https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83773
Roland Illig <roland.illig at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |roland.illig at gmx dot de
--- Comment #4 from Roland Illig <roland.illig at gmx dot de> ---
Having this option would help NetBSD's lint(1), which currently uses the
-Wp,-CC option to preserve comments.
>From https://gnats.netbsd.org/22515:
> $ cat > lint-define.c
> #define LINTFOO 1 /* comment */
> #define LINTFOO 1 /* different */
> int foo;
>
> $ gcc -Wall -E lint-define.c
>
> $ gcc -Wall -E -Wp,-CC lint-define.c
> lint-define.c:2: warning: `LINTFOO' redefined
> lint-define.c:1: warning: this is the location of the previous definition
Without an option like Clang's -Wmacro-redefined, another possible fix for this
scenario would be to ignore differences in comment text, in _cpp_equiv_tokens.
These only occur with the options -C or -CC and thus do not affect the default
behavior.
