[Bug c++/28986] Failure to diagnose overflow in constant expression

["manu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #9 from manu at gcc dot gnu dot org  2007-01-07 23:40 -------
Subject: Bug 28986

Author: manu
Date: Sun Jan  7 23:39:55 2007
New Revision: 120558

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=120558
Log:
2007-01-07  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR c++/28986
cp/
        * typeck.c (build_binary_op): Call overflow_warning if
        TREE_OVERFLOW_P is true for the result and not for any of the
        operands.

testsuite/
        * g++.dg/conversion/nullptr1.C: Added overflow warning.
        * g++.dg/warn/overflow-warn-1.C: New.
        * g++.dg/warn/overflow-warn-3.C: New.
        * g++.dg/warn/overflow-warn-4.C: New.
        * g++.dg/warn/overflow-warn-5.C: New.
        * g++.dg/warn/overflow-warn-6.C: New.
        * g++.dg/warn/Woverflow-1.C: New.
        * g++.dg/warn/Woverflow-2.C: New.
        * g++.dg/warn/Woverflow-3.C: New.
        * g++.dg/warn/multiple-overflow-warn-2.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Woverflow-1.C
    trunk/gcc/testsuite/g++.dg/warn/Woverflow-2.C
    trunk/gcc/testsuite/g++.dg/warn/Woverflow-3.C
    trunk/gcc/testsuite/g++.dg/warn/multiple-overflow-warn-2.C
    trunk/gcc/testsuite/g++.dg/warn/overflow-warn-1.C
    trunk/gcc/testsuite/g++.dg/warn/overflow-warn-3.C
    trunk/gcc/testsuite/g++.dg/warn/overflow-warn-4.C
    trunk/gcc/testsuite/g++.dg/warn/overflow-warn-5.C
    trunk/gcc/testsuite/g++.dg/warn/overflow-warn-6.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/typeck.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/conversion/nullptr1.C


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28986