We print "[-Wfoo]" after a warning that was enabled by the -Wfoo option, which is pretty clear. But for warnings that have no -W option we just print "[enabled by default]", which leads to the question of _what_ is enabled by default. As shown by:
http://gcc.gnu.org/ml/gcc/2014-01/msg00234.html it invites the wrong interpretation for things like: warning: non-static data member initializers only available with -std=c++11 or -std=gnu++11 [enabled by default] IMO the natural assumption is that gnu++11 is enabled by default, which is how Lars also read it. There seemed to be support for using "warning enabled by default" instead, so this patch does that. Tested on x86_64-linux-gnu. OK to install? I'll post an Ada patch separately. Thanks, Richard gcc/ * opts.c (option_name): Use "warning enabled by default" rather than just "enabled by default". gcc/testsuite/ * gcc.dg/gomp/simd-clones-5.c: Update comment for new warning message. Index: gcc/opts.c =================================================================== --- gcc/opts.c 2014-02-09 12:07:06.237317560 +0000 +++ gcc/opts.c 2014-02-09 12:07:06.371318597 +0000 @@ -2222,7 +2222,7 @@ option_name (diagnostic_context *context if (context->warning_as_error_requested) return xstrdup (cl_options[OPT_Werror].opt_text); else - return xstrdup (_("enabled by default")); + return xstrdup (_("warning enabled by default")); } else return NULL; Index: gcc/testsuite/gcc.dg/gomp/simd-clones-5.c =================================================================== --- gcc/testsuite/gcc.dg/gomp/simd-clones-5.c 2014-02-09 12:07:06.237317560 +0000 +++ gcc/testsuite/gcc.dg/gomp/simd-clones-5.c 2014-02-09 12:07:06.371318597 +0000 @@ -3,7 +3,7 @@ /* ?? The -w above is to inhibit the following warning for now: a.c:2:6: warning: AVX vector argument without AVX enabled changes - the ABI [enabled by default]. */ + the ABI [warning enabled by default]. */ #pragma omp declare simd notinbranch simdlen(4) void foo (int *a)
