Re: [PATCH] regex: don't deref NULL upon heap allocation failure

2014-07-12 Thread Jim Meyering
On Sat, Jul 12, 2014 at 4:50 PM, Jim Meyering wrote: > I was surprised to be able to provoke a segfault in grep. > Even more surprised to see that the flaw was in regcomp.c. > Here's the patch I'll push to gnulib. > I expect the same will go to glibc soon. FYI, I've filed the glibc bug here: http

[PATCH] regex: don't deref NULL upon heap allocation failure

2014-07-12 Thread Jim Meyering
Date: Sat, 12 Jul 2014 16:33:49 -0700 Subject: [PATCH] regex: don't deref NULL upon heap allocation failure * lib/regcomp.c (parse_dup_op): Handle duplicate_tree failure in one more place. To trigger the segfault, configure grep -with-included-regex, build it, and run these commands: ( ulimit