From: Neil Booth Date: Tue, 2 Jul 2002 17:06:03 +0000 (+0000) Subject: cppinit.c (cpp_handle_option): Suppress warnings with an implicit "-w" for "-M" and... X-Git-Tag: releases/gcc-3.3.0~3990 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=49e7b251ee93b18e852eb2b4e328b1094edd93a4;p=thirdparty%2Fgcc.git cppinit.c (cpp_handle_option): Suppress warnings with an implicit "-w" for "-M" and "-MM". * cppinit.c (cpp_handle_option): Suppress warnings with an implicit "-w" for "-M" and "-MM". doc: * cppopts.texi: Update. testsuite: * gcc.dg/cpp/cmdlne-M.c: New test. From-SVN: r55185 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4a6723d888cb..654fd39e8633 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2002-07-02 Neil Booth + + * cppinit.c (cpp_handle_option): Suppress warnings with an + implicit "-w" for "-M" and "-MM". + * doc/cppopts.texi: Update. + 2002-07-01 Roger Sayle * config/sh/sh.c (sh_media_init_builtins): Change use of poisoned diff --git a/gcc/doc/cppopts.texi b/gcc/doc/cppopts.texi index 7a2ce50cc3fc..3f1e98cd2017 100644 --- a/gcc/doc/cppopts.texi +++ b/gcc/doc/cppopts.texi @@ -178,7 +178,8 @@ rules you should explicitly specify the dependency output file with @env{DEPENDENCIES_OUTPUT} (@pxref{Environment Variables}). Debug output will still be sent to the regular output stream as normal. -Passing @option{-M} to the driver implies @option{-E}. +Passing @option{-M} to the driver implies @option{-E}, and suppresses +warnings with an implicit @option{-w}. @item -MM @opindex MM diff --git a/gcc/testsuite/gcc.dg/cpp/cmdlne-M.c b/gcc/testsuite/gcc.dg/cpp/cmdlne-M.c new file mode 100644 index 000000000000..4eb6407cdd0c --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/cmdlne-M.c @@ -0,0 +1,8 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. */ + +/* { dg-do preprocess } */ +/* { dg-options "-M" } */ + +/* Test that dependency output suppresses warnings by implying -w. */ + +#warning bogus /* { dg-bogus "warning" "warning not suppressed" } */