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* [Bug tree-optimization/65178] New: incorrect -Wmaybe-uninitialized when nested loops @ 2015-02-23 16:45 winter-gcc@bfw-online.de 2015-02-24 12:21 ` [Bug tree-optimization/65178] incorrect -Wmaybe-uninitialized when using " rguenth at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: winter-gcc@bfw-online.de @ 2015-02-23 16:45 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65178 Bug ID: 65178 Summary: incorrect -Wmaybe-uninitialized when nested loops Product: gcc Version: 4.9.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: winter-gcc@bfw-online.de Created attachment 34845 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34845&action=edit Testcase This program incorrectly warns about an uninitialized variable. If one is to delete the innermost loop definition (leaving the loop body intact), the warning would not be displayed. --- main.c 2015-02-23 16:48:56.027694790 +0100 +++ main2.c 2015-02-23 16:49:13.585385504 +0100 @@ -10,7 +10,7 @@ { char *buf; char *p = 0; for (bool a = true;; a = false) - { for (char *s = c; *s; ++s) + { // for (char *s = c; *s; ++s) { if (!a) *p = 'a'; } if (!a) break; ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/65178] incorrect -Wmaybe-uninitialized when using nested loops 2015-02-23 16:45 [Bug tree-optimization/65178] New: incorrect -Wmaybe-uninitialized when nested loops winter-gcc@bfw-online.de @ 2015-02-24 12:21 ` rguenth at gcc dot gnu.org 2015-02-25 10:28 ` winter-gcc@bfw-online.de ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2015-02-24 12:21 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65178 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Depends on| |63278 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Related to PR63278. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/65178] incorrect -Wmaybe-uninitialized when using nested loops 2015-02-23 16:45 [Bug tree-optimization/65178] New: incorrect -Wmaybe-uninitialized when nested loops winter-gcc@bfw-online.de 2015-02-24 12:21 ` [Bug tree-optimization/65178] incorrect -Wmaybe-uninitialized when using " rguenth at gcc dot gnu.org @ 2015-02-25 10:28 ` winter-gcc@bfw-online.de 2021-07-22 17:51 ` cvs-commit at gcc dot gnu.org 2021-07-22 17:52 ` msebor at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: winter-gcc@bfw-online.de @ 2015-02-25 10:28 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65178 Leon Winter <winter-gcc@bfw-online.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Version|4.9.1 |5.0 --- Comment #3 from Leon Winter <winter-gcc@bfw-online.de> --- Like, Manuel mentioned already, this in fact applies to gcc-5.0 as I was mistaken on the version (executing gcc -v on the wrong machine) ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/65178] incorrect -Wmaybe-uninitialized when using nested loops 2015-02-23 16:45 [Bug tree-optimization/65178] New: incorrect -Wmaybe-uninitialized when nested loops winter-gcc@bfw-online.de 2015-02-24 12:21 ` [Bug tree-optimization/65178] incorrect -Wmaybe-uninitialized when using " rguenth at gcc dot gnu.org 2015-02-25 10:28 ` winter-gcc@bfw-online.de @ 2021-07-22 17:51 ` cvs-commit at gcc dot gnu.org 2021-07-22 17:52 ` msebor at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2021-07-22 17:51 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65178 --- Comment #17 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Martin Sebor <msebor@gcc.gnu.org>: https://gcc.gnu.org/g:b362d7947b37059fdb6de62145fa5146258dd58f commit r12-2475-gb362d7947b37059fdb6de62145fa5146258dd58f Author: Martin Sebor <msebor@redhat.com> Date: Thu Jul 22 11:49:33 2021 -0600 Add new test for PR65178. gcc/testsuite/ChangeLog: PR tree-optimization/65178 * gcc.dg/uninit-pr65178.c: New test. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/65178] incorrect -Wmaybe-uninitialized when using nested loops 2015-02-23 16:45 [Bug tree-optimization/65178] New: incorrect -Wmaybe-uninitialized when nested loops winter-gcc@bfw-online.de ` (2 preceding siblings ...) 2021-07-22 17:51 ` cvs-commit at gcc dot gnu.org @ 2021-07-22 17:52 ` msebor at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: msebor at gcc dot gnu.org @ 2021-07-22 17:52 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65178 Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Target Milestone|--- |7.0 Resolution|--- |FIXED CC| |msebor at gcc dot gnu.org --- Comment #18 from Martin Sebor <msebor at gcc dot gnu.org> --- Bisection points to r246021 as the fix. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-07-22 17:52 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-02-23 16:45 [Bug tree-optimization/65178] New: incorrect -Wmaybe-uninitialized when nested loops winter-gcc@bfw-online.de 2015-02-24 12:21 ` [Bug tree-optimization/65178] incorrect -Wmaybe-uninitialized when using " rguenth at gcc dot gnu.org 2015-02-25 10:28 ` winter-gcc@bfw-online.de 2021-07-22 17:51 ` cvs-commit at gcc dot gnu.org 2021-07-22 17:52 ` msebor at gcc dot gnu.org
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