From: Jason Merrill <jason@redhat.com>
Date: Thu, 16 Mar 2023 17:11:32 +0000 (-0400)
Subject: c++: &enum::enumerator [PR101869]
X-Git-Tag: basepoints/gcc-14~486
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1cc8814098bb46f9fca58a0b831fbf9a8574bdc9;p=thirdparty%2Fgcc.git

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

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

	PR c++/101869

gcc/cp/ChangeLog:

	* semantics.cc (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.cc b/gcc/cp/semantics.cc
index 57dd7b66da83..87c2e8a71118 100644
--- a/gcc/cp/semantics.cc
+++ b/gcc/cp/semantics.cc
@@ -2386,7 +2386,8 @@ 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
index 000000000000..b2cd9797a06b
--- /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 } }
+}