[Bug c++/50012] [4.5/4.6/4.7 Regression] C++ front end misses -Wsign-compare warnings when extraneous parentheses are present

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50012

--- Comment #8 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2012-01-14 00:22:21 UTC ---
Author: ian
Date: Sat Jan 14 00:22:14 2012
New Revision: 183178

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183178
Log:
gcc/:
    PR c++/50012
    * tree.h (TYPE_QUALS): Add cast to int.
    (TYPE_QUALS_NO_ADDR_SPACE): Likewise.
gcc/cp:
    PR c++/50012
    * typeck.c (enum_cast_to_int): New static function.
    (cp_build_binary_op): When handling warn_sign_compare, don't test
    for TREE_NO_WARNING.  Do call enum_cast_to_int.
    * call.c (avoid_sign_compare_warnings): Remove static function.
    (build_new_op_1): Don't call avoid_sign_compare_warnings.
gcc/testsuite/:
    PR c++/50012
    * g++.dg/warn/Wsign-compare-4.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Wsign-compare-4.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/cp/typeck.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree.h