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[Bug regex/1227] New: regexec portability bug: code assumes reg_errcode_t is signed
- From: "eggert at gnu dot org" <sourceware-bugzilla at sources dot redhat dot com>
- To: glibc-bugs at sources dot redhat dot com
- Date: 21 Aug 2005 04:58:49 -0000
- Subject: [Bug regex/1227] New: regexec portability bug: code assumes reg_errcode_t is signed
- Reply-to: sourceware-bugzilla at sources dot redhat dot com
There's a portability bug in sift_states_bkref. The code assumes that
reg_errcode_t is a signed type that can represent -1, but this is not
necessarily true if _XOPEN_SOURCE is not defined, because in that case
reg_errcode_t is an enumerated type containing only nonnegative values,
and the C standard allows such types to be unsigned.
This problem was reported by Sam Steingold in
<http://lists.gnu.org/archive/html/bug-gnulib/2005-08/msg00007.html>.
I'll attach a patch.
--
Summary: regexec portability bug: code assumes reg_errcode_t is
signed
Product: glibc
Version: 2.3.5
Status: NEW
Severity: normal
Priority: P2
Component: regex
AssignedTo: gotom at debian dot or dot jp
ReportedBy: eggert at gnu dot org
CC: glibc-bugs-regex at sources dot redhat dot com,glibc-
bugs at sources dot redhat dot com
http://sources.redhat.com/bugzilla/show_bug.cgi?id=1227
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