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* [Bug regex/11053] New: Segfault on invalid backreference
@ 2009-12-04 19:36 bonzini at gnu dot org
2010-04-05 19:39 ` [Bug regex/11053] " drepper at redhat dot com
2010-04-09 17:46 ` [Bug regex/11053] Wrong results with backreferences bonzini at gnu dot org
0 siblings, 2 replies; 3+ messages in thread
From: bonzini at gnu dot org @ 2009-12-04 19:36 UTC (permalink / raw)
To: glibc-bugs-regex
$ echo 87654321 | \
grep -E -e '^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?).?\9\8\7\6\5\4\3\2\1$'
Segmentation fault
Will work on a C reproducer soon.
--
Summary: Segfault on invalid backreference
Product: glibc
Version: 2.11
Status: NEW
Severity: normal
Priority: P2
Component: regex
AssignedTo: drepper at redhat dot com
ReportedBy: bonzini at gnu dot org
CC: glibc-bugs-regex at sources dot redhat dot com,glibc-
bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=11053
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^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug regex/11053] Segfault on invalid backreference 2009-12-04 19:36 [Bug regex/11053] New: Segfault on invalid backreference bonzini at gnu dot org @ 2010-04-05 19:39 ` drepper at redhat dot com 2010-04-09 17:46 ` [Bug regex/11053] Wrong results with backreferences bonzini at gnu dot org 1 sibling, 0 replies; 3+ messages in thread From: drepper at redhat dot com @ 2010-04-05 19:39 UTC (permalink / raw) To: glibc-bugs-regex -- What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|drepper at redhat dot com |bonzini at gnu dot org Status|NEW |ASSIGNED http://sourceware.org/bugzilla/show_bug.cgi?id=11053 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug regex/11053] Wrong results with backreferences 2009-12-04 19:36 [Bug regex/11053] New: Segfault on invalid backreference bonzini at gnu dot org 2010-04-05 19:39 ` [Bug regex/11053] " drepper at redhat dot com @ 2010-04-09 17:46 ` bonzini at gnu dot org 1 sibling, 0 replies; 3+ messages in thread From: bonzini at gnu dot org @ 2010-04-09 17:46 UTC (permalink / raw) To: glibc-bugs-regex ------- Additional Comments From bonzini at gnu dot org 2010-04-09 17:46 ------- Minimized testcases (same regex): $ echo 8 | grep -E -e "$regex" 8 # >>> okay $ echo 87 | grep -E -e "$regex" Segmentation fault $ echo 88 | grep -E -e "$regex" 88 # >>> okay $ echo 887 | grep -E -e "$regex" Segmentation fault Also, everything I tried to feed that is of length 9 or higher and should not match, gives either a false positive or a segfault: $ echo 987654321 | grep -E -e "$regex" 887654321 $ echo 484635532 | grep -E -e "$regex" 484635532 $ echo 0123454321 | grep -E -e "$regex" Segmentation fault $ echo 0000123454321 | grep -E -e "$regex" Segmentation fault -- What |Removed |Added ---------------------------------------------------------------------------- Summary|Segfault on invalid |Wrong results with |backreference |backreferences http://sourceware.org/bugzilla/show_bug.cgi?id=11053 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2010-04-09 17:46 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2009-12-04 19:36 [Bug regex/11053] New: Segfault on invalid backreference bonzini at gnu dot org 2010-04-05 19:39 ` [Bug regex/11053] " drepper at redhat dot com 2010-04-09 17:46 ` [Bug regex/11053] Wrong results with backreferences bonzini at gnu dot org
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