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Overview
Comment:Fix some harmless gcc compiler warnings. Mostly in fts5, but also two in the core code.
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SHA1:5d44d4a6cf5c6b983cbd846d9bc34251df8f4bc5
User & Date: dan 2015-12-23 16:42:27
Context
2015-12-24
14:53
Avoid a harmless compiler warning on systems where the byteorder cannot be determined at compile-time. check-in: 7c7b7f26 user: drh tags: trunk
2015-12-23
16:42
Fix some harmless gcc compiler warnings. Mostly in fts5, but also two in the core code. check-in: 5d44d4a6 user: dan tags: trunk
10:54
Enhance the 'utc' modifier on date/time functions so that if the LHS is already known to be in UTC, the modifier becomes a no-op. This is not an incompatibility because the behavior is documented as "undefined" in that scenario. check-in: b910a3d5 user: drh tags: trunk
Changes
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Changes to ext/fts5/fts5_aux.c. 

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    { "snippet",   0, fts5SnippetFunction, 0 },
    { "highlight", 0, fts5HighlightFunction, 0 },
    { "bm25",      0, fts5Bm25Function,    0 },
  };
  int rc = SQLITE_OK;             /* Return code */
  int i;                          /* To iterate through builtin functions */

  for(i=0; rc==SQLITE_OK && i<sizeof(aBuiltin)/sizeof(aBuiltin[0]); i++){
    rc = pApi->xCreateFunction(pApi,
        aBuiltin[i].zFunc,
        aBuiltin[i].pUserData,
        aBuiltin[i].xFunc,
        aBuiltin[i].xDestroy
    );
  }

  return rc;
}










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    { "snippet",   0, fts5SnippetFunction, 0 },
    { "highlight", 0, fts5HighlightFunction, 0 },
    { "bm25",      0, fts5Bm25Function,    0 },
  };
  int rc = SQLITE_OK;             /* Return code */
  int i;                          /* To iterate through builtin functions */

  for(i=0; rc==SQLITE_OK && i<(int)ArraySize(aBuiltin); i++){
    rc = pApi->xCreateFunction(pApi,
        aBuiltin[i].zFunc,
        aBuiltin[i].pUserData,
        aBuiltin[i].xFunc,
        aBuiltin[i].xDestroy
    );
  }

  return rc;
}

Changes to ext/fts5/fts5_expr.c. 

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  int i;
  int rc = SQLITE_OK;
  
  fts5BufferZero(&pPhrase->poslist);

  /* If the aStatic[] array is not large enough, allocate a large array
  ** using sqlite3_malloc(). This approach could be improved upon. */
  if( pPhrase->nTerm>(sizeof(aStatic) / sizeof(aStatic[0])) ){
    int nByte = sizeof(Fts5PoslistReader) * pPhrase->nTerm;
    aIter = (Fts5PoslistReader*)sqlite3_malloc(nByte);
    if( !aIter ) return SQLITE_NOMEM;
  }
  memset(aIter, 0, sizeof(Fts5PoslistReader) * pPhrase->nTerm);

  /* Initialize a term iterator for each term in the phrase */
................................................................................
  int rc = *pRc;
  int bMatch;

  assert( pNear->nPhrase>1 );

  /* If the aStatic[] array is not large enough, allocate a large array
  ** using sqlite3_malloc(). This approach could be improved upon. */
  if( pNear->nPhrase>(sizeof(aStatic) / sizeof(aStatic[0])) ){
    int nByte = sizeof(Fts5NearTrimmer) * pNear->nPhrase;
    a = (Fts5NearTrimmer*)sqlite3Fts5MallocZero(&rc, nByte);
  }else{
    memset(aStatic, 0, sizeof(aStatic));
  }
  if( rc!=SQLITE_OK ){
    *pRc = rc;
................................................................................
    { "fts5_isalnum",  fts5ExprIsAlnum },
    { "fts5_fold",     fts5ExprFold },
  };
  int i;
  int rc = SQLITE_OK;
  void *pCtx = (void*)pGlobal;

  for(i=0; rc==SQLITE_OK && i<(sizeof(aFunc) / sizeof(aFunc[0])); i++){
    struct Fts5ExprFunc *p = &aFunc[i];
    rc = sqlite3_create_function(db, p->z, -1, SQLITE_UTF8, pCtx, p->x, 0, 0);
  }

  /* Avoid a warning indicating that sqlite3Fts5ParserTrace() is unused */
#ifndef NDEBUG
  (void)sqlite3Fts5ParserTrace;








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  int i;
  int rc = SQLITE_OK;
  
  fts5BufferZero(&pPhrase->poslist);

  /* If the aStatic[] array is not large enough, allocate a large array
  ** using sqlite3_malloc(). This approach could be improved upon. */
  if( pPhrase->nTerm>(int)ArraySize(aStatic) ){
    int nByte = sizeof(Fts5PoslistReader) * pPhrase->nTerm;
    aIter = (Fts5PoslistReader*)sqlite3_malloc(nByte);
    if( !aIter ) return SQLITE_NOMEM;
  }
  memset(aIter, 0, sizeof(Fts5PoslistReader) * pPhrase->nTerm);

  /* Initialize a term iterator for each term in the phrase */
................................................................................
  int rc = *pRc;
  int bMatch;

  assert( pNear->nPhrase>1 );

  /* If the aStatic[] array is not large enough, allocate a large array
  ** using sqlite3_malloc(). This approach could be improved upon. */
  if( pNear->nPhrase>(int)ArraySize(aStatic) ){
    int nByte = sizeof(Fts5NearTrimmer) * pNear->nPhrase;
    a = (Fts5NearTrimmer*)sqlite3Fts5MallocZero(&rc, nByte);
  }else{
    memset(aStatic, 0, sizeof(aStatic));
  }
  if( rc!=SQLITE_OK ){
    *pRc = rc;
................................................................................
    { "fts5_isalnum",  fts5ExprIsAlnum },
    { "fts5_fold",     fts5ExprFold },
  };
  int i;
  int rc = SQLITE_OK;
  void *pCtx = (void*)pGlobal;

  for(i=0; rc==SQLITE_OK && i<(int)ArraySize(aFunc); i++){
    struct Fts5ExprFunc *p = &aFunc[i];
    rc = sqlite3_create_function(db, p->z, -1, SQLITE_UTF8, pCtx, p->x, 0, 0);
  }

  /* Avoid a warning indicating that sqlite3Fts5ParserTrace() is unused */
#ifndef NDEBUG
  (void)sqlite3Fts5ParserTrace;

Changes to ext/fts5/fts5_main.c. 

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  aColMap[1] = pConfig->nCol;
  aColMap[2] = pConfig->nCol+1;

  /* Set idxFlags flags for all WHERE clause terms that will be used. */
  for(i=0; i<pInfo->nConstraint; i++){
    struct sqlite3_index_constraint *p = &pInfo->aConstraint[i];
    int j;
    for(j=0; j<sizeof(aConstraint)/sizeof(aConstraint[0]); j++){
      struct Constraint *pC = &aConstraint[j];
      if( p->iColumn==aColMap[pC->iCol] && p->op & pC->op ){
        if( p->usable ){
          pC->iConsIndex = i;
          idxFlags |= pC->fts5op;
        }else if( j==0 ){
          /* As there exists an unusable MATCH constraint this is an 
................................................................................
    pInfo->estimatedCost = bHasMatch ? 750.0 : 750000.0;
  }else{
    pInfo->estimatedCost = bHasMatch ? 1000.0 : 1000000.0;
  }

  /* Assign argvIndex values to each constraint in use. */
  iNext = 1;
  for(i=0; i<sizeof(aConstraint)/sizeof(aConstraint[0]); i++){
    struct Constraint *pC = &aConstraint[i];
    if( pC->iConsIndex>=0 ){
      pInfo->aConstraintUsage[pC->iConsIndex].argvIndex = iNext++;
      pInfo->aConstraintUsage[pC->iConsIndex].omit = (unsigned char)pC->omit;
    }
  }









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  aColMap[1] = pConfig->nCol;
  aColMap[2] = pConfig->nCol+1;

  /* Set idxFlags flags for all WHERE clause terms that will be used. */
  for(i=0; i<pInfo->nConstraint; i++){
    struct sqlite3_index_constraint *p = &pInfo->aConstraint[i];
    int j;
    for(j=0; j<(int)ArraySize(aConstraint); j++){
      struct Constraint *pC = &aConstraint[j];
      if( p->iColumn==aColMap[pC->iCol] && p->op & pC->op ){
        if( p->usable ){
          pC->iConsIndex = i;
          idxFlags |= pC->fts5op;
        }else if( j==0 ){
          /* As there exists an unusable MATCH constraint this is an 
................................................................................
    pInfo->estimatedCost = bHasMatch ? 750.0 : 750000.0;
  }else{
    pInfo->estimatedCost = bHasMatch ? 1000.0 : 1000000.0;
  }

  /* Assign argvIndex values to each constraint in use. */
  iNext = 1;
  for(i=0; i<(int)ArraySize(aConstraint); i++){
    struct Constraint *pC = &aConstraint[i];
    if( pC->iConsIndex>=0 ){
      pInfo->aConstraintUsage[pC->iConsIndex].argvIndex = iNext++;
      pInfo->aConstraintUsage[pC->iConsIndex].omit = (unsigned char)pC->omit;
    }
  }

Changes to ext/fts5/fts5_storage.c. 

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*/
int sqlite3Fts5StorageClose(Fts5Storage *p){
  int rc = SQLITE_OK;
  if( p ){
    int i;

    /* Finalize all SQL statements */
    for(i=0; i<ArraySize(p->aStmt); i++){
      sqlite3_finalize(p->aStmt[i]);
    }

    sqlite3_free(p);
  }
  return rc;
}








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*/
int sqlite3Fts5StorageClose(Fts5Storage *p){
  int rc = SQLITE_OK;
  if( p ){
    int i;

    /* Finalize all SQL statements */
    for(i=0; i<(int)ArraySize(p->aStmt); i++){
      sqlite3_finalize(p->aStmt[i]);
    }

    sqlite3_free(p);
  }
  return rc;
}

Changes to ext/fts5/fts5_tokenize.c. 

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    { "ascii",     {fts5AsciiCreate, fts5AsciiDelete, fts5AsciiTokenize }},
    { "porter",    {fts5PorterCreate, fts5PorterDelete, fts5PorterTokenize }},
  };
  
  int rc = SQLITE_OK;             /* Return code */
  int i;                          /* To iterate through builtin functions */

  for(i=0; rc==SQLITE_OK && i<sizeof(aBuiltin)/sizeof(aBuiltin[0]); i++){
    rc = pApi->xCreateTokenizer(pApi,
        aBuiltin[i].zName,
        (void*)pApi,
        &aBuiltin[i].x,
        0
    );
  }

  return rc;
}










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    { "ascii",     {fts5AsciiCreate, fts5AsciiDelete, fts5AsciiTokenize }},
    { "porter",    {fts5PorterCreate, fts5PorterDelete, fts5PorterTokenize }},
  };
  
  int rc = SQLITE_OK;             /* Return code */
  int i;                          /* To iterate through builtin functions */

  for(i=0; rc==SQLITE_OK && i<(int)ArraySize(aBuiltin); i++){
    rc = pApi->xCreateTokenizer(pApi,
        aBuiltin[i].zName,
        (void*)pApi,
        &aBuiltin[i].x,
        0
    );
  }

  return rc;
}

Changes to src/expr.c. 

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      }else{
        nToken = 0;
      }
      if( isReduced ){
        assert( ExprHasProperty(p, EP_Reduced)==0 );
        memcpy(zAlloc, p, nNewSize);
      }else{
        int nSize = exprStructSize(p);
        memcpy(zAlloc, p, nSize);
        if( nSize<EXPR_FULLSIZE ){ 
          memset(&zAlloc[nSize], 0, EXPR_FULLSIZE-nSize);
        }
      }

      /* Set the EP_Reduced, EP_TokenOnly, and EP_Static flags appropriately. */








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      }else{
        nToken = 0;
      }
      if( isReduced ){
        assert( ExprHasProperty(p, EP_Reduced)==0 );
        memcpy(zAlloc, p, nNewSize);
      }else{
        u32 nSize = (u32)exprStructSize(p);
        memcpy(zAlloc, p, nSize);
        if( nSize<EXPR_FULLSIZE ){ 
          memset(&zAlloc[nSize], 0, EXPR_FULLSIZE-nSize);
        }
      }

      /* Set the EP_Reduced, EP_TokenOnly, and EP_Static flags appropriately. */

Changes to src/mutex_unix.c. 

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  volatile int nRef;         /* Number of entrances */
  volatile pthread_t owner;  /* Thread that is within this mutex */
  int trace;                 /* True to trace changes */
#endif
};
#if SQLITE_MUTEX_NREF
#define SQLITE3_MUTEX_INITIALIZER {PTHREAD_MUTEX_INITIALIZER,0,0,(pthread_t)0,0}


#else
#define SQLITE3_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER }
#endif

/*
** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are
** intended for use only inside assert() statements.  On some platforms,








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  volatile int nRef;         /* Number of entrances */
  volatile pthread_t owner;  /* Thread that is within this mutex */
  int trace;                 /* True to trace changes */
#endif
};
#if SQLITE_MUTEX_NREF
#define SQLITE3_MUTEX_INITIALIZER {PTHREAD_MUTEX_INITIALIZER,0,0,(pthread_t)0,0}
#elif defined(SQLITE_ENABLE_API_ARMOR)
#define SQLITE3_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, 0 }
#else
#define SQLITE3_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER }
#endif

/*
** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are
** intended for use only inside assert() statements.  On some platforms,

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