Mercurial > hg > octave-nkf > gnulib-hg
changeset 17725:d65323023063
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 -v 300000; echo a|src/grep -E a+++++++++++++++++++++ )
I discovered this while replying to a private report from
Jens Schleusener about excessive memory consumption by grep
when using a regular expression like the one above.
author | Jim Meyering <meyering@fb.com> |
---|---|
date | Sat, 12 Jul 2014 16:33:49 -0700 |
parents | 8526f2f0b117 |
children | 71758fd65b02 |
files | ChangeLog lib/regcomp.c |
diffstat | 2 files changed, 14 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,15 @@ +2014-07-12 Jim Meyering <meyering@fb.com> + + 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 -v 300000; echo a|src/grep -E a+++++++++++++++++++++ ) + I discovered this while replying to a private report from + Jens Schleusener about excessive memory consumption by grep + when using a regular expression like the one above. + 2014-07-11 Paul Eggert <eggert@cs.ucla.edu> regex: fix memory leak in compiler