./:

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

diff --git a/gcc/c-decl.c b/gcc/c-decl.c
index 4e48bac..57cbd28 100644 (file)
--- a/gcc/c-decl.c
+++ b/gcc/c-decl.c
@@ -5875,6 +5875,19 @@ grokdeclarator (const struct c_declarator *declarator,
      name of a variable.  Thus, if it's known before this, die horribly.  */
     gcc_assert (!DECL_ASSEMBLER_NAME_SET_P (decl));
 
+    if (warn_cxx_compat
+       && TREE_CODE (decl) == VAR_DECL
+       && TREE_PUBLIC (decl)
+       && TREE_STATIC (decl)
+       && (TREE_CODE (TREE_TYPE (decl)) == RECORD_TYPE
+           || TREE_CODE (TREE_TYPE (decl)) == UNION_TYPE
+           || TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE)
+       && TYPE_NAME (TREE_TYPE (decl)) == NULL_TREE)
+      warning_at (DECL_SOURCE_LOCATION (decl), OPT_Wc___compat,
+                 ("non-local variable %qD with anonymous type is "
+                  "questionable in C++"),
+                 decl);
+
     return decl;
   }
 }