[sql] Import reference version of SQLite 3.7.6.3.

third_party/sqlite/sqlite-src-3070603/ext/fts3/fts3.c

Index: third_party/sqlite/sqlite-src-3070603/ext/fts3/fts3.c
diff --git a/third_party/sqlite/src/ext/fts3/fts3.c b/third_party/sqlite/sqlite-src-3070603/ext/fts3/fts3.c
similarity index 99%
copy from third_party/sqlite/src/ext/fts3/fts3.c
copy to third_party/sqlite/sqlite-src-3070603/ext/fts3/fts3.c
index d11572ac4cc57d2ddae7087a7e9eed71d93fdd68..20da05164d2a6cbffb0c2859e4859dadcc75606c 100644
--- a/third_party/sqlite/src/ext/fts3/fts3.c
+++ b/third_party/sqlite/sqlite-src-3070603/ext/fts3/fts3.c
@@ -291,7 +291,6 @@
 ** deletions and duplications.  This would basically be a forced merge
 ** into a single segment.
 */
-#define CHROMIUM_FTS3_CHANGES 1
 
 #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3)
 
@@ -630,9 +629,6 @@ static void fts3DatabasePageSize(int *pRc, Fts3Table *p){
         sqlite3_step(pStmt);
         p->nPgsz = sqlite3_column_int(pStmt, 0);
         rc = sqlite3_finalize(pStmt);
-      }else if( rc==SQLITE_AUTH ){
-        p->nPgsz = 1024;
-        rc = SQLITE_OK;
       }
     }
     assert( p->nPgsz>0 || rc!=SQLITE_OK );
@@ -1230,13 +1226,7 @@ static int fts3ScanInteriorNode(
     isFirstTerm = 0;
     zCsr += sqlite3Fts3GetVarint32(zCsr, &nSuffix);
     
-    /* NOTE(shess): Previous code checked for negative nPrefix and
-    ** nSuffix and suffix overrunning zEnd.  Additionally corrupt if
-    ** the prefix is longer than the previous term, or if the suffix
-    ** causes overflow.
-    */
-    if( nPrefix<0 || nSuffix<0 /* || nPrefix>nBuffer */
-     || &zCsr[nSuffix]<zCsr || &zCsr[nSuffix]>zEnd ){
+    if( nPrefix<0 || nSuffix<0 || &zCsr[nSuffix]>zEnd ){
       rc = SQLITE_CORRUPT;
       goto finish_scan;
     }
@@ -3656,11 +3646,7 @@ int sqlite3Fts3Init(sqlite3 *db){
   ** module with sqlite.
   */
   if( SQLITE_OK==rc 
-#if CHROMIUM_FTS3_CHANGES && !SQLITE_TEST
-      /* fts3_tokenizer() disabled for security reasons. */
-#else
    && SQLITE_OK==(rc = sqlite3Fts3InitHashTable(db, pHash, "fts3_tokenizer"))
-#endif
    && SQLITE_OK==(rc = sqlite3_overload_function(db, "snippet", -1))
    && SQLITE_OK==(rc = sqlite3_overload_function(db, "offsets", 1))
    && SQLITE_OK==(rc = sqlite3_overload_function(db, "matchinfo", 1))
@@ -3670,15 +3656,11 @@ int sqlite3Fts3Init(sqlite3 *db){
     rc = sqlite3_create_module_v2(
         db, "fts3", &fts3Module, (void *)pHash, hashDestroy
     );
-#if CHROMIUM_FTS3_CHANGES && !SQLITE_TEST
-    /* Disable fts4 pending review. */
-#else
     if( rc==SQLITE_OK ){
       rc = sqlite3_create_module_v2(
           db, "fts4", &fts3Module, (void *)pHash, 0
       );
     }
-#endif
     return rc;
   }