If we see an enum as a scope for a declarator-id, we should avoid
setting ctype in the first place as it can't possibly be right.
Tested x86_64-pc-linux-gnu, applying to trunk.
commit 5800b6d699b10f0c15355b8f37fa9beb7957ea72
Author: Jason Merrill <ja...@redhat.com>
Date: Sun Jun 19 22:38:46 2011 -0400
PR c++/47635
* decl.c (grokdeclarator): Don't set ctype to an ENUMERAL_TYPE.
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 85249f1..263ab3f 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -8338,10 +8338,15 @@ grokdeclarator (const cp_declarator *declarator,
else if (TYPE_P (qualifying_scope))
{
ctype = qualifying_scope;
- if (innermost_code != cdk_function
- && current_class_type
- && !UNIQUELY_DERIVED_FROM_P (ctype,
- current_class_type))
+ if (!MAYBE_CLASS_TYPE_P (ctype))
+ {
+ error ("%q#T is not a class or a namespace", ctype);
+ ctype = NULL_TREE;
+ }
+ else if (innermost_code != cdk_function
+ && current_class_type
+ && !UNIQUELY_DERIVED_FROM_P (ctype,
+ current_class_type))
{
error ("type %qT is not derived from type %qT",
ctype, current_class_type);
@@ -9350,7 +9355,7 @@ grokdeclarator (const cp_declarator *declarator,
would not have exited the loop above. */
if (declarator
&& declarator->u.id.qualifying_scope
- && TYPE_P (declarator->u.id.qualifying_scope))
+ && MAYBE_CLASS_TYPE_P (declarator->u.id.qualifying_scope))
{
tree t;
@@ -10156,13 +10161,6 @@ grokdeclarator (const cp_declarator *declarator,
"declared out of global scope", name);
}
- if (ctype != NULL_TREE
- && TREE_CODE (ctype) != NAMESPACE_DECL && !MAYBE_CLASS_TYPE_P (ctype))
- {
- error ("%q#T is not a class or a namespace", ctype);
- ctype = NULL_TREE;
- }
-
if (ctype == NULL_TREE)
{
if (virtualp)
diff --git a/gcc/testsuite/g++.dg/cpp0x/enum20.C b/gcc/testsuite/g++.dg/cpp0x/enum20.C
new file mode 100644
index 0000000..e5dc186
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/enum20.C
@@ -0,0 +1,5 @@
+// PR c++/47635
+// { dg-options -std=c++0x }
+
+enum A { };
+void A::f() { } // { dg-error "not a class" }