Package: mathtex
Version: 1.03-1
Severity: important
Here is a patch for mathtex 1.03:
root@ct101:/home/latex/public_html/mathtex/123# diff -u mathtex.c patched.c
--- mathtex.c 2010-06-11 23:34:25.000000000 +0000
+++ patched.c 2011-04-01 14:28:44.000000000 +0000
@@ -3630,7 +3630,7 @@
shift from left or right to accommodate replacement of its nfirst chars by to
-------------------------------------------------------------------------- */
if ( tolen < nfirst ) /* shift left is easy */
- strcpy(from,from+nshift); /* because memory doesn't overlap */
+ memmove(from,from+nshift,strlen(from+nshift)+1);
if ( tolen > nfirst ) /* need more room at start of from */
{ char *pfrom = from+strlen(from); /* ptr to null terminating from */
for ( ; pfrom>=from; pfrom-- ) /* shift all chars including null */
What regards this line:
- strcpy(from,from+nshift); /* because memory doesn't overlap */
The memory overlaps, indeed. Strings `from` and `from+nshift` shares
strlen(from) - nshift common bytes!
Sometimes it may work (it worked on my Debian Lenny), but on Debian
Squeeze amd64 it produces malformed string as a result.
Using memmove fixes this problem.
+ memmove(from,from+nshift,strlen(from+nshift)+1);
-- System Information:
Debian Release: 6.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-openvz-amd64 (SMP w/8 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Versions of packages mathtex depends on:
ii dvipng 1.13-1 convert DVI files to PNG graphics
ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib
ii texlive 2009-11 TeX Live: A decent selection of th
mathtex recommends no packages.
mathtex suggests no packages.
-- no debconf information
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