[sql] Import SQLite 3.17.0.

third_party/sqlite/src/src/mem1.c

Index: third_party/sqlite/src/src/mem1.c
diff --git a/third_party/sqlite/src/src/mem1.c b/third_party/sqlite/src/src/mem1.c
index b960ccfd477368a2d0e7af46f74f7eb00a075fe2..efc84c41d7658a175aca40c8b612239690987524 100644
--- a/third_party/sqlite/src/src/mem1.c
+++ b/third_party/sqlite/src/src/mem1.c
@@ -125,7 +125,9 @@ static malloc_zone_t* _sqliteZone_;
 */
 static void *sqlite3MemMalloc(int nByte){
 #ifdef SQLITE_MALLOCSIZE
-  void *p = SQLITE_MALLOC( nByte );
+  void *p;
+  testcase( ROUND8(nByte)==nByte );
+  p = SQLITE_MALLOC( nByte );
   if( p==0 ){
     testcase( sqlite3GlobalConfig.xLog!=0 );
     sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte);
@@ -134,7 +136,7 @@ static void *sqlite3MemMalloc(int nByte){
 #else
   sqlite3_int64 *p;
   assert( nByte>0 );
-  nByte = ROUND8(nByte);
+  testcase( ROUND8(nByte)!=nByte );
   p = SQLITE_MALLOC( nByte+8 );
   if( p ){
     p[0] = nByte;