1 files changed, 11 insertions, 4 deletions
diff --git a/lib/libsqlite3/src/backup.c b/lib/libsqlite3/src/backup.c
index 81c8b5c5f4f..94e578d9df0 100644
--- a/lib/libsqlite3/src/backup.c
+++ b/lib/libsqlite3/src/backup.c
@@ -685,9 +685,13 @@ int sqlite3_backup_pagecount(sqlite3_backup *p){
 ** corresponding to the source database is held when this function is
 ** called.
 */
-void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, const u8 *aData){
-  sqlite3_backup *p;                   /* Iterator variable */
-  for(p=pBackup; p; p=p->pNext){
+static SQLITE_NOINLINE void backupUpdate(
+  sqlite3_backup *p,
+  Pgno iPage,
+  const u8 *aData
+){
+  assert( p!=0 );
+  do{
     assert( sqlite3_mutex_held(p->pSrc->pBt->mutex) );
     if( !isFatalError(p->rc) && iPage<p->iNext ){
       /* The backup process p has already copied page iPage. But now it
@@ -704,7 +708,10 @@ void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, const u8 *aData){
         p->rc = rc;
       }
     }
-  }
+  }while( (p = p->pNext)!=0 );
+}
+void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, const u8 *aData){
+  if( pBackup ) backupUpdate(pBackup, iPage, aData);
 }
 
 /*