https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64767
--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Author: mpolacek Date: Wed Jan 4 21:47:04 2017 New Revision: 244076 URL: https://gcc.gnu.org/viewcvs?rev=244076&root=gcc&view=rev Log: PR c++/64767 * c.opt (Wpointer-compare): New option. * c-parser.c (c_parser_postfix_expression): Mark zero character constants by setting original_type in c_expr. * c-typeck.c (parser_build_binary_op): Warn when a pointer is compared with a zero character constant. (char_type_p): New function. * typeck.c (cp_build_binary_op): Warn when a pointer is compared with a zero character literal. * doc/invoke.texi: Document -Wpointer-compare. * c-c++-common/Wpointer-compare-1.c: New test. Added: trunk/gcc/testsuite/c-c++-common/Wpointer-compare-1.c Modified: trunk/gcc/ChangeLog trunk/gcc/c-family/ChangeLog trunk/gcc/c-family/c.opt trunk/gcc/c/ChangeLog trunk/gcc/c/c-parser.c trunk/gcc/c/c-typeck.c trunk/gcc/cp/ChangeLog trunk/gcc/cp/typeck.c trunk/gcc/doc/invoke.texi trunk/gcc/testsuite/ChangeLog
