/c-family

[pf3gnuchains/gcc-fork.git] / gcc / c-family / c-opts.c

diff --git a/gcc/c-family/c-opts.c b/gcc/c-family/c-opts.c
index 6869d5c..14e4933 100644 (file)
--- a/gcc/c-family/c-opts.c
+++ b/gcc/c-family/c-opts.c
@@ -406,6 +406,7 @@ c_common_handle_option (size_t scode, const char *arg, int value,
          warn_reorder = value;
           warn_cxx0x_compat = value;
           warn_delnonvdtor = value;
+         warn_narrowing = value;
        }
 
       cpp_opts->warn_trigraphs = value;
@@ -436,6 +437,10 @@ c_common_handle_option (size_t scode, const char *arg, int value,
       cpp_opts->warn_cxx_operator_names = value;
       break;
 
+    case OPT_Wc__0x_compat:
+      warn_narrowing = value;
+      break;
+
     case OPT_Wdeprecated:
       cpp_opts->cpp_warn_deprecated = value;
       break;
@@ -997,10 +1002,17 @@ c_common_post_options (const char **pfilename)
   if (warn_implicit_function_declaration == -1)
     warn_implicit_function_declaration = flag_isoc99;
 
-  /* If we're allowing C++0x constructs, don't warn about C++0x
-     compatibility problems.  */
   if (cxx_dialect == cxx0x)
-    warn_cxx0x_compat = 0;
+    {
+      /* If we're allowing C++0x constructs, don't warn about C++98
+        identifiers which are keywords in C++0x.  */
+      warn_cxx0x_compat = 0;
+
+      if (warn_narrowing == -1)
+       warn_narrowing = 1;
+    }
+  else if (warn_narrowing == -1)
+    warn_narrowing = 0;
 
   if (flag_preprocess_only)
     {