* decl2.c (grokbitfield): Diagnose non-integral width.

From-SVN: r164321

gcc/cp/ChangeLog

 2010-09-15  Jason Merrill  <jason@redhat.com>
 
+	* decl2.c (grokbitfield): Diagnose non-integral width.
+
 	* call.c (convert_like_real): Use the underlying type of the
 	reference for the temporary.
 

gcc/cp/decl2.c

@@ -1066,6 +1066,10 @@ grokbitfield (const cp_declarator *declarator,
 
   if (width != error_mark_node)
     {
+      /* The width must be an integer type.  */
+      if (!INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P (TREE_TYPE (width)))
+	error ("width of bit-field %qD has non-integral type %qT", value,
+	       TREE_TYPE (width));
       constant_expression_warning (width);
       DECL_INITIAL (value) = width;
       SET_DECL_C_BIT_FIELD (value);

gcc/testsuite/ChangeLog

+2010-09-15  Jason Merrill  <jason@redhat.com>
+
+	* g++.dg/cpp0x/scoped_enum2.C: New.
+
 2010-09-15  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc.c-torture/compile/20100915-1.c: New test.

gcc/testsuite/g++.dg/cpp0x/scoped_enum2.C

+// { dg-options -std=c++0x }
+
+enum class E { e = 10 };
+enum E2 { e2 = 10 };
+
+struct C {
+  int arr[E::e];    // { dg-error "non-integral type" }
+  int arr2[E2::e2]; // OK
+  int i: E::e;	    // { dg-error "non-integral type" }
+  int i2: E2::e2;   // OK
+};