1 files changed, 2 insertions, 1 deletions
diff --git a/src/os_unix.c b/src/os_unix.c
index 3745827f6..d86a4a745 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -5746,7 +5746,8 @@ static int unixOpen(
     }
     fd = robust_open(zName, openFlags, openMode);
     OSTRACE(("OPENX   %-3d %s 0%o\n", fd, zName, openFlags));
-    if( fd<0 && errno!=EISDIR && isReadWrite && !isExclusive ){
+    assert( !isExclusive || (openFlags & O_CREAT)!=0 );
+    if( fd<0 && errno!=EISDIR && isReadWrite ){
       /* Failed to open the file for read/write access. Try read-only. */
       flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
       openFlags &= ~(O_RDWR|O_CREAT);