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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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Overview
Comment:Enhance dbfuzz2 so that with the -v option it shows the return code and error message for any failing SQL statements.
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SHA3-256: 3a127ef9f7feafe6ba8c75e4eb29e28aa61a30249082cc8767ada1ec0cc0b7f1
User & Date: drh 2019-02-04 19:45:26
Context
2019-02-04
19:50
Add the -memtrace option to dbfuzz2. check-in: 67fecbc7 user: drh tags: trunk
19:45
Enhance dbfuzz2 so that with the -v option it shows the return code and error message for any failing SQL statements. check-in: 3a127ef9 user: drh tags: trunk
19:12
Ensure that the sqlite3_exec() callback gets the correct number of columns for a query, even if the schema changes out from under it. check-in: a16ffb5a user: drh tags: trunk
Changes
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Changes to test/dbfuzz2.c.

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*/
int LLVMFuzzerTestOneInput(const uint8_t *aData, size_t nByte){
  unsigned char *a;
  sqlite3 *db;
  int rc;
  int i;
  sqlite3_int64 x;


  if( eVerbosity>=1 ){
    printf("************** nByte=%d ***************\n", (int)nByte);
    fflush(stdout);
  }
  if( sqlite3_initialize() ) return 0;
  rc = sqlite3_open(0, &db);
................................................................................
    sqlite3_exec(db, "PRAGMA vdbe_debug=ON", 0, 0, 0);
  }
  for(i=0; i<sizeof(azSql)/sizeof(azSql[0]); i++){
    if( eVerbosity>=1 ){
      printf("%s\n", azSql[i]);
      fflush(stdout);
    }

    sqlite3_exec(db, azSql[i], 0, 0, 0);




  }
  rc = sqlite3_close(db);
  if( rc!=SQLITE_OK ){
    fprintf(stdout, "sqlite3_close() returns %d\n", rc);
  }
  if( sqlite3_memory_used()!=0 ){
    int nAlloc = 0;







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*/
int LLVMFuzzerTestOneInput(const uint8_t *aData, size_t nByte){
  unsigned char *a;
  sqlite3 *db;
  int rc;
  int i;
  sqlite3_int64 x;
  char *zErr = 0;

  if( eVerbosity>=1 ){
    printf("************** nByte=%d ***************\n", (int)nByte);
    fflush(stdout);
  }
  if( sqlite3_initialize() ) return 0;
  rc = sqlite3_open(0, &db);
................................................................................
    sqlite3_exec(db, "PRAGMA vdbe_debug=ON", 0, 0, 0);
  }
  for(i=0; i<sizeof(azSql)/sizeof(azSql[0]); i++){
    if( eVerbosity>=1 ){
      printf("%s\n", azSql[i]);
      fflush(stdout);
    }
    zErr = 0;
    rc = sqlite3_exec(db, azSql[i], 0, 0, &zErr);
    if( rc && eVerbosity>=1 ){
      printf("-- rc=%d zErr=%s\n", rc, zErr);
    }
    sqlite3_free(zErr);
  }
  rc = sqlite3_close(db);
  if( rc!=SQLITE_OK ){
    fprintf(stdout, "sqlite3_close() returns %d\n", rc);
  }
  if( sqlite3_memory_used()!=0 ){
    int nAlloc = 0;