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* [Bug c++/50158] New: [4.7 Regression] invalid 'variable set but not used' warning (boolean used as index to an array)
@ 2011-08-22 19:22 zsojka at seznam dot cz
2011-08-22 20:03 ` [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an " zsojka at seznam dot cz
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: zsojka at seznam dot cz @ 2011-08-22 19:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50158
Bug #: 50158
Summary: [4.7 Regression] invalid 'variable set but not used'
warning (boolean used as index to an array)
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 25080
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25080
reduced testcase
Compiler output:
$ gcc -Wunused-but-set-variable testcase.cpp -c
testcase.cpp: In function 'int foo(int)':
testcase.cpp:5:7: warning: variable 'array' set but not used
[-Wunused-but-set-variable]
The warning is give only when compiles as C++.
Tested revisions:
r177949 - fail
r173150 - OK
4.6.1 - OK
^ permalink raw reply [flat|nested] 7+ messages in thread* [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array) 2011-08-22 19:22 [Bug c++/50158] New: [4.7 Regression] invalid 'variable set but not used' warning (boolean used as index to an array) zsojka at seznam dot cz @ 2011-08-22 20:03 ` zsojka at seznam dot cz 2011-08-22 20:42 ` rguenth at gcc dot gnu.org ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: zsojka at seznam dot cz @ 2011-08-22 20:03 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50158 Zdenek Sojka <zsojka at seznam dot cz> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[4.7 Regression] invalid |[4.7 Regression] invalid |'variable set but not used' |'variable set but not used' |warning (boolean used as |warning (boolean used as an |index to an array) |index to an array) --- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> 2011-08-22 19:21:43 UTC --- > The warning is give only when compiles as C++. I am sorry for all the typos... ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array) 2011-08-22 19:22 [Bug c++/50158] New: [4.7 Regression] invalid 'variable set but not used' warning (boolean used as index to an array) zsojka at seznam dot cz 2011-08-22 20:03 ` [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an " zsojka at seznam dot cz @ 2011-08-22 20:42 ` rguenth at gcc dot gnu.org 2011-08-22 21:02 ` jakub at gcc dot gnu.org ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-08-22 20:42 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50158 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.7.0 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array) 2011-08-22 19:22 [Bug c++/50158] New: [4.7 Regression] invalid 'variable set but not used' warning (boolean used as index to an array) zsojka at seznam dot cz 2011-08-22 20:03 ` [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an " zsojka at seznam dot cz 2011-08-22 20:42 ` rguenth at gcc dot gnu.org @ 2011-08-22 21:02 ` jakub at gcc dot gnu.org 2011-08-23 12:52 ` jakub at gcc dot gnu.org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-22 21:02 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50158 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2011-08-22 CC| |jakub at gcc dot gnu.org Ever Confirmed|0 |1 --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-22 20:58:20 UTC --- Caused by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176072 ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array) 2011-08-22 19:22 [Bug c++/50158] New: [4.7 Regression] invalid 'variable set but not used' warning (boolean used as index to an array) zsojka at seznam dot cz ` (2 preceding siblings ...) 2011-08-22 21:02 ` jakub at gcc dot gnu.org @ 2011-08-23 12:52 ` jakub at gcc dot gnu.org 2011-08-23 15:55 ` jakub at gcc dot gnu.org 2011-08-23 16:03 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-23 12:52 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50158 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org |gnu.org | --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-23 12:48:15 UTC --- Created attachment 25082 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25082 gcc47-pr50158.patch Untested fix. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array) 2011-08-22 19:22 [Bug c++/50158] New: [4.7 Regression] invalid 'variable set but not used' warning (boolean used as index to an array) zsojka at seznam dot cz ` (3 preceding siblings ...) 2011-08-23 12:52 ` jakub at gcc dot gnu.org @ 2011-08-23 15:55 ` jakub at gcc dot gnu.org 2011-08-23 16:03 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-23 15:55 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50158 --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-23 15:53:23 UTC --- Author: jakub Date: Tue Aug 23 15:53:18 2011 New Revision: 177992 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177992 Log: PR c++/50158 * typeck.c (cp_build_modify_expr): Call mark_rvalue_use on rhs if it has side-effects and needs to be preevaluated. * g++.dg/warn/Wunused-var-16.C: New test. Added: trunk/gcc/testsuite/g++.dg/warn/Wunused-var-16.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/typeck.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array) 2011-08-22 19:22 [Bug c++/50158] New: [4.7 Regression] invalid 'variable set but not used' warning (boolean used as index to an array) zsojka at seznam dot cz ` (4 preceding siblings ...) 2011-08-23 15:55 ` jakub at gcc dot gnu.org @ 2011-08-23 16:03 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-23 16:03 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50158 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-23 15:57:36 UTC --- Fixed. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2011-08-23 15:57 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-08-22 19:22 [Bug c++/50158] New: [4.7 Regression] invalid 'variable set but not used' warning (boolean used as index to an array) zsojka at seznam dot cz 2011-08-22 20:03 ` [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an " zsojka at seznam dot cz 2011-08-22 20:42 ` rguenth at gcc dot gnu.org 2011-08-22 21:02 ` jakub at gcc dot gnu.org 2011-08-23 12:52 ` jakub at gcc dot gnu.org 2011-08-23 15:55 ` jakub at gcc dot gnu.org 2011-08-23 16:03 ` jakub at gcc dot gnu.org
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