* nsfont.m (ns_charset_covers): Don't abort if no bitmap.

Fixes: debbugs:11853

1 files changed, 5 insertions, 0 deletions

diff --git a/src/nsfont.m b/src/nsfont.m
index 7a456c4bb5d..7a44182a93e 100644
--- a/src/nsfont.m
+++ b/src/nsfont.m
@@ -271,6 +271,11 @@ ns_charset_covers(NSCharacterSet *set1, NSCharacterSet *set2, float pct)
     const unsigned short *bytes2 = [[set2 bitmapRepresentation] bytes];
     int i, off = 0, tot = 0;
 
+    /* Work around what appears to be a GNUstep bug.
+       See <http://bugs.gnu.org/11853>.  */
+    if (! (bytes1 && bytes2))
+      return NO;
+
     for (i=0; i<4096; i++, bytes1++, bytes2++)
         if (*bytes2)
           {