Re: Freeze with Emacs 21.1 and CVS Gnus

[Andreas Schwab]

Richard Stallman <rms@gnu.org> writes:

|>     >From the backtrace (see below), my wild guess is that Gnus tries to 
|>     display the article name in the mode line, and since the name includes a 
|>     percent character, it tries to interpret that as a special mode-line 
|>     element.
|> 
|> If that is true, it could be an Emacs bug as well as a Gnus bug.
|> Giving Emacs an absurd %-spec in the mode-line-format would give
|> absurd output in the mode line, but it shouldn't hang things.

display_mode_element could read beyond the end of the string if the last
character was a '%', although I could not reproduce any bad behaviour.
This patch should fix that:

2001-12-07  Andreas Schwab  <schwab@suse.de>

        * xdisp.c (display_mode_element): Don't read past end of string if
        it ends with '%'.

--- xdisp.c.~1.711.~    Tue Dec  4 11:23:07 2001
+++ xdisp.c     Fri Dec  7 10:16:22 2001
@@ -13584,6 +13584,8 @@
                          }
                      }
                  }
+               else /* c == 0 */
+                 break;
              }
          }
       }


Andreas.

-- 
Andreas Schwab                                  "And now for something
Andreas.Schwab@suse.de                          completely different."
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