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* [Bug regex/1217] New: regcomp.c elicits uninitialized-variable warnings with GCC 4
@ 2005-08-20 0:05 eggert at gnu dot org
2005-08-20 0:06 ` [Bug regex/1217] " eggert at gnu dot org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: eggert at gnu dot org @ 2005-08-20 0:05 UTC (permalink / raw)
To: glibc-bugs-regex
regcomp.c contains code that elicits uninitialized-variable warnings with
GCC 4. The problem is that GCC isn't smart enough to see that when
duplicate_node returns REG_ESPACE, the uninitialized storage is not used.
I'll attach a straightforward patch that changes the signature of
duplicate_node to avoid the warnings. My impression is that the
patch also causes GCC to generate better code, but I haven't measured
this.
--
Summary: regcomp.c elicits uninitialized-variable warnings with
GCC 4
Product: glibc
Version: 2.3.5
Status: NEW
Severity: minor
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=1217
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* [Bug regex/1217] regcomp.c elicits uninitialized-variable warnings with GCC 4
2005-08-20 0:05 [Bug regex/1217] New: regcomp.c elicits uninitialized-variable warnings with GCC 4 eggert at gnu dot org
@ 2005-08-20 0:06 ` eggert at gnu dot org
2005-08-20 7:28 ` eggert at gnu dot org
2005-09-06 18:04 ` drepper at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: eggert at gnu dot org @ 2005-08-20 0:06 UTC (permalink / raw)
To: glibc-bugs-regex
------- Additional Comments From eggert at gnu dot org 2005-08-20 00:06 -------
Created an attachment (id=595)
--> (http://sources.redhat.com/bugzilla/attachment.cgi?id=595&action=view)
regcomp.c patch to avoid use of variables GCC 4 thinks are uninitialized
--
http://sources.redhat.com/bugzilla/show_bug.cgi?id=1217
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* [Bug regex/1217] regcomp.c elicits uninitialized-variable warnings with GCC 4
2005-08-20 0:05 [Bug regex/1217] New: regcomp.c elicits uninitialized-variable warnings with GCC 4 eggert at gnu dot org
2005-08-20 0:06 ` [Bug regex/1217] " eggert at gnu dot org
@ 2005-08-20 7:28 ` eggert at gnu dot org
2005-09-06 18:04 ` drepper at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: eggert at gnu dot org @ 2005-08-20 7:28 UTC (permalink / raw)
To: glibc-bugs-regex
--
What |Removed |Added
----------------------------------------------------------------------------
OtherBugsDependingO| |1220
nThis| |
http://sources.redhat.com/bugzilla/show_bug.cgi?id=1217
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* [Bug regex/1217] regcomp.c elicits uninitialized-variable warnings with GCC 4
2005-08-20 0:05 [Bug regex/1217] New: regcomp.c elicits uninitialized-variable warnings with GCC 4 eggert at gnu dot org
2005-08-20 0:06 ` [Bug regex/1217] " eggert at gnu dot org
2005-08-20 7:28 ` eggert at gnu dot org
@ 2005-09-06 18:04 ` drepper at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: drepper at redhat dot com @ 2005-09-06 18:04 UTC (permalink / raw)
To: glibc-bugs-regex
------- Additional Comments From drepper at redhat dot com 2005-09-06 18:04 -------
Applied to trunk.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://sourceware.org/bugzilla/show_bug.cgi?id=1217
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end of thread, other threads:[~2005-09-06 18:04 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2005-08-20 0:05 [Bug regex/1217] New: regcomp.c elicits uninitialized-variable warnings with GCC 4 eggert at gnu dot org
2005-08-20 0:06 ` [Bug regex/1217] " eggert at gnu dot org
2005-08-20 7:28 ` eggert at gnu dot org
2005-09-06 18:04 ` drepper at redhat dot com
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