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[Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array)
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 23 Aug 2011 15:53:23 +0000
- Subject: [Bug c++/50158] [4.7 Regression] invalid 'variable set but not used' warning (boolean used as an index to an array)
- Auto-submitted: auto-generated
- References: <bug-50158-4@http.gcc.gnu.org/bugzilla/>
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