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* [Bug middle-end/44197] New: varpool SEGV
@ 2010-05-19 16:42 ams at gcc dot gnu dot org
2010-05-19 16:46 ` [Bug middle-end/44197] " ams at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: ams at gcc dot gnu dot org @ 2010-05-19 16:42 UTC (permalink / raw)
To: gcc-bugs
assemble_alias in varasm.c sets varpool->alias to 1, but fails to set
varpool->extra_name to anything.
This leads to trouble further down the line. In my case, varpool_remove_node
fails with a NULL-pointer exception.
This appears to be target/host independent. So far, the only work around I have
is to disable optimization.
Test case to follow ...
--
Summary: varpool SEGV
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: critical
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ams at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44197
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug middle-end/44197] varpool SEGV 2010-05-19 16:42 [Bug middle-end/44197] New: varpool SEGV ams at gcc dot gnu dot org @ 2010-05-19 16:46 ` ams at gcc dot gnu dot org 2010-05-19 16:47 ` ams at gcc dot gnu dot org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: ams at gcc dot gnu dot org @ 2010-05-19 16:46 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from ams at gcc dot gnu dot org 2010-05-19 16:46 ------- Created an attachment (id=20703) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20703&action=view) test case This test case is reduced from uClibc sources. To reproduce the bug: cc1 -fpreprocessed __C_ctype_b_10.i -O1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44197 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/44197] varpool SEGV 2010-05-19 16:42 [Bug middle-end/44197] New: varpool SEGV ams at gcc dot gnu dot org 2010-05-19 16:46 ` [Bug middle-end/44197] " ams at gcc dot gnu dot org @ 2010-05-19 16:47 ` ams at gcc dot gnu dot org 2010-05-19 21:57 ` [Bug middle-end/44197] [4.6 Regresssion] " hjl dot tools at gmail dot com ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: ams at gcc dot gnu dot org @ 2010-05-19 16:47 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from ams at gcc dot gnu dot org 2010-05-19 16:46 ------- Jeff, it was recommended that I add you as CC. Apologies if that was not appropriate. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44197 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/44197] [4.6 Regresssion] varpool SEGV 2010-05-19 16:42 [Bug middle-end/44197] New: varpool SEGV ams at gcc dot gnu dot org 2010-05-19 16:46 ` [Bug middle-end/44197] " ams at gcc dot gnu dot org 2010-05-19 16:47 ` ams at gcc dot gnu dot org @ 2010-05-19 21:57 ` hjl dot tools at gmail dot com 2010-05-20 14:58 ` hubicka at gcc dot gnu dot org 2010-06-24 11:26 ` jakub at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: hjl dot tools at gmail dot com @ 2010-05-19 21:57 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from hjl dot tools at gmail dot com 2010-05-19 21:57 ------- It is caused by revision 159321: http://gcc.gnu.org/ml/gcc-cvs/2010-05/msg00373.html -- hjl dot tools at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hubicka at gcc dot gnu dot | |org Summary|varpool SEGV |[4.6 Regresssion] varpool | |SEGV Target Milestone|--- |4.6.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44197 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/44197] [4.6 Regresssion] varpool SEGV 2010-05-19 16:42 [Bug middle-end/44197] New: varpool SEGV ams at gcc dot gnu dot org ` (2 preceding siblings ...) 2010-05-19 21:57 ` [Bug middle-end/44197] [4.6 Regresssion] " hjl dot tools at gmail dot com @ 2010-05-20 14:58 ` hubicka at gcc dot gnu dot org 2010-06-24 11:26 ` jakub at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: hubicka at gcc dot gnu dot org @ 2010-05-20 14:58 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from hubicka at gcc dot gnu dot org 2010-05-20 14:57 ------- Subject: Bug 44197 Author: hubicka Date: Thu May 20 14:57:27 2010 New Revision: 159629 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159629 Log: PR middle-end/44197 * varpool.c (varpool_remove_node): Handle in-varpool aliases. * gcc.c-torture/compile/pr44197.c: New file. Added: trunk/gcc/testsuite/gcc.c-torture/compile/pr44197.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/varpool.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44197 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug middle-end/44197] [4.6 Regresssion] varpool SEGV 2010-05-19 16:42 [Bug middle-end/44197] New: varpool SEGV ams at gcc dot gnu dot org ` (3 preceding siblings ...) 2010-05-20 14:58 ` hubicka at gcc dot gnu dot org @ 2010-06-24 11:26 ` jakub at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: jakub at gcc dot gnu dot org @ 2010-06-24 11:26 UTC (permalink / raw) To: gcc-bugs ------- Comment #5 from jakub at gcc dot gnu dot org 2010-06-24 11:25 ------- Fixed. -- jakub at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44197 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-06-24 11:26 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-05-19 16:42 [Bug middle-end/44197] New: varpool SEGV ams at gcc dot gnu dot org 2010-05-19 16:46 ` [Bug middle-end/44197] " ams at gcc dot gnu dot org 2010-05-19 16:47 ` ams at gcc dot gnu dot org 2010-05-19 21:57 ` [Bug middle-end/44197] [4.6 Regresssion] " hjl dot tools at gmail dot com 2010-05-20 14:58 ` hubicka at gcc dot gnu dot org 2010-06-24 11:26 ` jakub at gcc dot gnu dot org
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