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[Bug c++/34198] -Wconversion gives apparent erroneous warning with g++ 4.3-20071109
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 23 Nov 2007 13:39:55 -0000
- Subject: [Bug c++/34198] -Wconversion gives apparent erroneous warning with g++ 4.3-20071109
- References: <bug-34198-15412@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #10 from jakub at gcc dot gnu dot org 2007-11-23 13:39 -------
Subject: Bug 34198
Author: jakub
Date: Fri Nov 23 13:39:44 2007
New Revision: 130377
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130377
Log:
PR c++/34198
* c-common.c (conversion_warning): For INTEGER_TYPE to
INTEGER_TYPE conversions call get_narrower on expr to avoid
spurious warnings from binop shortening or when the implicit
conversion can't change the value.
* gcc.dg/Wconversion-5.c: New test.
* g++.dg/Wconversion3.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wconversion3.C
trunk/gcc/testsuite/gcc.dg/Wconversion-5.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-common.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34198