[sql] Import SQLite 3.17.0.

third_party/sqlite/patches/0012-Use-safe-macros-for-UTF-8-iteration-in-sqlite-icu-ex.patch

-From 840d5ead53a23f8e1f54db479f2f5fc27f5821bf Mon Sep 17 00:00:00 2001
-From: Scott Hess <shess@chromium.org>
-Date: Mon, 1 Feb 2016 17:07:24 -0800
-Subject: [PATCH 12/12] Use safe macros for UTF-8 iteration in sqlite icu
- extension.
-
-Instead of U8_NEXT_UNSAFE and U8_FWD1_UNSAFE, use
-U8_NEXT_OR_FFFD (efficient) and U8_FWD1 (slower than UNSAFE version).
-
-BUG=575205
----
- third_party/sqlite/src/ext/icu/icu.c | 10 +++++-----
- 1 file changed, 5 insertions(+), 5 deletions(-)
-
-diff --git a/third_party/sqlite/src/ext/icu/icu.c b/third_party/sqlite/src/ext/icu/icu.c
-index a2ff492..7e2b800 100644
---- a/third_party/sqlite/src/ext/icu/icu.c
-+++ b/third_party/sqlite/src/ext/icu/icu.c
-@@ -82,7 +82,7 @@ static int icuLikeCompare(
- 
-     /* Read (and consume) the next character from the input pattern. */
-     UChar32 uPattern;
--    U8_NEXT_UNSAFE(zPattern, iPattern, uPattern);
-+    U8_NEXT_OR_FFFD(zPattern, iPattern, -1, uPattern);
- 
-     /* There are now 4 possibilities:
-     **
-@@ -102,7 +102,7 @@ static int icuLikeCompare(
-       while( (c=zPattern[iPattern]) == MATCH_ALL || c == MATCH_ONE ){
-         if( c==MATCH_ONE ){
-           if( zString[iString]==0 ) return 0;
--          U8_FWD_1_UNSAFE(zString, iString);
-+          U8_FWD_1(zString, iString, -1);
-         }
-         iPattern++;
-       }
-@@ -113,14 +113,14 @@ static int icuLikeCompare(
-         if( icuLikeCompare(&zPattern[iPattern], &zString[iString], uEsc) ){
-           return 1;
-         }
--        U8_FWD_1_UNSAFE(zString, iString);
-+        U8_FWD_1(zString, iString, -1);
-       }
-       return 0;
- 
-     }else if( !prevEscape && uPattern==MATCH_ONE ){
-       /* Case 2. */
-       if( zString[iString]==0 ) return 0;
--      U8_FWD_1_UNSAFE(zString, iString);
-+      U8_FWD_1(zString, iString, -1);
- 
-     }else if( !prevEscape && uPattern==uEsc){
-       /* Case 3. */
-@@ -129,7 +129,7 @@ static int icuLikeCompare(
-     }else{
-       /* Case 4. */
-       UChar32 uString;
--      U8_NEXT_UNSAFE(zString, iString, uString);
-+      U8_NEXT_OR_FFFD(zString, iString, -1, uString);
-       uString = u_foldCase(uString, U_FOLD_CASE_DEFAULT);
-       uPattern = u_foldCase(uPattern, U_FOLD_CASE_DEFAULT);
-       if( uString!=uPattern ){
--- 
-2.7.0
-