PR libstdc++/11953

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

diff --git a/gcc/c-opts.c b/gcc/c-opts.c
index 36026fd..dcb68a1 100644 (file)
--- a/gcc/c-opts.c
+++ b/gcc/c-opts.c
@@ -1163,14 +1163,26 @@ c_common_parse_file (int set_yydebug)
 {
   unsigned int i;
 
-  /* Enable parser debugging, if requested and we can.  If requested
-     and we can't, notify the user.  */
-#if YYDEBUG != 0
-  yydebug = set_yydebug;
-#else
   if (set_yydebug)
-    warning (0, "YYDEBUG was not defined at build time, -dy ignored");
-#endif
+    switch (c_language)
+      {
+      case clk_c:
+       warning(0, "The C parser does not support -dy, option ignored");
+       break;
+      case clk_objc:
+       warning(0,
+               "The Objective-C parser does not support -dy, option ignored");
+       break;
+      case clk_cxx:
+       warning(0, "The C++ parser does not support -dy, option ignored");
+       break;
+      case clk_objcxx:
+       warning(0,
+           "The Objective-C++ parser does not support -dy, option ignored");
+       break;
+      default:
+       gcc_unreachable ();
+    }
 
   i = 0;
   for (;;)