderr, "\n");
}
#else
#define print_stack_trace()




#endif

























#if 0
/*
** If malloc() ever fails, this global variable gets set to 1.
** This causes the library to abort and never again function.






*/
int sqlite3Tsd()->mallocFailed = 0;



#endif





















/*
** If SQLITE_MEMDEBUG is defined, then use versions of malloc() and
** free() that track memory usage and check for buffer overruns.

*/


#ifdef SQLITE_MEMDEBUG





















/*




























































** For keeping track of the number of mallocs and frees.   This
** is used to check for memory leaks.  The iMallocFail and iMallocReset
** values are used to simulate malloc() failures during testing in 
** order to verify that the library correctly handles an out-of-memory
** condition.
*/
int sqlite3_nMalloc;         /* Number of sqliteMalloc() calls */
int sqlite3_nFree;           /* Number of sqliteFree() calls */
int sqlite3_memUsed;         /* Total memory obtained from malloc */
int sqlite3_memMax;          /* Mem usage high-water mark */
int sqlite3_iMallocFail;     /* Fail sqliteMalloc() after this many calls */
int sqlite3_iMallocReset = -1; /* When iMallocFail reaches 0, set to this */
#if SQLITE_MEMDEBUG>1
static int memcnt = 0;
#endif

/*
** Number of 32-bit guard words.  This should probably be a multiple of
** 2 since on 64-bit machines we want the value returned by sqliteMalloc()
** to be 8-byte aligned.
*/
#define N_GUARD 2

/*
** Check for a simulated memory allocation failure.  Return true if
** the failure should be simulated.  Return false to proceed as normal.
*/
static int simulatedMallocFailure(int n, char *zFile, int line){




  if( sqlite3_iMallocFail>=0 ){
    sqlite3_iMallocFail--;
    if( sqlite3_iMallocFail==0 ){
      sqlite3Tsd()->mallocFailed++;
#if SQLITE_MEMDEBUG>1
      fprintf(stderr,"**** failed to allocate %d bytes at %s:%d\n",
              n, zFile,line);
#endif
      sqlite3_iMallocFail = sqlite3_iMallocReset;

      return 1;
    }
  }
  return 0;
}

/*
** Allocate new memory and set it to zero.  Return NULL if
** no memory is available.

*/
void *sqlite3Malloc_(int n, int bZero, char *zFile, int line){
  void *p;

  int *pi;


  int i, k;





  /* Any malloc() calls between a malloc() failure and clearing the
  ** mallocFailed flag (done before returning control to the user)
  ** automatically fail. Although this restriction may have to be relaxed in
  ** the future, for now it makes the system easier to test.
  **
  ** TODO: This will eventually be done as part of the same wrapper that may
  ** call sqlite3_release_memory(). Above the sqlite3OsMalloc() level.
  */
  if( sqlite3Tsd()->mallocFailed ){

    return 0;


  }

  if( n==0 ){

    return 0;








  }

  if( simulatedMallocFailure(n, zFile, line) ){

    return 0;
  }
  sqlite3_memUsed += n;
  if( sqlite3_memMax<sqlite3_memUsed ) sqlite3_memMax = sqlite3_memUsed;
  k = (n+sizeof(int)-1)/sizeof(int);
  pi = malloc( (N_GUARD*2+1+k)*sizeof(int));
  if( pi==0 ){
    if( n>0 ) sqlite3Tsd()->mallocFailed++;
    return 0;
  }
  sqlite3_nMalloc++;

  for(i=0; i<N_GUARD; i++) pi[i] = 0xdead1122;
  pi[N_GUARD] = n;
  for(i=0; i<N_GUARD; i++) pi[k+1+N_GUARD+i] = 0xdead3344;
  p = &pi[N_GUARD+1];
  memset(p, bZero==0, n);
#if SQLITE_MEMDEBUG>1
  print_stack_trace();
  fprintf(stderr,"%06d malloc %d bytes at 0x%x from %s:%d\n",
      ++memcnt, n, (int)p, zFile,line);
#endif
  return p;

}







/*



** This version of malloc is always a real function, never a macro



*/
void *sqlite3MallocX(int n){


  return sqlite3Malloc_(n, 0, __FILE__, __LINE__);
}

/*
** Check to see if the given pointer was obtained from sqliteMalloc()
** and is able to hold at least N bytes.  Raise an exception if this
** is not the case.
**










** This routine is used for testing purposes only.



*/
void sqlite3CheckMemory(void *p, int N){

  int *pi = p;

  int n, i, k;
  pi -= N_GUARD+1;
  for(i=0; i<N_GUARD; i++){
    assert( pi[i]==0xdead1122 );




  }

  n = pi[N_GUARD];

  assert( N>=0 && N<n );

  k = (n+sizeof(int)-1)/sizeof(int);
  for(i=0; i<N_GUARD; i++){

    assert( pi[k+N_GUARD+1+i]==0xdead3344 );

  }
}


/*

** Free memory previously obtained from sqliteMalloc()

*/
void sqlite3Free_(void *p, char *zFile, int line){


  if( p ){
    int *pi, i, k, n;
    pi = p;
    pi -= N_GUARD+1;

    sqlite3_nFree++;
    for(i=0; i<N_GUARD; i++){


      if( pi[i]!=0xdead1122 ){
        fprintf(stderr,"Low-end memory corruption at 0x%x\n", (int)p);
        return;

      }

    }
    n = pi[N_GUARD];



    sqlite3_memUsed -= n;
    k = (n+sizeof(int)-1)/sizeof(int);
    for(i=0; i<N_GUARD; i++){
      if( pi[k+N_GUARD+1+i]!=0xdead3344 ){


        fprintf(stderr,"High-end memory corruption at 0x%x\n", (int)p);

        return;
      }
    }
    memset(pi, 0xff, (k+N_GUARD*2+1)*sizeof(int));
#if SQLITE_MEMDEBUG>1

    fprintf(stderr,"%06d free %d bytes at 0x%x from %s:%d\n",
         ++memcnt, n, (int)p, zFile,line);
#endif
    free(pi);
  }
}










/*


** Resize a prior allocation.  If p==0, then this routine



** works just like sqliteMalloc().  If n==0, then this routine


** works just like sqliteFree().




















*/
void *sqlite3Realloc_(void *oldP, int n, char *zFile, int line){
  int *oldPi, *pi, i, k, oldN, oldK;

  void *p;
  if( oldP==0 ){

    return sqlite3Malloc_(n,1,zFile,line);



  }
  if( n==0 ){
    sqlite3Free_(oldP,zFile,line);
    return 0;
  }
  if( simulatedMallocFailure(n, zFile, line) ){
    return 0;
  }
  oldPi = oldP;

  oldPi -= N_GUARD+1;
  if( oldPi[0]!=0xdead1122 ){
    fprintf(stderr,"Low-end memory corruption in realloc at 0x%x\n", (int)oldP);






    return 0;
  }
  oldN = oldPi[N_GUARD];
  sqlite3_memUsed -= oldN;
  oldK = (oldN+sizeof(int)-1)/sizeof(int);
  for(i=0; i<N_GUARD; i++){
    if( oldPi[oldK+N_GUARD+1+i]!=0xdead3344 ){



      fprintf(stderr,"High-end memory corruption in realloc at 0x%x\n",





              (int)oldP);


      return 0;
    }
  }
  k = (n + sizeof(int) - 1)/sizeof(int);
  pi = malloc( (k+N_GUARD*2+1)*sizeof(int) );
  if( pi==0 ){

    if( n>0 ) sqlite3Tsd()->mallocFailed++;
    return 0;
  }
  for(i=0; i<N_GUARD; i++) pi[i] = 0xdead1122;
  pi[N_GUARD] = n;
  sqlite3_memUsed += n;
  if( sqlite3_memMax<sqlite3_memUsed ) sqlite3_memMax = sqlite3_memUsed;
  for(i=0; i<N_GUARD; i++) pi[k+N_GUARD+1+i] = 0xdead3344;
  p = &pi[N_GUARD+1];
  memcpy(p, oldP, n>oldN ? oldN : n);
  if( n>oldN ){
    memset(&((char*)p)[oldN], 0x55, n-oldN);
  }
  memset(oldPi, 0xab, (oldK+N_GUARD+2)*sizeof(int));
  free(oldPi);

#if SQLITE_MEMDEBUG>1
  print_stack_trace();
  fprintf(stderr,"%06d realloc %d to %d bytes at 0x%x to 0x%x at %s:%d\n",
    ++memcnt, oldN, n, (int)oldP, (int)p, zFile, line);
#endif




















  return p;
}

/*


** Make a copy of a string in memory obtained from sqliteMalloc()
*/
char *sqlite3StrDup_(const char *z, char *zFile, int line){
  char *zNew;
  if( z==0 ) return 0;
  zNew = sqlite3Malloc_(strlen(z)+1, 0, zFile, line);
  if( zNew ) strcpy(zNew, z);
  return zNew;
}
char *sqlite3StrNDup_(const char *z, int n, char *zFile, int line){
  char *zNew;
  if( z==0 ) return 0;
  zNew = sqlite3Malloc_(n+1, 0, zFile, line);
  if( zNew ){
    memcpy(zNew, z, n);

    zNew[n] = 0;




  }
  return zNew;
}


/*
** A version of sqliteFree that is always a function, not a macro.

*/
void sqlite3FreeX(void *p){

  sqliteFree(p);
}
#endif /* SQLITE_MEMDEBUG */



/*
** The following versions of malloc() and free() are for use in a
** normal build.

*/
#if !defined(SQLITE_MEMDEBUG)




/*
** Allocate new memory and set it to zero.  Return NULL if
** no memory is available.  See also sqliteMallocRaw().




*/
void *sqlite3Malloc(int n){
  void *p;
  if( n==0 ) return 0;
  if( (p = malloc(n))==0 ){
    if( n>0 ) sqlite3Tsd()->mallocFailed++;
  }else{
    memset(p, 0, n);
  }
  return p;
}

/*
** Allocate new memory but do not set it to zero.  Return NULL if
** no memory is available.  See also sqliteMalloc().
*/
void *sqlite3MallocRaw(int n){
  void *p;
  if( n==0 ) return 0;
  if( (p = malloc(n))==0 ){
    if( n>0 ) sqlite3Tsd()->mallocFailed++;
  }
  return p;
}

/*
** Free memory previously obtained from sqliteMalloc()
*/
void sqlite3FreeX(void *p){
  if( p ){
    free(p);
  }
}

/*
** Resize a prior allocation.  If p==0, then this routine
** works just like sqliteMalloc().  If n==0, then this routine
** works just like sqliteFree().
*/
void *sqlite3Realloc(void *p, int n){
  void *p2;
  if( p==0 ){
    return sqliteMalloc(n);
  }
  if( n==0 ){
    sqliteFree(p);
    return 0;
  }
  p2 = realloc(p, n);
  if( p2==0 ){
    if( n>0 ) sqlite3Tsd()->mallocFailed++;
  }
  return p2;
}

/*
** Make a copy of a string in memory obtained from sqliteMalloc()
*/
char *sqlite3StrDup(const char *z){
  char *zNew;
  if( z==0 ) return 0;
  zNew = sqliteMallocRaw(strlen(z)+1);
  if( zNew ) strcpy(zNew, z);
  return zNew;
}
char *sqlite3StrNDup(const char *z, int n){
  char *zNew;
  if( z==0 ) return 0;
  zNew = sqliteMallocRaw(n+1);
  if( zNew ){
    memcpy(zNew, z, n);
    zNew[n] = 0;
  }
  return zNew;
}
#endif /* !defined(SQLITE_MEMDEBUG) */

/*
** Reallocate a buffer to a different size.  This is similar to
** sqliteRealloc() except that if the allocation fails the buffer
** is freed.
*/
void sqlite3ReallocOrFree(void **ppBuf, int newSize){
  void *pNew = sqliteRealloc(*ppBuf, newSize);
  if( pNew==0 ){
    sqliteFree(*ppBuf);
  }
  *ppBuf = pNew;
}

/*
** Create a string from the 2nd and subsequent arguments (up to the
** first NULL argument), store the string in memory obtained from
** sqliteMalloc() and make the pointer indicated by the 1st argument
** point to that string.  The 1st argument must either be NULL or 
** point to memory obtained from sqliteMalloc().







|





<
>
|
<
|
>
|
<
|
>
|
|
|
<
<
<
<
|
>
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

<

|
|
>
>
>
>
>
>

|
>
>
>
|
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

<
<
>

>
>

>
>
>
>
>

>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>








|
|


<
<
<
<
<
<
<
<
<
<





|
>
>
>
>



<
<
<
<
<

>







|
|
>

<
|
>
|
>
>
|
>
>
>
>
|
|
<
<
<
<
|
<
<
|
>
|
>
>

|
|
>
|
>
>
>
>
>
>
>
>
|
>
|
>
|

|
|
|
|
|
|
<

|
>
|
|
|
|
|
|
<
<
|
<
<
>
|
>
>
>
>
>
>
|
|
>
>
>
|
>
>
>
|
|
>
>
|



|
<
|
|
>
>
>
>
>
>
>
>
>
>
|
>
>
>

|
>
|
>
|
<
<
|
>
>
>
>
|
>
|
>
|
>
|
<
>
|
>
|
|
|
>

>
|
>

|
>
>
|
<
|
<
>
|
<
>
>
|
<
<
>
|
>
|
<
>
>
>
|
<
<
<
>
>
|
>
|
<
<
<
|
>
|
|
|
|
|
<
>
>
>
>
>
>
>
>

>
|
>
>
|
>
>
>
|
>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

|
<
>
|
|
>
|
>
>
>

<
<
|
|
<
<
|
<
>
|
|
<
>
>
>
>
>
>
|
|
<
<
<
<
|
>
>
>
|
>
>
>
>
>
|
>
>
|
|
|
<
<
<
>
|
<
|
<
<
<
<
<
<
<
<
<
|
<
|
>
|
|
|
<

>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>




>
>
|

|
<
<
|
|
|
|
|
<
<
<
|
|
>
|
>
>
>
>
|
|
|
|
>

|
>


>
|
<
<
|
>
>

|
<
>

<
>
>
|
>

<
|
>
>
>
>
|

|
|
<
<
<




|
<
<
<
<
<
|
|
<
|

|



|
<
|
<
<
<
<
|
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
|
<
|




|






|






<
<
<
<
<
<
<
<
<
<
<
<
<
<







10
11
12
13
14
15
16
17
18
19
20
21
22

23
24

25
26
27

28
29
30
31
32




33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63

64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100


101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199










200
201
202
203
204
205
206
207
208
209
210
211
212





213
214
215
216
217
218
219
220
221
222
223
224
225

226
227
228
229
230
231
232
233
234
235
236
237




238


239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268

269
270
271
272
273
274
275
276
277


278


279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304

305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326


327
328
329
330
331
332
333
334
335
336
337
338

339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354

355

356
357

358
359
360


361
362
363
364

365
366
367
368



369
370
371
372
373



374
375
376
377
378
379
380

381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423

424
425
426
427
428
429
430
431
432


433
434


435

436
437
438

439
440
441
442
443
444
445
446




447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462



463
464

465









466

467
468
469
470
471

472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501


502
503
504
505
506



507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526


527
528
529
530
531

532
533

534
535
536
537
538

539
540
541
542
543
544
545
546
547



548
549
550
551
552





553
554

555
556
557
558
559
560
561

562




563




















564

565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583














584
585
586
587
588
589
590
**
*************************************************************************
** Utility functions used throughout sqlite.
**
** This file contains functions for allocating memory, comparing
** strings, and stuff like that.
**
** $Id: util.c,v 1.150 2005/12/09 14:25:09 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <stdarg.h>
#include <ctype.h>


/*
** MALLOC WRAPPER ARCHITECTURE

**
** The sqlite code accesses dynamic memory allocation/deallocation by invoking
** the following four APIs (which may be implemented as macros).

**
**     sqlite3Malloc()
**     sqlite3MallocRaw()
**     sqlite3Realloc()
**     sqlite3ReallocOrFree()




**     sqlite3Free()
**
** The function sqlite3FreeX performs the same task as sqlite3Free and is
** guaranteed to be a real function.
**
** The above APIs are implemented in terms of the functions provided at the Os
** level (not in this file). The Os level interface is never accessed directly
** by code outside of this file.
**
**     sqlite3OsMalloc()
**     sqlite3OsRealloc()
**     sqlite3OsFree()
**     sqlite3OsAllocationSize()
**
** Functions sqlite3MallocRaw() and sqlite3Realloc() may invoke 
** sqlite3_release_memory() if a call to sqlite3OsMalloc() or
** sqlite3OsRealloc() fails. Function sqlite3Malloc() usually invokes
** sqlite3MallocRaw().
**
** MALLOC TEST WRAPPER ARCHITECTURE
**
** The test wrapper provides extra test facilities to ensure the library 
** does not leak memory and handles the failure of the underlying (Os level)
** allocation system correctly. It is only present if the library is 
** compiled with the SQLITE_MEMDEBUG macro set.
**
**     * Guardposts to detect overwrites.
**     * Ability to cause a specific Malloc() or Realloc() to fail.
**     * Audit outstanding memory allocations (i.e check for leaks).
*/


/*
** sqlite3OsMalloc
** sqlite3OsRealloc
** sqlite3OsOsFree
** sqlite3OsAllocationSize
**
** Implementation of the os level dynamic memory allocation interface in terms
** of the standard malloc(), realloc() and free() found in many operating
** systems. No rocket science here.
*/
void *sqlite3OsMalloc(int n){
  char *p = (char *)malloc(n+8);
  assert(n>0);
  assert(sizeof(int)<=8);
  if( p ){
    *(int *)p = n;
  }
  return (void *)(p + 8);
}
void *sqlite3OsRealloc(void *p, int n){
  char *p2 = ((char *)p - 8);
  assert(n>0);
  p2 = realloc(p2, n+8);
  if( p2 ){
    *(int *)p2 = n;
  }
  return (void *)((char *)p2 + 8);
}
void sqlite3OsFree(void *p){
  assert(p);
  free((void *)((char *)p - 8));
}
int sqlite3OsAllocationSize(void *p){
  return *(int *)((char *)p - 8);
}

/*


** TODO!
*/
#define sqlite3_release_memory(x) 0

#ifdef SQLITE_MEMDEBUG
/*--------------------------------------------------------------------------
** Begin code for memory allocation system test layer.
**
** Memory debugging is turned on by defining the SQLITE_MEMDEBUG macro.
*/

/* Figure out whether or not to store backtrace() information for each malloc.
** The backtrace() function is only used if SQLITE_MEMDEBUG is set to 2 or 
** greater and glibc is in use. If we don't want to use backtrace(), then just
** define it as an empty macro and set the amount of space reserved to 0.
*/
#if defined(__GLIBC__) && SQLITE_MEMDEBUG>1
  extern int backtrace(void **, int);
  #define TESTALLOC_STACKSIZE 128
  #define TESTALLOC_STACKFRAMES ((TESTALLOC_STACKSIZE-8)/sizeof(void*))
#else
  #define backtrace(x, y) 0
  #define TESTALLOC_STACKSIZE 0
  #define TESTALLOC_STACKFRAMES 0
#endif

/*
** Number of 32-bit guard words.  This should probably be a multiple of
** 2 since on 64-bit machines we want the value returned by sqliteMalloc()
** to be 8-byte aligned.
*/
#define TESTALLOC_NGUARD 2

/*
** Size reserved for storing file-name along with each malloc()ed blob.
*/
#define TESTALLOC_FILESIZE 64

/*
** Size reserved for storing the user string.
*/
#define TESTALLOC_USERSIZE 64
const char *sqlite3_malloc_id = 0;

/*
** Blocks used by the test layer have the following format:
**
**        <sizeof(void *) pNext pointer>
**        <sizeof(void *) pPrev pointer>
**        <TESTALLOC_NGUARD 32-bit guard words>
**            <The application level allocation>
**        <TESTALLOC_NGUARD 32-bit guard words>
**        <32-bit line number>
**        <TESTALLOC_FILESIZE bytes containing null-terminated file name>
**        <TESTALLOC_STACKSIZE bytes of backtrace() output>
*/ 

#define TESTALLOC_OFFSET_GUARD1(p)    (sizeof(void *) * 2)
#define TESTALLOC_OFFSET_DATA(p) ( \
  TESTALLOC_OFFSET_GUARD1(p) + sizeof(u32) * TESTALLOC_NGUARD \
)
#define TESTALLOC_OFFSET_GUARD2(p) ( \
  TESTALLOC_OFFSET_DATA(p) + sqlite3OsAllocationSize(p) - TESTALLOC_OVERHEAD \
)
#define TESTALLOC_OFFSET_LINENUMBER(p) ( \
  TESTALLOC_OFFSET_GUARD2(p) + sizeof(u32) * TESTALLOC_NGUARD \
)
#define TESTALLOC_OFFSET_FILENAME(p) ( \
  TESTALLOC_OFFSET_LINENUMBER(p) + sizeof(u32) \
)
#define TESTALLOC_OFFSET_USER(p) ( \
  TESTALLOC_OFFSET_FILENAME(p) + TESTALLOC_FILESIZE \
)
#define TESTALLOC_OFFSET_STACK(p) ( \
  TESTALLOC_OFFSET_USER(p) + TESTALLOC_USERSIZE + 8 - \
  (TESTALLOC_OFFSET_USER(p) % 8) \
)

#define TESTALLOC_OVERHEAD ( \
  sizeof(void *)*2 +                   /* pPrev and pNext pointers */   \
  TESTALLOC_NGUARD*sizeof(u32)*2 +              /* Guard words */       \
  sizeof(u32) + TESTALLOC_FILESIZE +   /* File and line number */       \
  TESTALLOC_USERSIZE +                 /* User string */                \
  TESTALLOC_STACKSIZE                  /* backtrace() stack */          \
)

/*
** For keeping track of the number of mallocs and frees.   This
** is used to check for memory leaks.  The iMallocFail and iMallocReset
** values are used to simulate malloc() failures during testing in 
** order to verify that the library correctly handles an out-of-memory
** condition.
*/
int sqlite3_nMalloc;         /* Number of sqliteMalloc() calls */
int sqlite3_nFree;           /* Number of sqliteFree() calls */
int sqlite3_memUsed;         /* TODO Total memory obtained from malloc */
int sqlite3_memMax;          /* TODO Mem usage high-water mark */
int sqlite3_iMallocFail;     /* Fail sqliteMalloc() after this many calls */
int sqlite3_iMallocReset = -1; /* When iMallocFail reaches 0, set to this */











/*
** Check for a simulated memory allocation failure.  Return true if
** the failure should be simulated.  Return false to proceed as normal.
*/
static int failMalloc(){
  SqliteTsd *pTsd = sqlite3Tsd();
  if( pTsd->isFail ){
    return 1;
  }
  if( sqlite3_iMallocFail>=0 ){
    sqlite3_iMallocFail--;
    if( sqlite3_iMallocFail==0 ){





      sqlite3_iMallocFail = sqlite3_iMallocReset;
      pTsd->isFail = 1;
      return 1;
    }
  }
  return 0;
}

/*
** The argument is a pointer returned by sqlite3OsMalloc() or Realloc().
** assert() that the first and last (TESTALLOC_NGUARD*4) bytes are set to the
** values set by the applyGuards() function.
*/

static void checkGuards(u32 *p)
{
  int i;
  char *zAlloc = (char *)p;
  char *z;

  /* First set of guard words */
  z = &zAlloc[TESTALLOC_OFFSET_GUARD1(p)];
  for(i=0; i<TESTALLOC_NGUARD; i++){
    assert(((u32 *)z)[i]==0xdead1122);
  }





  /* Second set of guard words */


  z = &zAlloc[TESTALLOC_OFFSET_GUARD2(p)];
  for(i=0; i<TESTALLOC_NGUARD; i++){
    u32 guard = 0;
    memcpy(&guard, &z[i*sizeof(u32)], sizeof(u32));
    assert(guard==0xdead3344);
  }
}

/*
** The argument is a pointer returned by sqlite3OsMalloc() or Realloc(). The
** first and last (TESTALLOC_NGUARD*4) bytes are set to known values for use as 
** guard-posts.
*/
static void applyGuards(u32 *p)
{
  int i;
  char *z;
  char *zAlloc = (char *)p;

  /* First set of guard words */
  z = &zAlloc[TESTALLOC_OFFSET_GUARD1(p)];
  for(i=0; i<TESTALLOC_NGUARD; i++){
    ((u32 *)z)[i] = 0xdead1122;
  }

  /* Second set of guard words */
  z = &zAlloc[TESTALLOC_OFFSET_GUARD2(p)];
  for(i=0; i<TESTALLOC_NGUARD; i++){
    static const int guard = 0xdead3344;
    memcpy(&z[i*sizeof(u32)], &guard, sizeof(u32));

  }

  /* Line number */
  z = &((char *)z)[TESTALLOC_NGUARD*sizeof(u32)];             /* Guard words */
  z = &zAlloc[TESTALLOC_OFFSET_LINENUMBER(p)];
  memcpy(z, &sqlite3Tsd()->iLine, sizeof(u32));

  /* File name */
  z = &zAlloc[TESTALLOC_OFFSET_FILENAME(p)];


  strncpy(z, sqlite3Tsd()->zFile, TESTALLOC_FILESIZE);


  z[TESTALLOC_FILESIZE - 1] = '\0';

  /* User string */
  z = &zAlloc[TESTALLOC_OFFSET_USER(p)];
  z[0] = 0;
  if( sqlite3_malloc_id ){
    strncpy(z, sqlite3_malloc_id, TESTALLOC_USERSIZE);
    z[TESTALLOC_USERSIZE-1] = 0;
  }

  /* backtrace() stack */
  z = &zAlloc[TESTALLOC_OFFSET_STACK(p)];
  backtrace((void **)z, TESTALLOC_STACKFRAMES);

  /* Sanity check to make sure checkGuards() is working */
  checkGuards(p);
}

static void *getOsPointer(void *p)
{
  char *z = (char *)p;
  return (void *)(&z[-1 * TESTALLOC_OFFSET_DATA(p)]);
}

/*
** The argument points to an Os level allocation. Link it into the threads list

** of allocations.
*/
static void linkAlloc(void *p){
  SqliteTsd *pTsd = sqlite3Tsd();
  void **pp = (void **)p;
  pp[0] = 0;
  pp[1] = pTsd->pFirst;
  if( pTsd->pFirst ){
    ((void **)pTsd->pFirst)[0] = p;
  }
  pTsd->pFirst = p;
}

/*
** The argument points to an Os level allocation. Unlinke it from the threads
** list of allocations.
*/
static void unlinkAlloc(void *p)
{
  SqliteTsd *pTsd = sqlite3Tsd();
  void **pp = (void **)p;
  if( p==pTsd->pFirst ){


    assert(!pp[0]);
    assert(!pp[1] || ((void **)(pp[1]))[0]==p);
    pTsd->pFirst = pp[1];
    if( pTsd->pFirst ){
      ((void **)pTsd->pFirst)[0] = 0;
    }
  }else{
    void **pprev = pp[0];
    void **pnext = pp[1];
    assert(pprev);
    assert(pprev[1]==p);
    pprev[1] = (void *)pnext;

    if( pnext ){
      assert(pnext[0]==p);
      pnext[0] = (void *)pprev;
    }
  }
}

/*
** Pointer p is a pointer to an OS level allocation that has just been
** realloc()ed. Set the list pointers that point to this entry to it's new
** location.
*/
static void relinkAlloc(void *p)
{
  void **pp = (void **)p;
  if( pp[0] ){

    ((void **)(pp[0]))[1] = p;

  }else{
    SqliteTsd *pTsd = sqlite3Tsd();

    pTsd->pFirst = p;
  }
  if( pp[1] ){


    ((void **)(pp[1]))[0] = p;
  }
}


/*
** This function sets the result of the Tcl interpreter passed as an argument
** to a list containing an entry for each currently outstanding call made to
** sqliteMalloc and friends by the current thread.



**
** Todo: We could have a version of this function that outputs to stdout, 
** to debug memory leaks when Tcl is not available.
*/
#ifdef TCLSH



#include <tcl.h>
int sqlite3OutstandingMallocs(Tcl_Interp *interp){
  void *p;
  SqliteTsd *pTsd = sqlite3Tsd();
  Tcl_Obj *pRes = Tcl_NewObj();
  Tcl_IncrRefCount(pRes);


  for(p=pTsd->pFirst; p; p=((void **)p)[1]){
    Tcl_Obj *pEntry = Tcl_NewObj();
    Tcl_Obj *pStack = Tcl_NewObj();
    char *z;
    u32 iLine;
    int nBytes = sqlite3OsAllocationSize(p) - TESTALLOC_OVERHEAD;
    char *zAlloc = (char *)p;
    int i;

    Tcl_ListObjAppendElement(0, pEntry, Tcl_NewIntObj(nBytes));

    z = &zAlloc[TESTALLOC_OFFSET_FILENAME(p)];
    Tcl_ListObjAppendElement(0, pEntry, Tcl_NewStringObj(z, -1));

    z = &zAlloc[TESTALLOC_OFFSET_LINENUMBER(p)];
    memcpy(&iLine, z, sizeof(u32));
    Tcl_ListObjAppendElement(0, pEntry, Tcl_NewIntObj(iLine));

    z = &zAlloc[TESTALLOC_OFFSET_USER(p)];
    Tcl_ListObjAppendElement(0, pEntry, Tcl_NewStringObj(z, -1));

    z = &zAlloc[TESTALLOC_OFFSET_STACK(p)];
    for(i=0; i<TESTALLOC_STACKFRAMES; i++){
      char zHex[128];
      sprintf(zHex, "%p", ((void **)z)[i]);
      Tcl_ListObjAppendElement(0, pStack, Tcl_NewStringObj(zHex, -1));
    }

    Tcl_ListObjAppendElement(0, pEntry, pStack);
    Tcl_ListObjAppendElement(0, pRes, pEntry);
  }

  Tcl_ResetResult(interp);
  Tcl_SetObjResult(interp, pRes);
  Tcl_DecrRefCount(pRes);
  return TCL_OK;
}
#endif

/*
** This is the test layer's wrapper around sqlite3OsMalloc().
*/
static void * OSMALLOC(int n){

  if( !failMalloc() ){
    u32 *p;
    p = (u32 *)sqlite3OsMalloc(n + TESTALLOC_OVERHEAD);
    assert(p);
    sqlite3_nMalloc++;
    applyGuards(p);
    linkAlloc(p);
    return (void *)(&p[TESTALLOC_NGUARD + 2*sizeof(void *)/sizeof(u32)]);
  }


  return 0;
}




/*
** This is the test layer's wrapper around sqlite3OsFree(). The argument is a
** pointer to the space allocated for the application to use.

*/
void OSFREE(void *pFree){
  u32 *p = (u32 *)getOsPointer(pFree);   /* p points to Os level allocation */
  checkGuards(p);
  unlinkAlloc(p);
  sqlite3OsFree(p);
  sqlite3_nFree++;
}





/*
** This is the test layer's wrapper around sqlite3OsRealloc().
*/
void * OSREALLOC(void *pRealloc, int n){
  if( !failMalloc() ){
    u32 *p = (u32 *)getOsPointer(pRealloc);
    checkGuards(p);
    p = sqlite3OsRealloc(p, n + TESTALLOC_OVERHEAD);
    applyGuards(p);
    relinkAlloc(p);
    return (void *)(&p[TESTALLOC_NGUARD + 2*sizeof(void *)/sizeof(u32)]);
  }
  return 0;
}




void OSMALLOC_FAILED(){
  sqlite3Tsd()->isFail = 0;

}











#else
#define OSMALLOC(x) sqlite3OsMalloc(x)
#define OSREALLOC(x,y) sqlite3OsRealloc(x,y)
#define OSFREE(x) sqlite3OsFree(x)
#define OSMALLOC_FAILED()

#endif
/*
** End code for memory allocation system test layer.
**--------------------------------------------------------------------------*/

/*
** Allocate and return N bytes of uninitialised memory by calling
** sqlite3OsMalloc(). If the Malloc() call fails, attempt to free memory 
** by calling sqlite3_release_memory().
*/
void *sqlite3MallocRaw(int n){
  SqliteTsd *pTsd = sqlite3Tsd();
  void *p = 0;

  if( n>0 && !pTsd->mallocFailed ){
    while( !(p = OSMALLOC(n)) && sqlite3_release_memory(n) );
    if( !p ){
      sqlite3Tsd()->mallocFailed = 1;
      OSMALLOC_FAILED();
    }
  }
  return p;
}

/*
** Resize the allocation at p to n bytes by calling sqlite3OsRealloc(). The
** pointer to the new allocation is returned.  If the Realloc() call fails,
** attempt to free memory by calling sqlite3_release_memory().
*/
void *sqlite3Realloc(void *p, int n){


  SqliteTsd *pTsd = sqlite3Tsd();
  if( pTsd->mallocFailed ){
    return 0;
  }




  if( !p ){
    return sqlite3Malloc(n);
  }else{
    void *np = 0;
    while( !(np = OSREALLOC(p, n)) && sqlite3_release_memory(n) );
    if( !np ){
      pTsd->mallocFailed = 1;
      OSMALLOC_FAILED();
    }
    return np;
  }
}

/*
** Free the memory pointed to by p. p must be either a NULL pointer or a 
** value returned by a previous call to sqlite3Malloc() or sqlite3Realloc().
*/
void sqlite3FreeX(void *p){
  if( p ){
    OSFREE(p);


  }
}

/*
** A version of sqliteMalloc() that is always a function, not a macro.

** Currently, this is used only to alloc only used drawback.
*/

void *sqlite3MallocX(int n){
  return sqliteMalloc(n);
}

/*

** sqlite3Malloc
** sqlite3ReallocOrFree
**
** These two are implemented as wrappers around sqlite3MallocRaw(), 
** sqlite3Realloc() and sqlite3Free().
*/ 
void *sqlite3Malloc(int n){
  void *p = sqlite3MallocRaw(n);
  if( p ){



    memset(p, 0, n);
  }
  return p;
}
void sqlite3ReallocOrFree(void **pp, int n){





  void *p = sqlite3Realloc(*pp, n);
  if( !p ){

    sqlite3FreeX(*pp);
  }
  *pp = p;
}

/*
** Make a copy of a string in memory obtained from sqliteMalloc(). These 

** functions call sqlite3MallocRaw() directly instead of sqliteMalloc(). This




** is because when memory debugging is turned on, these two functions are 




















** called via macros that record the current file and line number in the

** SqliteTsd structure.
*/
char *sqlite3StrDup(const char *z){
  char *zNew;
  if( z==0 ) return 0;
  zNew = sqlite3MallocRaw(strlen(z)+1);
  if( zNew ) strcpy(zNew, z);
  return zNew;
}
char *sqlite3StrNDup(const char *z, int n){
  char *zNew;
  if( z==0 ) return 0;
  zNew = sqlite3MallocRaw(n+1);
  if( zNew ){
    memcpy(zNew, z, n);
    zNew[n] = 0;
  }
  return zNew;
}















/*
** Create a string from the 2nd and subsequent arguments (up to the
** first NULL argument), store the string in memory obtained from
** sqliteMalloc() and make the pointer indicated by the 1st argument
** point to that string.  The 1st argument must either be NULL or 
** point to memory obtained from sqliteMalloc().
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
  *zResult = 0;
  va_start(ap, pz);
  while( (z = va_arg(ap, const char*))!=0 ){
    strcpy(zResult, z);
    zResult += strlen(zResult);
  }
  va_end(ap);
#ifdef SQLITE_MEMDEBUG
#if SQLITE_MEMDEBUG>1
  fprintf(stderr,"string at 0x%x is %s\n", (int)*pz, *pz);
#endif
#endif
}

/*
** Set the most recent error code and error string for the sqlite
** handle "db". The error code is set to "err_code".
**
** If it is not NULL, string zFormat specifies the format of the







<
<
<
<
<







610
611
612
613
614
615
616





617
618
619
620
621
622
623
  *zResult = 0;
  va_start(ap, pz);
  while( (z = va_arg(ap, const char*))!=0 ){
    strcpy(zResult, z);
    zResult += strlen(zResult);
  }
  va_end(ap);





}

/*
** Set the most recent error code and error string for the sqlite
** handle "db". The error code is set to "err_code".
**
** If it is not NULL, string zFormat specifies the format of the
1022
1023
1024
1025
1026
1027
1028
1029











1030
1031
1032
1033
1034
1035
1036
1037








1038
1039











  return p;
}
#endif

/*
** Return a pointer to the SqliteTsd associated with the calling thread.
*/
static SqliteTsd tsd = { 0 };











SqliteTsd *sqlite3Tsd(){
  return &tsd;
}

void sqlite3ClearMallocFailed(){
  sqlite3Tsd()->mallocFailed = 0;
}





























|
>
>
>
>
>
>
>
>
>
>
>




|



>
>
>
>
>
>
>
>
|

>
>
>
>
>
>
>
>
>
>
>
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
  return p;
}
#endif

/*
** Return a pointer to the SqliteTsd associated with the calling thread.
*/
static SqliteTsd tsd = {
  0                    /* mallocFailed flag */
#ifndef NDEBUG
  , 1                  /* mallocAllowed flag */
#endif
#ifndef SQLITE_MEMDEBUG
  , 0
  , 0
  , 0
  , 0
#endif
};
SqliteTsd *sqlite3Tsd(){
  return &tsd;
}

void sqlite3MallocClearFailed(){
  sqlite3Tsd()->mallocFailed = 0;
}

#ifndef NDEBUG
/*
** This function sets a flag in the thread-specific-data structure that will
** cause an assert to fail if sqliteMalloc() or sqliteRealloc() is called.
*/
void sqlite3MallocDisallow(){
  assert(sqlite3Tsd()->mallocAllowed);
  sqlite3Tsd()->mallocAllowed = 0;
}

/*
** This function clears the flag set in the thread-specific-data structure set
** by sqlite3MallocDisallow().
*/
void sqlite3MallocAllow(){
  assert(!sqlite3Tsd()->mallocAllowed);
  sqlite3Tsd()->mallocAllowed = 1;
}
#endif


Changes to src/vacuum.c.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
**
*************************************************************************
** This file contains code used to implement the VACUUM command.
**
** Most of the code in this file may be omitted by defining the
** SQLITE_OMIT_VACUUM macro.
**
** $Id: vacuum.c,v 1.51 2005/12/06 17:48:32 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "vdbeInt.h"
#include "os.h"

#ifndef SQLITE_OMIT_VACUUM
/*







|







10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
**
*************************************************************************
** This file contains code used to implement the VACUUM command.
**
** Most of the code in this file may be omitted by defining the
** SQLITE_OMIT_VACUUM macro.
**
** $Id: vacuum.c,v 1.52 2005/12/09 14:25:09 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "vdbeInt.h"
#include "os.h"

#ifndef SQLITE_OMIT_VACUUM
/*
307
308
309
310
311
312
313



314
315
316
317
318
319


320
321
322
323
324
325
326
  ** by manually setting the autoCommit flag to true and detaching the
  ** vacuum database. The vacuum_db journal file is deleted when the pager
  ** is closed by the DETACH.
  */
  db->autoCommit = 1;

  if( pDetach ){



    ((Vdbe *)pDetach)->expired = 0;
    sqlite3_step(pDetach);
    rc2 = sqlite3_finalize(pDetach);
    if( rc==SQLITE_OK ){
      rc = rc2;
    }


  }

  /* If one of the execSql() calls above returned SQLITE_NOMEM, then the
  ** mallocFailed flag will be clear (because execSql() calls sqlite3_exec()).
  ** Fix this so the flag and return code match.
  */
  if( rc==SQLITE_NOMEM ){







>
>
>






>
>







307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
  ** by manually setting the autoCommit flag to true and detaching the
  ** vacuum database. The vacuum_db journal file is deleted when the pager
  ** is closed by the DETACH.
  */
  db->autoCommit = 1;

  if( pDetach ){
    int mf = sqlite3Tsd()->mallocFailed;
    sqlite3Tsd()->mallocFailed = 0;
    sqlite3MallocDisallow();
    ((Vdbe *)pDetach)->expired = 0;
    sqlite3_step(pDetach);
    rc2 = sqlite3_finalize(pDetach);
    if( rc==SQLITE_OK ){
      rc = rc2;
    }
    sqlite3MallocAllow();
    sqlite3Tsd()->mallocFailed = mf;
  }

  /* If one of the execSql() calls above returned SQLITE_NOMEM, then the
  ** mallocFailed flag will be clear (because execSql() calls sqlite3_exec()).
  ** Fix this so the flag and return code match.
  */
  if( rc==SQLITE_NOMEM ){
Changes to src/vdbe.c.
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
**
** Various scripts scan this source file in order to generate HTML
** documentation, headers files, or other derived files.  The formatting
** of the code in this file is, therefore, important.  See other comments
** in this file for details.  If in doubt, do not deviate from existing
** commenting and indentation practices when changing or adding code.
**
** $Id: vdbe.c,v 1.502 2005/12/06 12:53:01 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>
#include "vdbeInt.h"

/*







|







39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
**
** Various scripts scan this source file in order to generate HTML
** documentation, headers files, or other derived files.  The formatting
** of the code in this file is, therefore, important.  See other comments
** in this file for details.  If in doubt, do not deviate from existing
** commenting and indentation practices when changing or adding code.
**
** $Id: vdbe.c,v 1.503 2005/12/09 14:25:09 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>
#include "vdbeInt.h"

/*
386
387
388
389
390
391
392






393
394
395
396
397
398
399
400
401
402
403
404
#endif
#ifndef NDEBUG
  Mem *pStackLimit;
#endif

  if( p->magic!=VDBE_MAGIC_RUN ) return SQLITE_MISUSE;
  assert( db->magic==SQLITE_MAGIC_BUSY );






  assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY );
  p->rc = SQLITE_OK;
  assert( p->explain==0 );
  pTos = p->pTos;
  if( sqlite3Tsd()->mallocFailed ) goto no_mem;
  if( p->popStack ){
    popStack(&pTos, p->popStack);
    p->popStack = 0;
  }
  p->resOnStack = 0;
  db->busyHandler.nBusy = 0;
  CHECK_FOR_INTERRUPT;







>
>
>
>
>
>



<
<







386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401


402
403
404
405
406
407
408
#endif
#ifndef NDEBUG
  Mem *pStackLimit;
#endif

  if( p->magic!=VDBE_MAGIC_RUN ) return SQLITE_MISUSE;
  assert( db->magic==SQLITE_MAGIC_BUSY );
  pTos = p->pTos;
  if( p->rc==SQLITE_NOMEM ){
    /* This happens if a malloc() inside a call to sqlite3_column_text() or
    ** sqlite3_column_text16() failed.  */
    goto no_mem;
  }
  assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY );
  p->rc = SQLITE_OK;
  assert( p->explain==0 );


  if( p->popStack ){
    popStack(&pTos, p->popStack);
    p->popStack = 0;
  }
  p->resOnStack = 0;
  db->busyHandler.nBusy = 0;
  CHECK_FOR_INTERRUPT;
3894
3895
3896
3897
3898
3899
3900

3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
     pOp->p1, db->aDb[iDb].zName, zMaster, pOp->p3);
  if( zSql==0 ) goto no_mem;
  sqlite3SafetyOff(db);
  assert( db->init.busy==0 );
  db->init.busy = 1;
  assert(0==sqlite3Tsd()->mallocFailed);
  rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0);

  db->init.busy = 0;
  sqlite3SafetyOn(db);
  if( rc==SQLITE_NOMEM ){
    sqlite3Tsd()->mallocFailed = 1;
    goto no_mem;
  }
  sqliteFree(zSql);
  break;  
}

#ifndef SQLITE_OMIT_ANALYZE
/* Opcode: LoadAnalysis P1 * *
**
** Read the sqlite_stat1 table for database P1 and load the content







>






<







3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911

3912
3913
3914
3915
3916
3917
3918
     pOp->p1, db->aDb[iDb].zName, zMaster, pOp->p3);
  if( zSql==0 ) goto no_mem;
  sqlite3SafetyOff(db);
  assert( db->init.busy==0 );
  db->init.busy = 1;
  assert(0==sqlite3Tsd()->mallocFailed);
  rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0);
  sqliteFree(zSql);
  db->init.busy = 0;
  sqlite3SafetyOn(db);
  if( rc==SQLITE_NOMEM ){
    sqlite3Tsd()->mallocFailed = 1;
    goto no_mem;
  }

  break;  
}

#ifndef SQLITE_OMIT_ANALYZE
/* Opcode: LoadAnalysis P1 * *
**
** Read the sqlite_stat1 table for database P1 and load the content
Changes to src/vdbeapi.c.
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
    assert( p->aOp[p->nOp-1].p3!=0 );
    assert( p->aOp[p->nOp-1].p3type==P3_DYNAMIC );
    db->xProfile(db->pProfileArg, p->aOp[p->nOp-1].p3, elapseTime);
  }
#endif

  sqlite3Error(p->db, rc, p->zErrMsg ? "%s" : 0, p->zErrMsg);
  sqlite3ClearMallocFailed();
  return rc;
}

/*
** Extract the user data from a sqlite3_context structure and return a
** pointer to it.
*/







|







237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
    assert( p->aOp[p->nOp-1].p3!=0 );
    assert( p->aOp[p->nOp-1].p3type==P3_DYNAMIC );
    db->xProfile(db->pProfileArg, p->aOp[p->nOp-1].p3, elapseTime);
  }
#endif

  sqlite3Error(p->db, rc, p->zErrMsg ? "%s" : 0, p->zErrMsg);
  sqlite3MallocClearFailed();
  return rc;
}

/*
** Extract the user data from a sqlite3_context structure and return a
** pointer to it.
*/
373
374
375
376
377
378
379
































380
381
382
383
384
385


386


387
388
389


390
391
392


393
394
395


396
397
398


399
400
401


402
403
404


405
406
407
408
409
410
411
412
413


414
415
416
417
418
419
420
    static Mem nullMem;
    if( nullMem.flags==0 ){ nullMem.flags = MEM_Null; }
    sqlite3Error(pVm->db, SQLITE_RANGE, 0);
    return &nullMem;
  }
  return &pVm->pTos[(1-vals)+i];
}

































/**************************** sqlite3_column_  *******************************
** The following routines are used to access elements of the current row
** in the result set.
*/
const void *sqlite3_column_blob(sqlite3_stmt *pStmt, int i){


  return sqlite3_value_blob( columnMem(pStmt,i) );


}
int sqlite3_column_bytes(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_bytes( columnMem(pStmt,i) );


}
int sqlite3_column_bytes16(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_bytes16( columnMem(pStmt,i) );


}
double sqlite3_column_double(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_double( columnMem(pStmt,i) );


}
int sqlite3_column_int(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_int( columnMem(pStmt,i) );


}
sqlite_int64 sqlite3_column_int64(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_int64( columnMem(pStmt,i) );


}
const unsigned char *sqlite3_column_text(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_text( columnMem(pStmt,i) );


}
#if 0
sqlite3_value *sqlite3_column_value(sqlite3_stmt *pStmt, int i){
  return columnMem(pStmt, i);
}
#endif
#ifndef SQLITE_OMIT_UTF16
const void *sqlite3_column_text16(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_text16( columnMem(pStmt,i) );


}
#endif /* SQLITE_OMIT_UTF16 */
int sqlite3_column_type(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_type( columnMem(pStmt,i) );
}

/*







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>






>
>
|
>
>


|
>
>


|
>
>


|
>
>


|
>
>


|
>
>


|
>
>








|
>
>







373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
    static Mem nullMem;
    if( nullMem.flags==0 ){ nullMem.flags = MEM_Null; }
    sqlite3Error(pVm->db, SQLITE_RANGE, 0);
    return &nullMem;
  }
  return &pVm->pTos[(1-vals)+i];
}

/*
** This function is called after invoking an sqlite3_value_XXX function on a 
** column value (i.e. a value returned by evaluating an SQL expression in the
** select list of a SELECT statement) that may cause a malloc() failure. If 
** malloc() has failed, the threads mallocFailed flag is cleared and the result
** code of statement pStmt set to SQLITE_NOMEM.
**
** Specificly, this is called from within:
**
**     sqlite3_column_int()
**     sqlite3_column_int64()
**     sqlite3_column_text()
**     sqlite3_column_text16()
**     sqlite3_column_real()
**     sqlite3_column_bytes()
**     sqlite3_column_bytes16()
**
** But not for sqlite3_column_blob(), which never calls malloc().
*/
static void columnMallocFailure(sqlite3_stmt *pStmt)
{
  /* If malloc() failed during an encoding conversion within an
  ** sqlite3_column_XXX API, then set the return code of the statement to
  ** SQLITE_NOMEM. The next call to _step() (if any) will return SQLITE_ERROR
  ** and _finalize() will return NOMEM.
  */
  if( sqlite3Tsd()->mallocFailed ){
    ((Vdbe *)pStmt)->rc = SQLITE_NOMEM;
    sqlite3MallocClearFailed();
  }
}

/**************************** sqlite3_column_  *******************************
** The following routines are used to access elements of the current row
** in the result set.
*/
const void *sqlite3_column_blob(sqlite3_stmt *pStmt, int i){
  const void *val;
  sqlite3MallocDisallow();
  val = sqlite3_value_blob( columnMem(pStmt,i) );
  sqlite3MallocAllow();
  return val;
}
int sqlite3_column_bytes(sqlite3_stmt *pStmt, int i){
  int val = sqlite3_value_bytes( columnMem(pStmt,i) );
  columnMallocFailure(pStmt);
  return val;
}
int sqlite3_column_bytes16(sqlite3_stmt *pStmt, int i){
  int val = sqlite3_value_bytes16( columnMem(pStmt,i) );
  columnMallocFailure(pStmt);
  return val;
}
double sqlite3_column_double(sqlite3_stmt *pStmt, int i){
  double val = sqlite3_value_double( columnMem(pStmt,i) );
  columnMallocFailure(pStmt);
  return val;
}
int sqlite3_column_int(sqlite3_stmt *pStmt, int i){
  int val = sqlite3_value_int( columnMem(pStmt,i) );
  columnMallocFailure(pStmt);
  return val;
}
sqlite_int64 sqlite3_column_int64(sqlite3_stmt *pStmt, int i){
  sqlite_int64 val = sqlite3_value_int64( columnMem(pStmt,i) );
  columnMallocFailure(pStmt);
  return val;
}
const unsigned char *sqlite3_column_text(sqlite3_stmt *pStmt, int i){
  const unsigned char *val = sqlite3_value_text( columnMem(pStmt,i) );
  columnMallocFailure(pStmt);
  return val;
}
#if 0
sqlite3_value *sqlite3_column_value(sqlite3_stmt *pStmt, int i){
  return columnMem(pStmt, i);
}
#endif
#ifndef SQLITE_OMIT_UTF16
const void *sqlite3_column_text16(sqlite3_stmt *pStmt, int i){
  const void *val = sqlite3_value_text16( columnMem(pStmt,i) );
  columnMallocFailure(pStmt);
  return val;
}
#endif /* SQLITE_OMIT_UTF16 */
int sqlite3_column_type(sqlite3_stmt *pStmt, int i){
  return sqlite3_value_type( columnMem(pStmt,i) );
}

/*
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
  }
  N += useType*n;
  ret = xFunc(&p->aColName[N]);

  /* A malloc may have failed inside of the xFunc() call. If this is the case,
  ** clear the mallocFailed flag and return NULL.
  */
  sqlite3ClearMallocFailed();
  return ret;
}


/*
** Return the name of the Nth column of the result set returned by SQL
** statement pStmt.
*/
const char *sqlite3_column_name(sqlite3_stmt *pStmt, int N){
  return columnName(pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, 0);







|


<







498
499
500
501
502
503
504
505
506
507

508
509
510
511
512
513
514
  }
  N += useType*n;
  ret = xFunc(&p->aColName[N]);

  /* A malloc may have failed inside of the xFunc() call. If this is the case,
  ** clear the mallocFailed flag and return NULL.
  */
  sqlite3MallocClearFailed();
  return ret;
}


/*
** Return the name of the Nth column of the result set returned by SQL
** statement pStmt.
*/
const char *sqlite3_column_name(sqlite3_stmt *pStmt, int N){
  return columnName(pStmt, N, (const void*(*)(Mem*))sqlite3_value_text, 0);
Changes to src/vdbeaux.c.
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
** the Vdbe. In these cases we can just copy the pointer.
**
** If addr<0 then change P3 on the most recently inserted instruction.
*/
void sqlite3VdbeChangeP3(Vdbe *p, int addr, const char *zP3, int n){
  Op *pOp;
  assert( p->magic==VDBE_MAGIC_INIT );
  if( p==0 || p->aOp==0 ){
    if (n != P3_KEYINFO) {
      freeP3(n, (void*)*(char**)&zP3);
    }
    return;
  }
  if( addr<0 || addr>=p->nOp ){
    addr = p->nOp - 1;







|







411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
** the Vdbe. In these cases we can just copy the pointer.
**
** If addr<0 then change P3 on the most recently inserted instruction.
*/
void sqlite3VdbeChangeP3(Vdbe *p, int addr, const char *zP3, int n){
  Op *pOp;
  assert( p->magic==VDBE_MAGIC_INIT );
  if( p==0 || p->aOp==0 || sqlite3Tsd()->mallocFailed ){
    if (n != P3_KEYINFO) {
      freeP3(n, (void*)*(char**)&zP3);
    }
    return;
  }
  if( addr<0 || addr>=p->nOp ){
    addr = p->nOp - 1;
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
/*
** Replace the P3 field of the most recently coded instruction with
** comment text.
*/
void sqlite3VdbeComment(Vdbe *p, const char *zFormat, ...){
  va_list ap;
  assert( p->nOp>0 );
  assert( p->aOp==0 || p->aOp[p->nOp-1].p3==0 );
  va_start(ap, zFormat);
  sqlite3VdbeChangeP3(p, -1, sqlite3VMPrintf(zFormat, ap), P3_DYNAMIC);
  va_end(ap);
}
#endif

/*







|







466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
/*
** Replace the P3 field of the most recently coded instruction with
** comment text.
*/
void sqlite3VdbeComment(Vdbe *p, const char *zFormat, ...){
  va_list ap;
  assert( p->nOp>0 );
  assert( p->aOp==0 || p->aOp[p->nOp-1].p3==0 || sqlite3Tsd()->mallocFailed );
  va_start(ap, zFormat);
  sqlite3VdbeChangeP3(p, -1, sqlite3VMPrintf(zFormat, ap), P3_DYNAMIC);
  va_end(ap);
}
#endif

/*
Changes to test/malloc3.test.
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
#
#***********************************************************************
#
# This file contains tests to ensure that the library handles malloc() failures
# correctly. The emphasis of these tests are the _prepare(), _step() and
# _finalize() calls.
#
# $Id: malloc3.test,v 1.3 2005/12/07 06:27:45 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Only run these tests if memory debugging is turned on.
if {[info command sqlite_malloc_stat]==""} {
   puts "Skipping malloc tests: not compiled with -DSQLITE_MEMDEBUG..."







|







9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
#
#***********************************************************************
#
# This file contains tests to ensure that the library handles malloc() failures
# correctly. The emphasis of these tests are the _prepare(), _step() and
# _finalize() calls.
#
# $Id: malloc3.test,v 1.4 2005/12/09 14:25:12 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Only run these tests if memory debugging is turned on.
if {[info command sqlite_malloc_stat]==""} {
   puts "Skipping malloc tests: not compiled with -DSQLITE_MEMDEBUG..."
576
577
578
579
580
581
582

583
584
585
586
587
588
589
590
591




592
593
# puts "PREP $iterid $v"
        db eval $v
        incr pc
      }

      default { error "Unknown switch: $k" }
    }

  }
}

# Turn of the Tcl interface's prepared statement caching facility.
db cache size 0

#run_test $::run_test_script 59 97 
run_test $::run_test_script
sqlite_malloc_fail 0




finish_test








>






|
|

>
>
>
>


576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
# puts "PREP $iterid $v"
        db eval $v
        incr pc
      }

      default { error "Unknown switch: $k" }
    }
# if {$iFail > ($iFailStart+1)} return
  }
}

# Turn of the Tcl interface's prepared statement caching facility.
db cache size 0

run_test $::run_test_script 
# run_test [lrange $::run_test_script 0 3] 0 63
sqlite_malloc_fail 0
db close

pp_check_for_leaks

finish_test

Changes to test/malloc4.test.
8
9
10
11
12
13
14
15
16
17
18




19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50












51
52
53
54
55
56
57
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# This file contains tests to ensure that the library handles malloc() failures
# correctly. The emphasis in this file is on sqlite3_column_XXX() APIs.
#
# $Id: malloc4.test,v 1.1 2005/12/07 06:27:45 danielk1977 Exp $

#---------------------------------------------------------------------------
# NOTES ON EXPECTED BEHAVIOUR




#
#---------------------------------------------------------------------------

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Only run these tests if memory debugging is turned on.
if {[info command sqlite_malloc_stat]==""} {
   puts "Skipping malloc tests: not compiled with -DSQLITE_MEMDEBUG..."
   finish_test
   return
}


proc do_stmt_test {id sql} {
  set ::sql $sql
  set go 1
  for {set n 1} {$go} {incr n} {
    set testid "malloc4-$id.(iFail $n)"

    # Prepare the statement
    do_test ${testid}.1 {
      set ::STMT [sqlite3_prepare $::DB $sql -1 TAIL]
      expr [string length $::STMT] > 0
    } {1}

    # Set the Nth malloc() to fail.
    sqlite_malloc_fail $n

    # Test malloc failure in the _name(), _name16(), decltype() and
    # decltype16() APIs. Calls that occur after the malloc() failure should
    # return NULL. No error is raised though.












    do_test ${testid}.2.1 {
      set mf1 [expr [lindex [sqlite_malloc_stat] 2] <= 0]
      set ::name8  [sqlite3_column_name $::STMT 0]
      set mf2 [expr [lindex [sqlite_malloc_stat] 2] <= 0]
      expr {$mf1 == $mf2 || $::name8 == ""}
    } {1}
    do_test ${testid}.2.2 {







|



>
>
>
>












<



















>
>
>
>
>
>
>
>
>
>
>
>







8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# This file contains tests to ensure that the library handles malloc() failures
# correctly. The emphasis in this file is on sqlite3_column_XXX() APIs.
#
# $Id: malloc4.test,v 1.2 2005/12/09 14:25:12 danielk1977 Exp $

#---------------------------------------------------------------------------
# NOTES ON EXPECTED BEHAVIOUR
#
# [193] When a memory allocation failure occurs during sqlite3_column_name(),
#       sqlite3_column_name16(), sqlite3_column_decltype(), or
#       sqlite3_column_decltype16() the function shall return NULL.
#
#---------------------------------------------------------------------------

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Only run these tests if memory debugging is turned on.
if {[info command sqlite_malloc_stat]==""} {
   puts "Skipping malloc tests: not compiled with -DSQLITE_MEMDEBUG..."
   finish_test
   return
}


proc do_stmt_test {id sql} {
  set ::sql $sql
  set go 1
  for {set n 1} {$go} {incr n} {
    set testid "malloc4-$id.(iFail $n)"

    # Prepare the statement
    do_test ${testid}.1 {
      set ::STMT [sqlite3_prepare $::DB $sql -1 TAIL]
      expr [string length $::STMT] > 0
    } {1}

    # Set the Nth malloc() to fail.
    sqlite_malloc_fail $n

    # Test malloc failure in the _name(), _name16(), decltype() and
    # decltype16() APIs. Calls that occur after the malloc() failure should
    # return NULL. No error is raised though.
    #
    # ${testid}.2.1 - Call _name()
    # ${testid}.2.2 - Call _name16()
    # ${testid}.2.3 - Call _name()
    # ${testid}.2.4 - Check that the return values of the above three calls are
    #                 consistent with each other and with the simulated
    #                 malloc() failures.
    #
    # Because the code that implements the _decltype() and _decltype16() APIs
    # is the same as the _name() and _name16() implementations, we don't worry
    # about explicitly testing them.
    #
    do_test ${testid}.2.1 {
      set mf1 [expr [lindex [sqlite_malloc_stat] 2] <= 0]
      set ::name8  [sqlite3_column_name $::STMT 0]
      set mf2 [expr [lindex [sqlite_malloc_stat] 2] <= 0]
      expr {$mf1 == $mf2 || $::name8 == ""}
    } {1}
    do_test ${testid}.2.2 {
74
75
76
77
78
79
80









































































81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108



109

110
111
112
113
114
        $::name8 == $::name8_2 && $::name16 == $::name8 && !$::mallocFailed ||
        $::name8 == $::name8_2 && $::name16 == "" &&        $::mallocFailed ||
        $::name8 == $::name16 && $::name8_2 == "" &&        $::mallocFailed ||
        $::name8_2 == $::name16 && $::name8 == "" &&        $::mallocFailed
      }
    } {1}










































































    if {$::mallocFailed == 0} {
      sqlite_malloc_fail 0
      set go 0
    }

if 0 {
    # Test that if a malloc() failed the next call to sqlite3_step() returns
    # SQLITE_ERROR. If malloc() did not fail, it should return SQLITE_ROW.
    #
    # Before running sqlite3_step(), make sure that malloc() is not about to
    # fail. Memory allocation failures that occur within sqlite3_step() are
    # tested elsewhere.
    do_test ${testid}.3 {
      set rc [sqlite3_step $::STMT]
      list [expr $rc=="SQLITE_ERROR"] [expr $rc=="SQLITE_ROW"]
    } [list $mallocFailed [expr !$mallocFailed]]
}

    do_test ${testid}.4 {
      sqlite3_finalize $::STMT
    } {SQLITE_OK}
  }
}

execsql {
  CREATE TABLE tbl(
    the_first_reasonably_long_column_name that_also_has_quite_a_lengthy_type
  );



}

do_stmt_test 1 "SELECT * FROM tbl"

sqlite_malloc_fail 0
finish_test








>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|



<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<
<







>
>
>

>





89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172

















173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
        $::name8 == $::name8_2 && $::name16 == $::name8 && !$::mallocFailed ||
        $::name8 == $::name8_2 && $::name16 == "" &&        $::mallocFailed ||
        $::name8 == $::name16 && $::name8_2 == "" &&        $::mallocFailed ||
        $::name8_2 == $::name16 && $::name8 == "" &&        $::mallocFailed
      }
    } {1}

    # Step the statement so that we can call _text() and _text16().  Before
    # running sqlite3_step(), make sure that malloc() is not about to fail.
    # Memory allocation failures that occur within sqlite3_step() are tested
    # elsewhere.
    set mf [lindex [sqlite_malloc_stat] 2]
    sqlite_malloc_fail 0
    do_test ${testid}.3 {
      sqlite3_step $::STMT
    } {SQLITE_ROW}
    sqlite_malloc_fail $mf

    # Test for malloc() failures within _text() and _text16().
    #
    do_test ${testid}.4.1 {
      set ::text8 [sqlite3_column_text $::STMT 0]
      set mf [expr [lindex [sqlite_malloc_stat] 2] <= 0 && !$::mallocFailed]
      expr {$mf==0 || $::text8 == ""}
    } {1}
    do_test ${testid}.4.2 {
      set ::text16 [sqlite3_column_text16 $::STMT 0]
      set ::text16 [encoding convertfrom unicode $::text16]
      set ::text16 [string range $::text16 0 end-1]
      set mf [expr [lindex [sqlite_malloc_stat] 2] <= 0 && !$::mallocFailed]
      expr {$mf==0 || $::text16 == ""}
    } {1}
    do_test ${testid}.4.3 {
      set ::text8_2 [sqlite3_column_text $::STMT 0]
      set mf [expr [lindex [sqlite_malloc_stat] 2] <= 0 && !$::mallocFailed]
      expr {$mf==0 || $::text8_2 == "" || ($::text16 == "" && $::text8 != "")}
    } {1}

    # Test for malloc() failures within _int(), _int64() and _real(). The only
    # way this can occur is if the string has to be translated from UTF-16 to
    # UTF-8 before being converted to a numeric value.
    do_test ${testid}.4.4.1 {
      set mf [lindex [sqlite_malloc_stat] 2]
      sqlite_malloc_fail 0
      sqlite3_column_text16 $::STMT 0
      sqlite_malloc_fail $mf
      sqlite3_column_int $::STMT 0
    } {0}
    do_test ${testid}.4.5 {
      set mf [lindex [sqlite_malloc_stat] 2]
      sqlite_malloc_fail 0
      sqlite3_column_text16 $::STMT 0
      sqlite_malloc_fail $mf
      sqlite3_column_int64 $::STMT 0
    } {0}

    do_test ${testid}.4.6 {
      set mf [lindex [sqlite_malloc_stat] 2]
      sqlite_malloc_fail 0
      sqlite3_column_text16 $::STMT 0
      sqlite_malloc_fail $mf
      sqlite3_column_double $::STMT 0
    } {0.0}

    set mallocFailedAfterStep [expr \
      [lindex [sqlite_malloc_stat] 2] <= 0 && !$::mallocFailed
    ]

    sqlite_malloc_fail 0
    # Test that if a malloc() failed the next call to sqlite3_step() returns
    # SQLITE_ERROR. If malloc() did not fail, it should return SQLITE_DONE.
    #
    do_test ${testid}.5 {
      sqlite3_step $::STMT
    } [expr {$mallocFailedAfterStep ? "SQLITE_ERROR" : "SQLITE_DONE"}]

    do_test ${testid}.6 {
      sqlite3_finalize $::STMT
    } [expr {$mallocFailedAfterStep ? "SQLITE_NOMEM" : "SQLITE_OK"}]

    if {$::mallocFailed == 0 && $mallocFailedAfterStep == 0} {
      sqlite_malloc_fail 0
      set go 0
    }

















  }
}

execsql {
  CREATE TABLE tbl(
    the_first_reasonably_long_column_name that_also_has_quite_a_lengthy_type
  );
  INSERT INTO tbl VALUES(
    'An extra long string. Far too long to be stored in NBFS bytes.'
  );
}

do_stmt_test 1 "SELECT * FROM tbl"

sqlite_malloc_fail 0
finish_test

Changes to test/select1.test.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
# 2001 September 15
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the SELECT statement.
#
# $Id: select1.test,v 1.43 2005/09/08 10:37:01 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Try to select on a non-existant table.
#
do_test select1-1.1 {













|







1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
# 2001 September 15
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the SELECT statement.
#
# $Id: select1.test,v 1.44 2005/12/09 14:25:12 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Try to select on a non-existant table.
#
do_test select1-1.1 {
794
795
796
797
798
799
800
801
802
803
    execsql2 {
      SELECT z.x FROM (
        SELECT a,b FROM t3 UNION SELECT a AS 'x', b AS 'y' FROM t4 ORDER BY a,b
      ) AS 'z' ORDER BY x;
    }
  } {x 1 x 3}
} ;# ifcapable compound


finish_test








<

794
795
796
797
798
799
800
801

802
    execsql2 {
      SELECT z.x FROM (
        SELECT a,b FROM t3 UNION SELECT a AS 'x', b AS 'y' FROM t4 ORDER BY a,b
      ) AS 'z' ORDER BY x;
    }
  } {x 1 x 3}
} ;# ifcapable compound


finish_test
Changes to test/tester.tcl.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
# 2001 September 15
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements some common TCL routines used for regression
# testing the SQLite library
#
# $Id: tester.tcl,v 1.52 2005/11/26 00:25:04 drh Exp $

# Make sure tclsqlite3 was compiled correctly.  Abort now with an
# error message if not.
#
if {[sqlite3 -tcl-uses-utf]} {
  if {"\u1234"=="u1234"} {
    puts stderr "***** BUILD PROBLEM *****"













|







1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
# 2001 September 15
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements some common TCL routines used for regression
# testing the SQLite library
#
# $Id: tester.tcl,v 1.53 2005/12/09 14:25:12 danielk1977 Exp $

# Make sure tclsqlite3 was compiled correctly.  Abort now with an
# error message if not.
#
if {[sqlite3 -tcl-uses-utf]} {
  if {"\u1234"=="u1234"} {
    puts stderr "***** BUILD PROBLEM *****"
79
80
81
82
83
84
85

86
87
88
89
90
91
92
set failList {}
set maxErr 1000

# Invoke the do_test procedure to run a single test 
#
proc do_test {name cmd expected} {
  global argv nErr nTest skip_test maxErr

  if {$skip_test} {
    set skip_test 0
    return
  }
  if {[llength $argv]==0} { 
    set go 1
  } else {







>







79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
set failList {}
set maxErr 1000

# Invoke the do_test procedure to run a single test 
#
proc do_test {name cmd expected} {
  global argv nErr nTest skip_test maxErr
  set ::sqlite_malloc_id $name
  if {$skip_test} {
    set skip_test 0
    return
  }
  if {[llength $argv]==0} { 
    set go 1
  } else {
135
136
137
138
139
140
141

142





143
144
145
146
147
148
149
#
proc finish_test {} {
  finalize_testing
}
proc finalize_testing {} {
  global nTest nErr nProb sqlite_open_file_count
  if {$nErr==0} memleak_check

  catch {db close}





  puts "$nErr errors out of $nTest tests"
  puts "Failures on these tests: $::failList"
  if {$nProb>0} {
    puts "$nProb probabilistic tests also failed, but this does"
    puts "not necessarily indicate a malfunction."
  }
  if 0 {







>

>
>
>
>
>







136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
#
proc finish_test {} {
  finalize_testing
}
proc finalize_testing {} {
  global nTest nErr nProb sqlite_open_file_count
  if {$nErr==0} memleak_check

  catch {db close}
  catch {db2 close}
  catch {db3 close}

pp_check_for_leaks

  puts "$nErr errors out of $nTest tests"
  puts "Failures on these tests: $::failList"
  if {$nProb>0} {
    puts "$nProb probabilistic tests also failed, but this does"
    puts "not necessarily indicate a malfunction."
  }
  if 0 {
418
419
420
421
422
423
424
425





















































426
427
428
    set t [open $to w]
    fconfigure $t -translation binary
    puts -nonewline $t [read $f [file size $from]]
    close $t
    close $f
  }
}






















































# If the library is compiled with the SQLITE_DEFAULT_AUTOVACUUM macro set
# to non-zero, then set the global variable $AUTOVACUUM to 1.
set AUTOVACUUM $sqlite_options(default_autovacuum)








>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>



425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
    set t [open $to w]
    fconfigure $t -translation binary
    puts -nonewline $t [read $f [file size $from]]
    close $t
    close $f
  }
}

# This command checks for outstanding calls to sqliteMalloc() from within
# the current thread. A list is returned with one entry for each outstanding
# malloc. Each list entry is itself a list of 5 items, as follows:
#
#     { <number-bytes> <file-name> <line-number> <test-case> <stack-dump> }
#
proc check_for_leaks {} {
  set ret [list]
  foreach alloc [sqlite_malloc_outstanding] {
    foreach {nBytes file iLine userstring backtrace} $alloc {}
    set stack [list]
    set skip 0

    # The first command in this block will probably fail on windows. This
    # means there will be no stack dump available.
    catch {
      set stuff [eval "exec addr2line -e ./testfixture -f $backtrace"]
      foreach {func line} $stuff {
        if {$func != "??" || $line != "??:0"} {
          regexp {.*/(.*)} $line dummy line
          lappend stack "${func}() $line"
        } else {
          if {[lindex $stack end] != "..."} {
            lappend stack "..."
          }
        }
      }
    }

    if {!$skip} {
      lappend ret [list $nBytes $file $iLine $userstring $stack]
    }
  }
  return $ret
}

# Pretty print a report based on the return value of [check_for_leaks] to
# stdout.
proc pp_check_for_leaks {} {
  set l [check_for_leaks]
  set n 0
  foreach leak $l {
    foreach {nBytes file iLine userstring stack} $leak {}
    puts "$nBytes bytes leaked at $file:$iLine ($userstring)"
    foreach frame $stack {
      puts "        $frame"
    }
    incr n $nBytes
  }
  puts "Memory leaked: $n bytes in [llength $l] allocations"
  puts ""
}

# If the library is compiled with the SQLITE_DEFAULT_AUTOVACUUM macro set
# to non-zero, then set the global variable $AUTOVACUUM to 1.
set AUTOVACUUM $sqlite_options(default_autovacuum)