SQLite

    return SQLITE_OK;
  }
  if( db->init.busy ){
    if( sqlite3_stricmp(zType, db->init.azInit[0])
     || sqlite3_stricmp(zName, db->init.azInit[1])
     || sqlite3_stricmp(zTblName, db->init.azInit[2])
    ){
      if( sqlite3Config.bExtraSchemaChecks ){
        sqlite3ErrorMsg(pParse, ""); /* corruptSchema() will supply the error */
        return SQLITE_ERROR;
      }
    }
  }else{
    if( pParse->nested==0 
     && 0==sqlite3StrNICmp(zName, "sqlite_", 7)
    ){
      sqlite3ErrorMsg(pParse, "object name reserved for internal use: %s",
                      zName);

SQLITE_WSD struct Sqlite3Config sqlite3Config = {
   SQLITE_DEFAULT_MEMSTATUS,  /* bMemstat */
   1,                         /* bCoreMutex */
   SQLITE_THREADSAFE==1,      /* bFullMutex */
   SQLITE_USE_URI,            /* bOpenUri */
   SQLITE_ALLOW_COVERING_INDEX_SCAN,   /* bUseCis */
   0,                         /* bSmallMalloc */
   1,                         /* bExtraSchemaChecks */
   0x7ffffffe,                /* mxStrlen */
   0,                         /* neverCorrupt */
   SQLITE_DEFAULT_LOOKASIDE,  /* szLookaside, nLookaside */
   SQLITE_STMTJRNL_SPILL,     /* nStmtSpill */
   {0,0,0,0,0,0,0,0},         /* m */
   {0,0,0,0,0,0,0,0,0},       /* mutex */
   {0,0,0,0,0,0,0,0,0,0,0,0,0},/* pcache2 */

    ** testing causes certain assert() statements in the code to be activated
    ** that demonstrat invariants on well-formed database files.
    */
    case SQLITE_TESTCTRL_NEVER_CORRUPT: {
      sqlite3GlobalConfig.neverCorrupt = va_arg(ap, int);
      break;
    }

    /*   sqlite3_test_control(SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS, int);
    **
    ** Set or clear a flag that causes SQLite to verify that type, name,
    ** and tbl_name fields of the sqlite_master table.  This is normally
    ** on, but it is sometimes useful to turn it off for testing.
    */
    case SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS: {
      sqlite3GlobalConfig.bExtraSchemaChecks = va_arg(ap, int);
      break;
    }

    /* Set the threshold at which OP_Once counters reset back to zero.
    ** By default this is 0x7ffffffe (over 2 billion), but that value is
    ** too big to test in a reasonable amount of time, so this control is
    ** provided to set a small and easily reachable reset value.
    */
    case SQLITE_TESTCTRL_ONCE_RESET_THRESHOLD: {

       const char *zUsage;      /* Usage notes */
    } aCtrl[] = {
      { "always",             SQLITE_TESTCTRL_ALWAYS,        "BOOLEAN"            },
      { "assert",             SQLITE_TESTCTRL_ASSERT,        "BOOLEAN"            },
    /*{ "benign_malloc_hooks",SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS, ""          },*/
    /*{ "bitvec_test",        SQLITE_TESTCTRL_BITVEC_TEST,   ""                },*/
      { "byteorder",          SQLITE_TESTCTRL_BYTEORDER,     ""                   },
      { "extra_schema_checks",SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS,"BOOLEAN"       },
    /*{ "fault_install",      SQLITE_TESTCTRL_FAULT_INSTALL, ""                }, */
      { "imposter",           SQLITE_TESTCTRL_IMPOSTER,   "SCHEMA ON/OFF ROOTPAGE"},
      { "internal_functions", SQLITE_TESTCTRL_INTERNAL_FUNCTIONS, "BOOLEAN"       },
      { "localtime_fault",    SQLITE_TESTCTRL_LOCALTIME_FAULT,"BOOLEAN"           },
      { "never_corrupt",      SQLITE_TESTCTRL_NEVER_CORRUPT, "BOOLEAN"            },
      { "optimizations",      SQLITE_TESTCTRL_OPTIMIZATIONS, "DISABLE-MASK"       },
#ifdef YYCOVERAGE

#define SQLITE_TESTCTRL_BYTEORDER               22
#define SQLITE_TESTCTRL_ISINIT                  23
#define SQLITE_TESTCTRL_SORTER_MMAP             24
#define SQLITE_TESTCTRL_IMPOSTER                25
#define SQLITE_TESTCTRL_PARSER_COVERAGE         26
#define SQLITE_TESTCTRL_RESULT_INTREAL          27
#define SQLITE_TESTCTRL_PRNG_SEED               28
#define SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS     29
#define SQLITE_TESTCTRL_LAST                    29  /* Largest TESTCTRL */

/*
** CAPI3REF: SQL Keyword Checking
**
** These routines provide access to the set of SQL language keywords 
** recognized by SQLite.  Applications can uses these routines to determine
** whether or not a specific identifier needs to be escaped (for example,

/*
** Structure containing global configuration data for the SQLite library.
**
** This structure also contains some state information.
*/
struct Sqlite3Config {
  int bMemstat;                     /* True to enable memory status */
  u8 bCoreMutex;                    /* True to enable core mutexing */
  u8 bFullMutex;                    /* True to enable full mutexing */
  u8 bOpenUri;                      /* True to interpret filenames as URIs */
  u8 bUseCis;                       /* Use covering indices for full-scans */
  u8 bSmallMalloc;                  /* Avoid large memory allocations if true */
  u8 bExtraSchemaChecks;            /* Verify type,name,tbl_name in schema */
  int mxStrlen;                     /* Maximum string length */
  int neverCorrupt;                 /* Database is always well-formed */
  int szLookaside;                  /* Default lookaside buffer size */
  int nLookaside;                   /* Default lookaside buffer count */
  int nStmtSpill;                   /* Stmt-journal spill-to-disk threshold */
  sqlite3_mem_methods m;            /* Low-level memory allocation interface */
  sqlite3_mutex_methods mutex;      /* Low-level mutex interface */