[Bug preprocessor/55602] Does not generate Error message for redefined macros

[guojiufu at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55602

Jeff Guo <guojiufu at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|VERIFIED                    |CLOSED

--- Comment #5 from Jeff Guo <guojiufu at gmail dot com> 2012-12-26 02:26:34 UTC ---
using -pedantic-errors is helpful