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Overview
Comment:Add new interfaces sqlite3_bind_pointer(), sqlite3_result_pointer(), and sqlite3_value_pointer() used to safely move pointer values through SQL without exposing underlying memory address information.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 72de49f204277191f62601cce70d5013ec30b564a01063f1e841019c78ae6c77
User & Date: drh 2017-07-13 18:09:36
References
2017-07-21
07:56
Add new interfaces sqlite3_result_pointer(), and sqlite3_value_pointer() and use them to transfer the eponymous FTS3 column pointer to the snippet() and offsets() routines. This changes is a cherry-pick of [f0f49224] via [69906880cee] and is ultimately inspired by check-in [72de49f2]. check-in: 8201f4e1 user: drh tags: branch-3.18
07:45
Add new interfaces sqlite3_result_pointer(), and sqlite3_value_pointer() and use them to transfer the eponymous FTS3 column pointer to the snippet() and offsets() routines. This changes is a cherry-pick of [f0f49224] with version-specific edits. That check-in was inspired by check-in [72de49f2]. check-in: 69906880 user: drh tags: branch-3.9.2
04:08
Add new interfaces sqlite3_result_pointer(), and sqlite3_value_pointer() and use them to transfer the eponymous FTS3 column pointer to the snippet() and offsets() routines. This is a cherry-pick of [f0f49224] which was in turn inspired by [72de49f2]. Leaf check-in: 5a3022e0 user: drh tags: branch-3.8.10
03:23
Add new interfaces sqlite3_result_pointer(), and sqlite3_value_pointer() and use them to transfer the eponymous FTS3 column pointer to the snippet() and offsets() routines. This is a cherry-pick of [f0f492245e95], which is in turn inspired by check-in [72de49f2]. Leaf check-in: a66a5b39 user: drh tags: branch-3.8.6
03:09
Add new interfaces sqlite3_result_pointer(), and sqlite3_value_pointer() and use them to transfer the eponymous FTS3 column pointer to the snippet() and offsets() routines. This changes is inspired by check-in [72de49f2] but is new implementation, not a cherry-pick. Leaf check-in: f0f49224 user: drh tags: branch-3.7.11
Context
2018-12-19
16:03
Add interfaces sqlite3_bind_pointer(), sqlite3_result_pointer(), and sqlite3_value_pointer() used to safely move pointer values through SQL without exposing underlying memory address information. Cherrypick from commit [8201f4e1] on branch-3.18. check-in: 4cb67252 user: dan tags: branch-3.9
2017-07-15
10:44
Add new interfaces sqlite3_bind_pointer(), sqlite3_result_pointer(), and sqlite3_value_pointer() used to safely move pointer values through SQL without exposing underlying memory address information. Leaf check-in: d6a44b35 user: drh tags: branch-3.17
2017-07-13
19:11
Update header comments on the carray() and remember() extensions to bring out the fact that the pointer arguments must be bound using sqlite3_bind_pointer(). check-in: 55f53965 user: drh tags: trunk
18:09
Add new interfaces sqlite3_bind_pointer(), sqlite3_result_pointer(), and sqlite3_value_pointer() used to safely move pointer values through SQL without exposing underlying memory address information. check-in: 72de49f2 user: drh tags: trunk
17:56
Fix an incorrect type signature for the loadable extension pointer for sqlite3_result_pointer(). Closed-Leaf check-in: 0bd7875b user: drh tags: bind-pointer
2017-07-12
20:43
Smaller and faster implementation for vdbeFreeOpArray() and freeP4(). check-in: 0c805935 user: drh tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to ext/fts3/fts3.c.

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  /* The column value supplied by SQLite must be in range. */
  assert( iCol>=0 && iCol<=p->nColumn+2 );

  switch( iCol-p->nColumn ){
    case 0:
      /* The special 'table-name' column */
      sqlite3_result_blob(pCtx, &pCsr, sizeof(Fts3Cursor*), SQLITE_TRANSIENT);
      sqlite3_result_subtype(pCtx, SQLITE_BLOB);
      break;

    case 1:
      /* The docid column */
      sqlite3_result_int64(pCtx, pCsr->iPrevId);
      break;

................................................................................
*/
static int fts3FunctionArg(
  sqlite3_context *pContext,      /* SQL function call context */
  const char *zFunc,              /* Function name */
  sqlite3_value *pVal,            /* argv[0] passed to function */
  Fts3Cursor **ppCsr              /* OUT: Store cursor handle here */
){
  int rc = SQLITE_OK;
  if( sqlite3_value_subtype(pVal)==SQLITE_BLOB ){
    *ppCsr = *(Fts3Cursor**)sqlite3_value_blob(pVal);

  }else{
    char *zErr = sqlite3_mprintf("illegal first argument to %s", zFunc);
    sqlite3_result_error(pContext, zErr, -1);
    sqlite3_free(zErr);
    rc = SQLITE_ERROR;
  }
  return rc;







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  /* The column value supplied by SQLite must be in range. */
  assert( iCol>=0 && iCol<=p->nColumn+2 );

  switch( iCol-p->nColumn ){
    case 0:
      /* The special 'table-name' column */

      sqlite3_result_pointer(pCtx, pCsr);
      break;

    case 1:
      /* The docid column */
      sqlite3_result_int64(pCtx, pCsr->iPrevId);
      break;

................................................................................
*/
static int fts3FunctionArg(
  sqlite3_context *pContext,      /* SQL function call context */
  const char *zFunc,              /* Function name */
  sqlite3_value *pVal,            /* argv[0] passed to function */
  Fts3Cursor **ppCsr              /* OUT: Store cursor handle here */
){
  int rc;
  *ppCsr = (Fts3Cursor*)sqlite3_value_pointer(pVal);
  if( (*ppCsr)!=0 ){
    rc = SQLITE_OK;
  }else{
    char *zErr = sqlite3_mprintf("illegal first argument to %s", zFunc);
    sqlite3_result_error(pContext, zErr, -1);
    sqlite3_free(zErr);
    rc = SQLITE_ERROR;
  }
  return rc;

Changes to ext/misc/carray.c.

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** serve as the underlying representation of a cursor that scans
** over rows of the result
*/
typedef struct carray_cursor carray_cursor;
struct carray_cursor {
  sqlite3_vtab_cursor base;  /* Base class - must be first */
  sqlite3_int64 iRowid;      /* The rowid */
  sqlite3_int64 iPtr;        /* Pointer to array of values */
  sqlite3_int64 iCnt;        /* Number of integers in the array */
  unsigned char eType;       /* One of the CARRAY_type values */
};

/*
** The carrayConnect() method is invoked to create a new
** carray_vtab that describes the carray virtual table.
................................................................................
  sqlite3_vtab_cursor *cur,   /* The cursor */
  sqlite3_context *ctx,       /* First argument to sqlite3_result_...() */
  int i                       /* Which column to return */
){
  carray_cursor *pCur = (carray_cursor*)cur;
  sqlite3_int64 x = 0;
  switch( i ){
    case CARRAY_COLUMN_POINTER:   x = pCur->iPtr;   break;
    case CARRAY_COLUMN_COUNT:     x = pCur->iCnt;   break;
    case CARRAY_COLUMN_CTYPE: {
      sqlite3_result_text(ctx, azType[pCur->eType], -1, SQLITE_STATIC);
      return SQLITE_OK;
    }
    default: {
      switch( pCur->eType ){
        case CARRAY_INT32: {
          int *p = (int*)pCur->iPtr;
          sqlite3_result_int(ctx, p[pCur->iRowid-1]);
          return SQLITE_OK;
        }
        case CARRAY_INT64: {
          sqlite3_int64 *p = (sqlite3_int64*)pCur->iPtr;
          sqlite3_result_int64(ctx, p[pCur->iRowid-1]);
          return SQLITE_OK;
        }
        case CARRAY_DOUBLE: {
          double *p = (double*)pCur->iPtr;
          sqlite3_result_double(ctx, p[pCur->iRowid-1]);
          return SQLITE_OK;
        }
        case CARRAY_TEXT: {
          const char **p = (const char**)pCur->iPtr;
          sqlite3_result_text(ctx, p[pCur->iRowid-1], -1, SQLITE_TRANSIENT);
          return SQLITE_OK;
        }
      }
    }
  }
  sqlite3_result_int64(ctx, x);
................................................................................
static int carrayFilter(
  sqlite3_vtab_cursor *pVtabCursor, 
  int idxNum, const char *idxStr,
  int argc, sqlite3_value **argv
){
  carray_cursor *pCur = (carray_cursor *)pVtabCursor;
  if( idxNum ){
    pCur->iPtr = sqlite3_value_int64(argv[0]);
    pCur->iCnt = sqlite3_value_int64(argv[1]);
    if( idxNum<3 ){
      pCur->eType = CARRAY_INT32;
    }else{
      unsigned char i;
      const char *zType = (const char*)sqlite3_value_text(argv[2]);
      for(i=0; i<sizeof(azType)/sizeof(azType[0]); i++){
        if( sqlite3_stricmp(zType, azType[i])==0 ) break;
................................................................................
          "unknown datatype: %Q", zType);
        return SQLITE_ERROR;
      }else{
        pCur->eType = i;
      }
    }
  }else{
    pCur->iPtr = 0;
    pCur->iCnt = 0;
  }
  pCur->iRowid = 1;
  return SQLITE_OK;
}

/*
................................................................................
  0,                         /* xSync */
  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
};





























#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifdef _WIN32
__declspec(dllexport)
#endif
int sqlite3_carray_init(
  sqlite3 *db, 
................................................................................
  char **pzErrMsg, 
  const sqlite3_api_routines *pApi
){
  int rc = SQLITE_OK;
  SQLITE_EXTENSION_INIT2(pApi);
#ifndef SQLITE_OMIT_VIRTUALTABLE
  rc = sqlite3_create_module(db, "carray", &carrayModule, 0);





#endif

  return rc;
}







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** serve as the underlying representation of a cursor that scans
** over rows of the result
*/
typedef struct carray_cursor carray_cursor;
struct carray_cursor {
  sqlite3_vtab_cursor base;  /* Base class - must be first */
  sqlite3_int64 iRowid;      /* The rowid */
  void *pPtr;                /* Pointer to the array of values */
  sqlite3_int64 iCnt;        /* Number of integers in the array */
  unsigned char eType;       /* One of the CARRAY_type values */
};

/*
** The carrayConnect() method is invoked to create a new
** carray_vtab that describes the carray virtual table.
................................................................................
  sqlite3_vtab_cursor *cur,   /* The cursor */
  sqlite3_context *ctx,       /* First argument to sqlite3_result_...() */
  int i                       /* Which column to return */
){
  carray_cursor *pCur = (carray_cursor*)cur;
  sqlite3_int64 x = 0;
  switch( i ){
    case CARRAY_COLUMN_POINTER:   return SQLITE_OK;
    case CARRAY_COLUMN_COUNT:     x = pCur->iCnt;   break;
    case CARRAY_COLUMN_CTYPE: {
      sqlite3_result_text(ctx, azType[pCur->eType], -1, SQLITE_STATIC);
      return SQLITE_OK;
    }
    default: {
      switch( pCur->eType ){
        case CARRAY_INT32: {
          int *p = (int*)pCur->pPtr;
          sqlite3_result_int(ctx, p[pCur->iRowid-1]);
          return SQLITE_OK;
        }
        case CARRAY_INT64: {
          sqlite3_int64 *p = (sqlite3_int64*)pCur->pPtr;
          sqlite3_result_int64(ctx, p[pCur->iRowid-1]);
          return SQLITE_OK;
        }
        case CARRAY_DOUBLE: {
          double *p = (double*)pCur->pPtr;
          sqlite3_result_double(ctx, p[pCur->iRowid-1]);
          return SQLITE_OK;
        }
        case CARRAY_TEXT: {
          const char **p = (const char**)pCur->pPtr;
          sqlite3_result_text(ctx, p[pCur->iRowid-1], -1, SQLITE_TRANSIENT);
          return SQLITE_OK;
        }
      }
    }
  }
  sqlite3_result_int64(ctx, x);
................................................................................
static int carrayFilter(
  sqlite3_vtab_cursor *pVtabCursor, 
  int idxNum, const char *idxStr,
  int argc, sqlite3_value **argv
){
  carray_cursor *pCur = (carray_cursor *)pVtabCursor;
  if( idxNum ){
    pCur->pPtr = sqlite3_value_pointer(argv[0]);
    pCur->iCnt = pCur->pPtr ? sqlite3_value_int64(argv[1]) : 0;
    if( idxNum<3 ){
      pCur->eType = CARRAY_INT32;
    }else{
      unsigned char i;
      const char *zType = (const char*)sqlite3_value_text(argv[2]);
      for(i=0; i<sizeof(azType)/sizeof(azType[0]); i++){
        if( sqlite3_stricmp(zType, azType[i])==0 ) break;
................................................................................
          "unknown datatype: %Q", zType);
        return SQLITE_ERROR;
      }else{
        pCur->eType = i;
      }
    }
  }else{
    pCur->pPtr = 0;
    pCur->iCnt = 0;
  }
  pCur->iRowid = 1;
  return SQLITE_OK;
}

/*
................................................................................
  0,                         /* xSync */
  0,                         /* xCommit */
  0,                         /* xRollback */
  0,                         /* xFindMethod */
  0,                         /* xRename */
};

/*
** For testing purpose in the TCL test harness, we need a method for
** setting the pointer value.  The inttoptr(X) SQL function accomplishes
** this.  Tcl script will bind an integer to X and the inttoptr() SQL
** function will use sqlite3_result_pointer() to convert that integer into
** a pointer.
**
** This is for testing on TCL only.
*/
#ifdef SQLITE_TEST
static void inttoptrFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  void *p;
  sqlite3_int64 i64;
  i64 = sqlite3_value_int64(argv[0]);
  if( sizeof(i64)==sizeof(p) ){
    memcpy(&p, &i64, sizeof(p));
  }else{
    int i32 = i64 & 0xffffffff;
    memcpy(&p, &i32, sizeof(p));
  }
  sqlite3_result_pointer(context, p);
}
#endif /* SQLITE_TEST */

#endif /* SQLITE_OMIT_VIRTUALTABLE */

#ifdef _WIN32
__declspec(dllexport)
#endif
int sqlite3_carray_init(
  sqlite3 *db, 
................................................................................
  char **pzErrMsg, 
  const sqlite3_api_routines *pApi
){
  int rc = SQLITE_OK;
  SQLITE_EXTENSION_INIT2(pApi);
#ifndef SQLITE_OMIT_VIRTUALTABLE
  rc = sqlite3_create_module(db, "carray", &carrayModule, 0);
#ifdef SQLITE_TEST
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_function(db, "inttoptr", 1, SQLITE_UTF8, 0,
                                 inttoptrFunc, 0, 0);
  }
#endif /* SQLITE_TEST */
#endif /* SQLITE_OMIT_VIRTUALTABLE */
  return rc;
}

Changes to ext/misc/remember.c.

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*/
static void rememberFunc(
  sqlite3_context *pCtx,
  int argc,
  sqlite3_value **argv
){
  sqlite3_int64 v;
  sqlite3_int64 ptr;
  assert( argc==2 );
  v = sqlite3_value_int64(argv[0]);
  ptr = sqlite3_value_int64(argv[1]);
  *((sqlite3_int64*)ptr) = v;
  sqlite3_result_int64(pCtx, v);
}

#ifdef _WIN32
__declspec(dllexport)
#endif
int sqlite3_remember_init(







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*/
static void rememberFunc(
  sqlite3_context *pCtx,
  int argc,
  sqlite3_value **argv
){
  sqlite3_int64 v;
  sqlite3_int64 *ptr;
  assert( argc==2 );
  v = sqlite3_value_int64(argv[0]);
  ptr = sqlite3_value_pointer(argv[1]);
  if( ptr ) *ptr = v;
  sqlite3_result_int64(pCtx, v);
}

#ifdef _WIN32
__declspec(dllexport)
#endif
int sqlite3_remember_init(

Changes to src/loadext.c.

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  /* Version 3.14.0 and later */
  sqlite3_trace_v2,
  sqlite3_expanded_sql,
  /* Version 3.18.0 and later */
  sqlite3_set_last_insert_rowid,
  /* Version 3.20.0 and later */
  sqlite3_prepare_v3,
  sqlite3_prepare16_v3



};

/*
** Attempt to load an SQLite extension library contained in the file
** zFile.  The entry point is zProc.  zProc may be 0 in which case a
** default entry point name (sqlite3_extension_init) is used.  Use
** of the default name is recommended.







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  /* Version 3.14.0 and later */
  sqlite3_trace_v2,
  sqlite3_expanded_sql,
  /* Version 3.18.0 and later */
  sqlite3_set_last_insert_rowid,
  /* Version 3.20.0 and later */
  sqlite3_prepare_v3,
  sqlite3_prepare16_v3,
  sqlite3_bind_pointer,
  sqlite3_result_pointer,
  sqlite3_value_pointer
};

/*
** Attempt to load an SQLite extension library contained in the file
** zFile.  The entry point is zProc.  zProc may be 0 in which case a
** default entry point name (sqlite3_extension_init) is used.  Use
** of the default name is recommended.

Changes to src/sqlite.h.in.

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** ^The sqlite3_bind_zeroblob() routine binds a BLOB of length N that
** is filled with zeroes.  ^A zeroblob uses a fixed amount of memory
** (just an integer to hold its size) while it is being processed.
** Zeroblobs are intended to serve as placeholders for BLOBs whose
** content is later written using
** [sqlite3_blob_open | incremental BLOB I/O] routines.
** ^A negative value for the zeroblob results in a zero-length BLOB.









**
** ^If any of the sqlite3_bind_*() routines are called with a NULL pointer
** for the [prepared statement] or with a prepared statement for which
** [sqlite3_step()] has been called more recently than [sqlite3_reset()],
** then the call will return [SQLITE_MISUSE].  If any sqlite3_bind_()
** routine is passed a [prepared statement] that has been finalized, the
** result is undefined and probably harmful.
................................................................................
int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
int sqlite3_bind_null(sqlite3_stmt*, int);
int sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*));
int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
                         void(*)(void*), unsigned char encoding);
int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);

int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
int sqlite3_bind_zeroblob64(sqlite3_stmt*, int, sqlite3_uint64);

/*
** CAPI3REF: Number Of SQL Parameters
** METHOD: sqlite3_stmt
**
................................................................................
** except that these routines take a single [protected sqlite3_value] object
** pointer instead of a [sqlite3_stmt*] pointer and an integer column number.
**
** ^The sqlite3_value_text16() interface extracts a UTF-16 string
** in the native byte-order of the host machine.  ^The
** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces
** extract UTF-16 strings as big-endian and little-endian respectively.





**
** ^(The sqlite3_value_type(V) interface returns the
** [SQLITE_INTEGER | datatype code] for the initial datatype of the
** [sqlite3_value] object V. The returned value is one of [SQLITE_INTEGER],
** [SQLITE_FLOAT], [SQLITE_TEXT], [SQLITE_BLOB], or [SQLITE_NULL].)^
** Other interfaces might change the datatype for an sqlite3_value object.
** For example, if the datatype is initially SQLITE_INTEGER and
................................................................................
double sqlite3_value_double(sqlite3_value*);
int sqlite3_value_int(sqlite3_value*);
sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
const unsigned char *sqlite3_value_text(sqlite3_value*);
const void *sqlite3_value_text16(sqlite3_value*);
const void *sqlite3_value_text16le(sqlite3_value*);
const void *sqlite3_value_text16be(sqlite3_value*);

int sqlite3_value_bytes(sqlite3_value*);
int sqlite3_value_bytes16(sqlite3_value*);
int sqlite3_value_type(sqlite3_value*);
int sqlite3_value_numeric_type(sqlite3_value*);

/*
** CAPI3REF: Finding The Subtype Of SQL Values
................................................................................
** METHOD: sqlite3_value
**
** The sqlite3_value_subtype(V) function returns the subtype for
** an [application-defined SQL function] argument V.  The subtype
** information can be used to pass a limited amount of context from
** one SQL function to another.  Use the [sqlite3_result_subtype()]
** routine to set the subtype for the return value of an SQL function.
**
** SQLite makes no use of subtype itself.  It merely passes the subtype
** from the result of one [application-defined SQL function] into the
** input of another.
*/
unsigned int sqlite3_value_subtype(sqlite3_value*);

/*
** CAPI3REF: Copy And Free SQL Values
** METHOD: sqlite3_value
**
................................................................................
** [unprotected sqlite3_value] object specified by the 2nd parameter.  ^The
** sqlite3_result_value() interface makes a copy of the [sqlite3_value]
** so that the [sqlite3_value] specified in the parameter may change or
** be deallocated after sqlite3_result_value() returns without harm.
** ^A [protected sqlite3_value] object may always be used where an
** [unprotected sqlite3_value] object is required, so either
** kind of [sqlite3_value] object can be used with this interface.








**
** If these routines are called from within the different thread
** than the one containing the application-defined function that received
** the [sqlite3_context] pointer, the results are undefined.
*/
void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
void sqlite3_result_blob64(sqlite3_context*,const void*,
................................................................................
void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
void sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64,
                           void(*)(void*), unsigned char encoding);
void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
void sqlite3_result_value(sqlite3_context*, sqlite3_value*);

void sqlite3_result_zeroblob(sqlite3_context*, int n);
int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n);


/*
** CAPI3REF: Setting The Subtype Of An SQL Function
** METHOD: sqlite3_context







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** ^The sqlite3_bind_zeroblob() routine binds a BLOB of length N that
** is filled with zeroes.  ^A zeroblob uses a fixed amount of memory
** (just an integer to hold its size) while it is being processed.
** Zeroblobs are intended to serve as placeholders for BLOBs whose
** content is later written using
** [sqlite3_blob_open | incremental BLOB I/O] routines.
** ^A negative value for the zeroblob results in a zero-length BLOB.
**
** ^The sqlite3_bind_pointer(S,I,P) routine causes the I-th parameter in
** [prepared statement] S to have an SQL value of NULL, but to also be
** associated with the pointer P.
** ^The sqlite3_bind_pointer() routine can be used to pass
** host-language pointers into [application-defined SQL functions].
** ^A parameter that is initialized using [sqlite3_bind_pointer()] appears
** to be an ordinary SQL NULL value to everything other than
** [sqlite3_value_pointer()].
**
** ^If any of the sqlite3_bind_*() routines are called with a NULL pointer
** for the [prepared statement] or with a prepared statement for which
** [sqlite3_step()] has been called more recently than [sqlite3_reset()],
** then the call will return [SQLITE_MISUSE].  If any sqlite3_bind_()
** routine is passed a [prepared statement] that has been finalized, the
** result is undefined and probably harmful.
................................................................................
int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
int sqlite3_bind_null(sqlite3_stmt*, int);
int sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*));
int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
                         void(*)(void*), unsigned char encoding);
int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
int sqlite3_bind_pointer(sqlite3_stmt*, int, void*);
int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
int sqlite3_bind_zeroblob64(sqlite3_stmt*, int, sqlite3_uint64);

/*
** CAPI3REF: Number Of SQL Parameters
** METHOD: sqlite3_stmt
**
................................................................................
** except that these routines take a single [protected sqlite3_value] object
** pointer instead of a [sqlite3_stmt*] pointer and an integer column number.
**
** ^The sqlite3_value_text16() interface extracts a UTF-16 string
** in the native byte-order of the host machine.  ^The
** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces
** extract UTF-16 strings as big-endian and little-endian respectively.
**
** ^If [sqlite3_value] object V was initialized 
** using [sqlite3_bind_pointer(S,I,P)] or [sqlite3_result_pointer(C,P)], then
** sqlite3_value_pointer(V) will return the pointer P.  Otherwise,
** sqlite3_value_pointer(V) returns a NULL.
**
** ^(The sqlite3_value_type(V) interface returns the
** [SQLITE_INTEGER | datatype code] for the initial datatype of the
** [sqlite3_value] object V. The returned value is one of [SQLITE_INTEGER],
** [SQLITE_FLOAT], [SQLITE_TEXT], [SQLITE_BLOB], or [SQLITE_NULL].)^
** Other interfaces might change the datatype for an sqlite3_value object.
** For example, if the datatype is initially SQLITE_INTEGER and
................................................................................
double sqlite3_value_double(sqlite3_value*);
int sqlite3_value_int(sqlite3_value*);
sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
const unsigned char *sqlite3_value_text(sqlite3_value*);
const void *sqlite3_value_text16(sqlite3_value*);
const void *sqlite3_value_text16le(sqlite3_value*);
const void *sqlite3_value_text16be(sqlite3_value*);
void *sqlite3_value_pointer(sqlite3_value*);
int sqlite3_value_bytes(sqlite3_value*);
int sqlite3_value_bytes16(sqlite3_value*);
int sqlite3_value_type(sqlite3_value*);
int sqlite3_value_numeric_type(sqlite3_value*);

/*
** CAPI3REF: Finding The Subtype Of SQL Values
................................................................................
** METHOD: sqlite3_value
**
** The sqlite3_value_subtype(V) function returns the subtype for
** an [application-defined SQL function] argument V.  The subtype
** information can be used to pass a limited amount of context from
** one SQL function to another.  Use the [sqlite3_result_subtype()]
** routine to set the subtype for the return value of an SQL function.




*/
unsigned int sqlite3_value_subtype(sqlite3_value*);

/*
** CAPI3REF: Copy And Free SQL Values
** METHOD: sqlite3_value
**
................................................................................
** [unprotected sqlite3_value] object specified by the 2nd parameter.  ^The
** sqlite3_result_value() interface makes a copy of the [sqlite3_value]
** so that the [sqlite3_value] specified in the parameter may change or
** be deallocated after sqlite3_result_value() returns without harm.
** ^A [protected sqlite3_value] object may always be used where an
** [unprotected sqlite3_value] object is required, so either
** kind of [sqlite3_value] object can be used with this interface.
**
** ^The sqlite3_result_pointer(C,P) interface sets the result to an
** SQL NULL value, just like [sqlite3_result_null(C)], except that it
** also associates the host-language pointer P with that NULL value such
** that the pointer can be retrieved within an
** [application-defined SQL function] using [sqlite3_value_pointer()].
** This mechanism can be used to pass non-SQL values between
** application-defined functions.
**
** If these routines are called from within the different thread
** than the one containing the application-defined function that received
** the [sqlite3_context] pointer, the results are undefined.
*/
void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
void sqlite3_result_blob64(sqlite3_context*,const void*,
................................................................................
void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
void sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64,
                           void(*)(void*), unsigned char encoding);
void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
void sqlite3_result_value(sqlite3_context*, sqlite3_value*);
void sqlite3_result_pointer(sqlite3_context*, void*);
void sqlite3_result_zeroblob(sqlite3_context*, int n);
int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n);


/*
** CAPI3REF: Setting The Subtype Of An SQL Function
** METHOD: sqlite3_context

Changes to src/sqlite3ext.h.

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  /* Version 3.18.0 and later */
  void (*set_last_insert_rowid)(sqlite3*,sqlite3_int64);
  /* Version 3.20.0 and later */
  int (*prepare_v3)(sqlite3*,const char*,int,unsigned int,
                    sqlite3_stmt**,const char**);
  int (*prepare16_v3)(sqlite3*,const void*,int,unsigned int,
                      sqlite3_stmt**,const void**);



};

/*
** This is the function signature used for all extension entry points.  It
** is also defined in the file "loadext.c".
*/
typedef int (*sqlite3_loadext_entry)(
................................................................................
#define sqlite3_trace_v2               sqlite3_api->trace_v2
#define sqlite3_expanded_sql           sqlite3_api->expanded_sql
/* Version 3.18.0 and later */
#define sqlite3_set_last_insert_rowid  sqlite3_api->set_last_insert_rowid
/* Version 3.20.0 and later */
#define sqlite3_prepare_v3             sqlite3_api->prepare_v3
#define sqlite3_prepare16_v3           sqlite3_api->prepare16_v3



#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */

#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
  /* This case when the file really is being compiled as a loadable 
  ** extension */
# define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api=0;
# define SQLITE_EXTENSION_INIT2(v)  sqlite3_api=v;







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  /* Version 3.18.0 and later */
  void (*set_last_insert_rowid)(sqlite3*,sqlite3_int64);
  /* Version 3.20.0 and later */
  int (*prepare_v3)(sqlite3*,const char*,int,unsigned int,
                    sqlite3_stmt**,const char**);
  int (*prepare16_v3)(sqlite3*,const void*,int,unsigned int,
                      sqlite3_stmt**,const void**);
  int (*bind_pointer)(sqlite3_stmt*,int,void*);
  void (*result_pointer)(sqlite3_context*,void*);
  void *(*value_pointer)(sqlite3_value*);
};

/*
** This is the function signature used for all extension entry points.  It
** is also defined in the file "loadext.c".
*/
typedef int (*sqlite3_loadext_entry)(
................................................................................
#define sqlite3_trace_v2               sqlite3_api->trace_v2
#define sqlite3_expanded_sql           sqlite3_api->expanded_sql
/* Version 3.18.0 and later */
#define sqlite3_set_last_insert_rowid  sqlite3_api->set_last_insert_rowid
/* Version 3.20.0 and later */
#define sqlite3_prepare_v3             sqlite3_api->prepare_v3
#define sqlite3_prepare16_v3           sqlite3_api->prepare16_v3
#define sqlite3_bind_pointer           sqlite3_api->bind_pointer
#define sqlite3_result_pointer         sqlite3_api->result_pointer
#define sqlite3_value_pointer          sqlite3_api->value_pointer
#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */

#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
  /* This case when the file really is being compiled as a loadable 
  ** extension */
# define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api=0;
# define SQLITE_EXTENSION_INIT2(v)  sqlite3_api=v;

Changes to src/vdbeInt.h.

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** integer etc.) of the same value.
*/
struct sqlite3_value {
  union MemValue {
    double r;           /* Real value used when MEM_Real is set in flags */
    i64 i;              /* Integer value used when MEM_Int is set in flags */
    int nZero;          /* Used when bit MEM_Zero is set in flags */

    FuncDef *pDef;      /* Used only when flags==MEM_Agg */
    RowSet *pRowSet;    /* Used only when flags==MEM_RowSet */
    VdbeFrame *pFrame;  /* Used when flags==MEM_Frame */
  } u;
  u16 flags;          /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */
  u8  enc;            /* SQLITE_UTF8, SQLITE_UTF16BE, SQLITE_UTF16LE */
  u8  eSubtype;       /* Subtype for this value */
................................................................................
int sqlite3VdbeMemSetStr(Mem*, const char*, int, u8, void(*)(void*));
void sqlite3VdbeMemSetInt64(Mem*, i64);
#ifdef SQLITE_OMIT_FLOATING_POINT
# define sqlite3VdbeMemSetDouble sqlite3VdbeMemSetInt64
#else
  void sqlite3VdbeMemSetDouble(Mem*, double);
#endif

void sqlite3VdbeMemInit(Mem*,sqlite3*,u16);
void sqlite3VdbeMemSetNull(Mem*);
void sqlite3VdbeMemSetZeroBlob(Mem*,int);
void sqlite3VdbeMemSetRowSet(Mem*);
int sqlite3VdbeMemMakeWriteable(Mem*);
int sqlite3VdbeMemStringify(Mem*, u8, u8);
i64 sqlite3VdbeIntValue(Mem*);







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** integer etc.) of the same value.
*/
struct sqlite3_value {
  union MemValue {
    double r;           /* Real value used when MEM_Real is set in flags */
    i64 i;              /* Integer value used when MEM_Int is set in flags */
    int nZero;          /* Used when bit MEM_Zero is set in flags */
    void *pPtr;         /* Pointer when flags=MEM_NULL and eSubtype='p' */
    FuncDef *pDef;      /* Used only when flags==MEM_Agg */
    RowSet *pRowSet;    /* Used only when flags==MEM_RowSet */
    VdbeFrame *pFrame;  /* Used when flags==MEM_Frame */
  } u;
  u16 flags;          /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */
  u8  enc;            /* SQLITE_UTF8, SQLITE_UTF16BE, SQLITE_UTF16LE */
  u8  eSubtype;       /* Subtype for this value */
................................................................................
int sqlite3VdbeMemSetStr(Mem*, const char*, int, u8, void(*)(void*));
void sqlite3VdbeMemSetInt64(Mem*, i64);
#ifdef SQLITE_OMIT_FLOATING_POINT
# define sqlite3VdbeMemSetDouble sqlite3VdbeMemSetInt64
#else
  void sqlite3VdbeMemSetDouble(Mem*, double);
#endif
void sqlite3VdbeMemSetPointer(Mem*, void*);
void sqlite3VdbeMemInit(Mem*,sqlite3*,u16);
void sqlite3VdbeMemSetNull(Mem*);
void sqlite3VdbeMemSetZeroBlob(Mem*,int);
void sqlite3VdbeMemSetRowSet(Mem*);
int sqlite3VdbeMemMakeWriteable(Mem*);
int sqlite3VdbeMemStringify(Mem*, u8, u8);
i64 sqlite3VdbeIntValue(Mem*);

Changes to src/vdbeapi.c.

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}
sqlite_int64 sqlite3_value_int64(sqlite3_value *pVal){
  return sqlite3VdbeIntValue((Mem*)pVal);
}
unsigned int sqlite3_value_subtype(sqlite3_value *pVal){
  Mem *pMem = (Mem*)pVal;
  return ((pMem->flags & MEM_Subtype) ? pMem->eSubtype : 0);








}
const unsigned char *sqlite3_value_text(sqlite3_value *pVal){
  return (const unsigned char *)sqlite3ValueText(pVal, SQLITE_UTF8);
}
#ifndef SQLITE_OMIT_UTF16
const void *sqlite3_value_text16(sqlite3_value* pVal){
  return sqlite3ValueText(pVal, SQLITE_UTF16NATIVE);
................................................................................
void sqlite3_result_int64(sqlite3_context *pCtx, i64 iVal){
  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  sqlite3VdbeMemSetInt64(pCtx->pOut, iVal);
}
void sqlite3_result_null(sqlite3_context *pCtx){
  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  sqlite3VdbeMemSetNull(pCtx->pOut);






}
void sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubtype){
  Mem *pOut = pCtx->pOut;
  assert( sqlite3_mutex_held(pOut->db->mutex) );
  pOut->eSubtype = eSubtype & 0xff;
  pOut->flags |= MEM_Subtype;
}
................................................................................
  int rc;
  Vdbe *p = (Vdbe*)pStmt;
  rc = vdbeUnbind(p, i);
  if( rc==SQLITE_OK ){
    sqlite3_mutex_leave(p->db->mutex);
  }
  return rc;










}
int sqlite3_bind_text( 
  sqlite3_stmt *pStmt, 
  int i, 
  const char *zData, 
  int nData, 
  void (*xDel)(void*)







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}
sqlite_int64 sqlite3_value_int64(sqlite3_value *pVal){
  return sqlite3VdbeIntValue((Mem*)pVal);
}
unsigned int sqlite3_value_subtype(sqlite3_value *pVal){
  Mem *pMem = (Mem*)pVal;
  return ((pMem->flags & MEM_Subtype) ? pMem->eSubtype : 0);
}
void *sqlite3_value_pointer(sqlite3_value *pVal){
  Mem *p = (Mem*)pVal;
  if( (p->flags & MEM_TypeMask)==(MEM_Null|MEM_Subtype) && p->eSubtype=='p' ){
    return p->u.pPtr;
  }else{
    return 0;
  }
}
const unsigned char *sqlite3_value_text(sqlite3_value *pVal){
  return (const unsigned char *)sqlite3ValueText(pVal, SQLITE_UTF8);
}
#ifndef SQLITE_OMIT_UTF16
const void *sqlite3_value_text16(sqlite3_value* pVal){
  return sqlite3ValueText(pVal, SQLITE_UTF16NATIVE);
................................................................................
void sqlite3_result_int64(sqlite3_context *pCtx, i64 iVal){
  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  sqlite3VdbeMemSetInt64(pCtx->pOut, iVal);
}
void sqlite3_result_null(sqlite3_context *pCtx){
  assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
  sqlite3VdbeMemSetNull(pCtx->pOut);
}
void sqlite3_result_pointer(sqlite3_context *pCtx, void *pPtr){
  Mem *pOut = pCtx->pOut;
  assert( sqlite3_mutex_held(pOut->db->mutex) );
  sqlite3VdbeMemSetNull(pOut);
  sqlite3VdbeMemSetPointer(pOut, pPtr);
}
void sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubtype){
  Mem *pOut = pCtx->pOut;
  assert( sqlite3_mutex_held(pOut->db->mutex) );
  pOut->eSubtype = eSubtype & 0xff;
  pOut->flags |= MEM_Subtype;
}
................................................................................
  int rc;
  Vdbe *p = (Vdbe*)pStmt;
  rc = vdbeUnbind(p, i);
  if( rc==SQLITE_OK ){
    sqlite3_mutex_leave(p->db->mutex);
  }
  return rc;
}
int sqlite3_bind_pointer(sqlite3_stmt *pStmt, int i, void *pPtr){
  int rc;
  Vdbe *p = (Vdbe*)pStmt;
  rc = vdbeUnbind(p, i);
  if( rc==SQLITE_OK ){
    sqlite3VdbeMemSetPointer(&p->aVar[i-1], pPtr);
    sqlite3_mutex_leave(p->db->mutex);
  }
  return rc;
}
int sqlite3_bind_text( 
  sqlite3_stmt *pStmt, 
  int i, 
  const char *zData, 
  int nData, 
  void (*xDel)(void*)

Changes to src/vdbemem.c.

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  if( VdbeMemDynamic(pMem) ){
    vdbeReleaseAndSetInt64(pMem, val);
  }else{
    pMem->u.i = val;
    pMem->flags = MEM_Int;
  }
}












#ifndef SQLITE_OMIT_FLOATING_POINT
/*
** Delete any previous value and set the value stored in *pMem to val,
** manifest type REAL.
*/
void sqlite3VdbeMemSetDouble(Mem *pMem, double val){







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  if( VdbeMemDynamic(pMem) ){
    vdbeReleaseAndSetInt64(pMem, val);
  }else{
    pMem->u.i = val;
    pMem->flags = MEM_Int;
  }
}

/*
** Set the value stored in *pMem should already be a NULL.
** Also store a pointer to go with it.
*/
void sqlite3VdbeMemSetPointer(Mem *pMem, void *pPtr){
  assert( pMem->flags==MEM_Null );
  pMem->flags = MEM_Null|MEM_Subtype;
  pMem->u.pPtr = pPtr;
  pMem->eSubtype = 'p';
}

#ifndef SQLITE_OMIT_FLOATING_POINT
/*
** Delete any previous value and set the value stored in *pMem to val,
** manifest type REAL.
*/
void sqlite3VdbeMemSetDouble(Mem *pMem, double val){

Changes to test/tabfunc01.test.

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  SELECT b FROM t600 WHERE a IN generate_series(2,52,10);
} {(002) (012) (022) (032) (042) (052)}


do_test tabfunc01-700 {
  set PTR1 [intarray_addr 5 7 13 17 23]
  db eval {
    SELECT b FROM t600, carray($PTR1,5) WHERE a=value;
  }
} {(005) (007) (013) (017) (023)}
do_test tabfunc01-701 {
  db eval {
    SELECT b FROM t600 WHERE a IN carray($PTR1,5,'int32');
  }
} {(005) (007) (013) (017) (023)}
do_test tabfunc01-702 {
  db eval {
    SELECT b FROM t600 WHERE a IN carray($PTR1,4,'int32');
  }
} {(005) (007) (013) (017)}
do_catchsql_test tabfunc01-710 {
  SELECT b FROM t600 WHERE a IN carray($PTR1,5,'int33');
} {1 {unknown datatype: 'int33'}}

do_test tabfunc01-720 {
  set PTR2 [int64array_addr 5 7 13 17 23]
  db eval {
    SELECT b FROM t600, carray($PTR2,5,'int64') WHERE a=value;
  }
} {(005) (007) (013) (017) (023)}
do_test tabfunc01-721 {
  db eval {
    SELECT remember(123,$PTR2);
    SELECT value FROM carray($PTR2,5,'int64');
  }
} {123 123 7 13 17 23}
do_test tabfunc01-722 {
  set PTR3 [expr {$PTR2+16}]
  db eval {
    SELECT remember(987,$PTR3);
    SELECT value FROM carray($PTR2,5,'int64');
  }
} {987 123 7 987 17 23}

do_test tabfunc01-730 {
  set PTR4 [doublearray_addr 5.0 7.0 13.0 17.0 23.0]
  db eval {
    SELECT b FROM t600, carray($PTR4,5,'double') WHERE a=value;
  }
} {(005) (007) (013) (017) (023)}

do_test tabfunc01-740 {
  set PTR5 [textarray_addr x5 x7 x13 x17 x23]
  db eval {

    SELECT b FROM t600, carray($PTR5,5,'char*') WHERE a=trim(value,'x');
  }
} {(005) (007) (013) (017) (023)}

do_test tabfunc01-750 {
  db eval {
    SELECT aa.value, bb.value, '|'
      FROM carray($PTR4,5,'double') AS aa
      JOIN carray($PTR5,5,'char*') AS bb ON aa.rowid=bb.rowid;
  }
} {5.0 x5 | 7.0 x7 | 13.0 x13 | 17.0 x17 | 23.0 x23 |}

# Free up memory allocations
intarray_addr
int64array_addr
doublearray_addr
textarray_addr

finish_test







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  SELECT b FROM t600 WHERE a IN generate_series(2,52,10);
} {(002) (012) (022) (032) (042) (052)}


do_test tabfunc01-700 {
  set PTR1 [intarray_addr 5 7 13 17 23]
  db eval {
    SELECT b FROM t600, carray(inttoptr($PTR1),5) WHERE a=value;
  }
} {(005) (007) (013) (017) (023)}
do_test tabfunc01-701 {
  db eval {
    SELECT b FROM t600 WHERE a IN carray(inttoptr($PTR1),5,'int32');
  }
} {(005) (007) (013) (017) (023)}
do_test tabfunc01-702 {
  db eval {
    SELECT b FROM t600 WHERE a IN carray(inttoptr($PTR1),4,'int32');
  }
} {(005) (007) (013) (017)}
do_catchsql_test tabfunc01-710 {
  SELECT b FROM t600 WHERE a IN carray(inttoptr($PTR1),5,'int33');
} {1 {unknown datatype: 'int33'}}

do_test tabfunc01-720 {
  set PTR2 [int64array_addr 5 7 13 17 23]
  db eval {
    SELECT b FROM t600, carray(inttoptr($PTR2),5,'int64') WHERE a=value;
  }
} {(005) (007) (013) (017) (023)}
do_test tabfunc01-721 {
  db eval {
    SELECT remember(123,inttoptr($PTR2));
    SELECT value FROM carray(inttoptr($PTR2),5,'int64');
  }
} {123 123 7 13 17 23}
do_test tabfunc01-722 {
  set PTR3 [expr {$PTR2+16}]
  db eval {
    SELECT remember(987,inttoptr($PTR3));
    SELECT value FROM carray(inttoptr($PTR2),5,'int64');
  }
} {987 123 7 987 17 23}

do_test tabfunc01-730 {
  set PTR4 [doublearray_addr 5.0 7.0 13.0 17.0 23.0]
  db eval {
    SELECT b FROM t600, carray(inttoptr($PTR4),5,'double') WHERE a=value;
  }
} {(005) (007) (013) (017) (023)}

do_test tabfunc01-740 {
  set PTR5 [textarray_addr x5 x7 x13 x17 x23]
  db eval {
    SELECT b FROM t600, carray(inttoptr($PTR5),5,'char*')
     WHERE a=trim(value,'x');
  }
} {(005) (007) (013) (017) (023)}

do_test tabfunc01-750 {
  db eval {
    SELECT aa.value, bb.value, '|'
      FROM carray(inttoptr($PTR4),5,'double') AS aa
      JOIN carray(inttoptr($PTR5),5,'char*') AS bb ON aa.rowid=bb.rowid;
  }
} {5.0 x5 | 7.0 x7 | 13.0 x13 | 17.0 x17 | 23.0 x23 |}

# Free up memory allocations
intarray_addr
int64array_addr
doublearray_addr
textarray_addr

finish_test