Import SQLite 3.8.7.4.

third_party/sqlite/patches/0003-backport-SQLite-memcmp-patch.patch

-From cd23f4b26a4575353589a97f039accb2c8ec5143 Mon Sep 17 00:00:00 2001
-From: Scott Hess <shess@chromium.org>
-Date: Fri, 10 May 2013 02:52:43 +0000
-Subject: [PATCH 03/23] [backport] SQLite memcmp patch.
-
-http://www.sqlite.org/src/info/d73435587b
-
-Verified that the amalgamation came out with all the right patches by
-comparing the amalgamation diff to the appropriately-ordered diffs of
-the original files.
-
-BUG=178677
-
-Original review URL: https://chromiumcodereview.appspot.com/15070002
----
- third_party/sqlite/src/src/analyze.c | 4 ++--
- third_party/sqlite/src/src/build.c   | 2 +-
- third_party/sqlite/src/src/expr.c    | 4 +---
- third_party/sqlite/src/src/os_unix.c | 2 +-
- third_party/sqlite/src/src/vdbeapi.c | 2 +-
- 5 files changed, 6 insertions(+), 8 deletions(-)
-
-diff --git a/third_party/sqlite/src/src/analyze.c b/third_party/sqlite/src/src/analyze.c
-index 17c1de8..2444e74 100644
---- a/third_party/sqlite/src/src/analyze.c
-+++ b/third_party/sqlite/src/src/analyze.c
-@@ -142,7 +142,7 @@ static void analyzeOneTable(
-     /* Do not gather statistics on views or virtual tables */
-     return;
-   }
--  if( memcmp(pTab->zName, "sqlite_", 7)==0 ){
-+  if( sqlite3_strnicmp(pTab->zName, "sqlite_", 7)==0 ){
-     /* Do not gather statistics on system tables */
-     return;
-   }
-@@ -548,7 +548,7 @@ static int analysisLoader(void *pData, int argc, char **argv, char **NotUsed){
-     if( pIndex==0 ) break;
-     pIndex->aiRowEst[i] = v;
-     if( *z==' ' ) z++;
--    if( memcmp(z, "unordered", 10)==0 ){
-+    if( strcmp(z, "unordered")==0 ){
-       pIndex->bUnordered = 1;
-       break;
-     }
-diff --git a/third_party/sqlite/src/src/build.c b/third_party/sqlite/src/src/build.c
-index 83a1db8..25a74ca 100644
---- a/third_party/sqlite/src/src/build.c
-+++ b/third_party/sqlite/src/src/build.c
-@@ -2477,7 +2477,7 @@ Index *sqlite3CreateIndex(
-   assert( pTab!=0 );
-   assert( pParse->nErr==0 );
-   if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 
--       && memcmp(&pTab->zName[7],"altertab_",9)!=0 ){
-+       && sqlite3StrNICmp(&pTab->zName[7],"altertab_",9)!=0 ){
-     sqlite3ErrorMsg(pParse, "table %s may not be indexed", pTab->zName);
-     goto exit_create_index;
-   }
-diff --git a/third_party/sqlite/src/src/expr.c b/third_party/sqlite/src/src/expr.c
-index 2699ae1..9d1193b 100644
---- a/third_party/sqlite/src/src/expr.c
-+++ b/third_party/sqlite/src/src/expr.c
-@@ -578,12 +578,10 @@ void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr){
-     ** has never appeared before, reuse the same variable number
-     */
-     int i;
--    u32 n;
--    n = sqlite3Strlen30(z);
-     for(i=0; i<pParse->nVarExpr; i++){
-       Expr *pE = pParse->apVarExpr[i];
-       assert( pE!=0 );
--      if( memcmp(pE->u.zToken, z, n)==0 && pE->u.zToken[n]==0 ){
-+      if( strcmp(pE->u.zToken, z)==0 ){
-         pExpr->iColumn = pE->iColumn;
-         break;
-       }
-diff --git a/third_party/sqlite/src/src/os_unix.c b/third_party/sqlite/src/src/os_unix.c
-index 2626ab4..998e353 100644
---- a/third_party/sqlite/src/src/os_unix.c
-+++ b/third_party/sqlite/src/src/os_unix.c
-@@ -4456,7 +4456,7 @@ static int fillInUnixFile(
-   pNew->h = h;
-   pNew->dirfd = dirfd;
-   pNew->zPath = zFilename;
--  if( memcmp(pVfs->zName,"unix-excl",10)==0 ){
-+  if( strcmp(pVfs->zName,"unix-excl")==0 ){
-     pNew->ctrlFlags = UNIXFILE_EXCL;
-   }else{
-     pNew->ctrlFlags = 0;
-diff --git a/third_party/sqlite/src/src/vdbeapi.c b/third_party/sqlite/src/src/vdbeapi.c
-index 90baacc..80ceb9f 100644
---- a/third_party/sqlite/src/src/vdbeapi.c
-+++ b/third_party/sqlite/src/src/vdbeapi.c
-@@ -1222,7 +1222,7 @@ int sqlite3VdbeParameterIndex(Vdbe *p, const char *zName, int nName){
-   if( zName ){
-     for(i=0; i<p->nVar; i++){
-       const char *z = p->azVar[i];
--      if( z && memcmp(z,zName,nName)==0 && z[nName]==0 ){
-+      if( z && strncmp(z,zName,nName)==0 && z[nName]==0 ){
-         return i+1;
-       }
-     }
--- 
-2.2.1
-