From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sun, 26 Jul 2015 20:23:08 +0000 (-0700)
Subject: * src/ftfont.c (ftfont_close): Add comment re Bug#20890.
X-Git-Tag: emacs-25.0.90~1429
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=075f8d9626dca1e14ca1772d25f477e13045adf4;p=emacs.git

* src/ftfont.c (ftfont_close): Add comment re Bug#20890.
---

diff --git a/src/ftfont.c b/src/ftfont.c
index b37b404c5ef..41d99dffeb6 100644
--- a/src/ftfont.c
+++ b/src/ftfont.c
@@ -1315,6 +1315,10 @@ ftfont_open (struct frame *f, Lisp_Object entity, int pixel_size)
 static void
 ftfont_close (struct font *font)
 {
+  /* FIXME: Although this function can be called while garbage-collecting,
+     the function assumes that Lisp data structures are properly-formed.
+     This invalid assumption can lead to core dumps (Bug#20890).  */
+
   struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
   Lisp_Object val, cache;