c++: &enum::enumerator [PR101869]

We don't want to call build_offset_ref with an enum.

	PR c++/101869

gcc/cp/ChangeLog:

	* semantics.c (finish_qualified_id_expr): Don't try to build a
	pointer-to-member if the scope is an enumeration.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp0x/enum43.C: New test.

diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c
index d846a1bd8f0b185b01af1a2a5c67c336c34cd346..568f019fede5199c789bc72852240c2024f832dd 100644 (file)
--- a/gcc/cp/semantics.c
+++ b/gcc/cp/semantics.c
@@ -2143,7 +2143,8 @@ finish_qualified_id_expr (tree qualifying_class,
 
   /* If EXPR occurs as the operand of '&', use special handling that
      permits a pointer-to-member.  */
-  if (address_p && done)
+  if (address_p && done
+      && TREE_CODE (qualifying_class) != ENUMERAL_TYPE)
     {
       if (TREE_CODE (expr) == SCOPE_REF)
        expr = TREE_OPERAND (expr, 1);

diff --git a/gcc/testsuite/g++.dg/cpp0x/enum43.C b/gcc/testsuite/g++.dg/cpp0x/enum43.C
new file mode 100644 (file)
index 0000000..b2cd979
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/enum43.C
@@ -0,0 +1,11 @@
+// PR c++/101869
+
+enum E { A };
+E operator & (E e)
+{
+  return e;
+}
+E f(void)
+{
+    return &E::A;       // { dg-error "not a class" "" { target c++98_only } }
+}