Date: Sun, 23 Nov 2025 11:06:02 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 291172] regexp.h routines behave differently for my program and in the base grep Message-ID: <bug-291172-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291172 Bug ID: 291172 Summary: regexp.h routines behave differently for my program and in the base grep Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: arrowd@FreeBSD.org Created attachment 265589 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=265589&action=edit Test program I have a little program that tries to match the "domain/foo" string against the "^domain/[a-z]\+$" regexp. For some reason it prints "regex doesn't match: domain/foo" for me. The strange thing is that the same regex works in grep: # cat input domain/foo # dtrace -q -n 'pid$target::regcomp:entry { printf("%s(m,\"%s\",%d)\n", probefunc, copyinstr(arg1), arg2); }' -c 'grep ^domain/[a-z]\+$ input' domain/foo regcomp(m,"^domain/[a-z]\+$",12) We can see that regcomp() gets called with exactly the same arguments as in my program, but for some reason the consecutive regexec() returns REG_NOMATCH in my case and 0 for grep. I should be missing something obvious, but I can't figure it. -- You are receiving this mail because: You are the assignee for the bug.home | help
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