[Bug c++/34198] -Wconversion gives apparent erroneous warning with g++ 4.3-20071109

[jakub 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


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34198