Added the tool/warnings-clang.sh script. Changes so that there are no

warnings with either gcc or clang even including FTS4 and RTREE and
both with and without SQLITE_THREADSAFE=0.

FossilOrigin-Name: 39408702a989f907261c298bf0947f3e68bd10fe

1 files changed, 2 insertions, 2 deletions

diff --git a/src/backup.c b/src/backup.c
index 411a9b8d6..893a40e4d 100644
--- a/src/backup.c
+++ b/src/backup.c
@@ -543,14 +543,14 @@ int sqlite3_backup_step(sqlite3_backup *p, int nPage){
 */
 int sqlite3_backup_finish(sqlite3_backup *p){
   sqlite3_backup **pp;                 /* Ptr to head of pagers backup list */
-  sqlite3_mutex *mutex;                /* Mutex to protect source database */
+  MUTEX_LOGIC( sqlite3_mutex *mutex; ) /* Mutex to protect source database */
   int rc;                              /* Value to return */
 
   /* Enter the mutexes */
   if( p==0 ) return SQLITE_OK;
   sqlite3_mutex_enter(p->pSrcDb->mutex);
   sqlite3BtreeEnter(p->pSrc);
-  mutex = p->pSrcDb->mutex;
+  MUTEX_LOGIC( mutex = p->pSrcDb->mutex; )
   if( p->pDestDb ){
     sqlite3_mutex_enter(p->pDestDb->mutex);
   }