Bug#291438: tetex-bin: dvipdfm segfaults when used with hyperref and hypertex

[Prabhu Ramachandran <prabhu_r@users.sf.net>]

>>>>> "FK" == Frank Küster <frank@debian.org> writes:

    FK> uwe@steinmann.cx (Uwe Steinmann) wrote:
    >> On Fri, Jan 21, 2005 at 03:22:39PM +0100, Frank Küster wrote:
    >>> Prabhu Ramachandran <prabhu_r@users.sf.net> wrote:
    >>> > Package: tetex-bin Version: 2.0.2-25 Severity: important
    >>> > dvipdfm segfaults on the following trivial LaTeX file.

    FK> I also did not get a segfault in my i386 sarge chroot. I'm
    FK> helpless - how can one debug this? The only idea I have, since
    FK> Prabhu seems to be familiar with gdb, would be to recompile
    FK> dvipdfm without stripping and optimising. I think this should
    FK> be easily possible in the following way:

[...]

OK, I've found the bug.  Basically, the asn_date function in
texk/dvipdfm/pdfdoc.c was writing to a string but did not allocate
enough memory for the string before writing to it.  Attached is a
trivial patch for the file texk/dvipdfm/pdfdoc.c.

With this patch dvipdfm works fine for me and does not segfault
anymore.

HTH.
prabhu

--- pdfdoc.c.orig	2005-01-22 16:12:30.000000000 +0530
+++ pdfdoc.c	2005-01-22 16:12:38.000000000 +0530
@@ -239,7 +239,7 @@
      #define timezone 0l
 #endif /* TM_GM_TOFF */
 #endif /* HAVE_TIMEZONE */
-  static char date_string[24];
+  static char date_string[32];
   time_t current_time;
   struct tm *bd_time;
   if (debug) {