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From: "valery_reznic at yahoo dot com" <sourceware-bugzilla@sourceware.org> To: glibc-bugs-regex@sources.redhat.com Subject: [Bug regex/14301] New: Regular expression wrong match with a number of groups Date: Wed, 27 Jun 2012 07:26:00 -0000 [thread overview] Message-ID: <bug-14301-132@http.sourceware.org/bugzilla/> (raw) http://sourceware.org/bugzilla/show_bug.cgi?id=14301 Bug #: 14301 Summary: Regular expression wrong match with a number of groups Product: glibc Version: 2.11 Status: NEW Severity: normal Priority: P2 Component: regex AssignedTo: unassigned@sourceware.org ReportedBy: valery_reznic@yahoo.com CC: drepper.fsp@gmail.com Classification: Unclassified Created attachment 6487 --> http://sourceware.org/bugzilla/attachment.cgi?id=6487 test program for bug demonstration I compile regular expression with REG_EXTENDED | REG_ICASE (see attached program) Then run it as following: (First parameter - regular expression, second - text to match) 1. ./r '[ ](4[0-9]{15})|(4[0-9]{12})[ ]' ' 4123456789012 ' - match 2. ./r '[ ](4[0-9]{15})|(4[0-9]{12})[ ]' 'r4123456789012' - no match 3. ./r '[ ](4[0-9]{15})|(4[0-9]{12})|(AAA)[ ]' 'r4123456789012' - match 4. ./r '[ ](4[0-9]{12})|(4[0-9]{15})|(AAA)[ ]' 'r4123456789012' - no-match 1. Match, as expected - second group (4[0-9]{12}) 2. No, match as expected. 3. Match, when should not be 4. Just for interest - swap second and first group 4[0-9]{12} and 4[0-9]{15} and all of sudden it works as expected. Attached program can be compiled with gcc -Wall r.c -o r I tested it on systems with following glibc versions: - 2.3.2 Fedora Core 1, both i386 and x86-64 - 2.11 Fedora 12 - x86-64 - 2.5 CentOS release 5.6 (Final) - i386 -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
next reply other threads:[~2012-06-27 7:26 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-06-27 7:26 valery_reznic at yahoo dot com [this message] 2012-06-27 7:48 ` [Bug regex/14301] " schwab@linux-m68k.org 2012-06-27 8:16 ` valery_reznic at yahoo dot com 2012-06-27 8:33 ` fweimer at redhat dot com 2012-06-27 8:51 ` valery_reznic at yahoo dot com 2014-06-13 14:58 ` fweimer at redhat dot com
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