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bug#27838: grep error: "regexec.c:1375: pop_fail_stack: Assertion `num >
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From: |
Jacek Wielemborek |
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Subject: |
bug#27838: grep error: "regexec.c:1375: pop_fail_stack: Assertion `num >= 0' failed." |
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Date: |
Wed, 26 Jul 2017 16:53:07 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 |
Hi,
Try out the following test case, IIRC found with the aid of afl-fuzz:
grep -E -f <( echo
'fzJ7fymOjgqOjgkfMnt/KSgfVzN8pFyQKR8zfGR7pGuQKR8zfCh8Mnt/KSgfVzN8pFyQKR8zfGR7pGuQKR8zfGR7kCkoCx8zfDJ7fymOrQmOjgkfM3wkXDI='
| base64 -d ) /dev/null
grep: regexec.c:1375: pop_fail_stack: Assertion `num >= 0' failed.
I reported it once as on Fedora's Bugzilla, but got no reaction - in
that case it even triggered a segmentation fault.
Cheers,
d33tah
- bug#27838: grep error: "regexec.c:1375: pop_fail_stack: Assertion `num >= 0' failed.",
Jacek Wielemborek <=