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http://bugs.exim.org/show_bug.cgi?id=1236
Philip Hazel <ph10@???> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #2 from Philip Hazel <ph10@???> 2012-04-21 19:13:20 ---
Thank you for the nice clear test case. I have fixed the bug in pcre_exec.c
(just a few characters!) and committed the patched file (SVN 963). I have also
updated the test system and the tests so that this error (if it happens again)
will be picked up by valgrind. The trivial patch that fixes the bug is this:
--- pcre_exec.c.ORIG 2012-04-21 19:10:55.000000000 +0100
+++ pcre_exec.c 2012-04-21 19:11:12.000000000 +0100
@@ -6887,7 +6887,7 @@
{
register int *iptr, *iend;
int resetcount = 2 + re->top_bracket * 2;
- if (resetcount > offsetcount) resetcount = ocount;
+ if (resetcount > offsetcount) resetcount = offsetcount;
iptr = offsets + md->end_offset_top;
iend = offsets + resetcount;
while (iptr < iend) *iptr++ = -1;
The bug was provoked by having back references that were greater than the
ovector could hold, and an unused highest capturing parens.
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