From: Jason Merrill <jason@redhat.com>
Date: Thu, 31 Mar 2022 22:15:24 +0000 (-0400)
Subject: c++: dump alias-declaration scope
X-Git-Tag: basepoints/gcc-14~7166
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ac5b356d0567992d8863816e203c7d98b25036dc;p=thirdparty%2Fgcc.git

c++: dump alias-declaration scope

An alias can't be declared with a qualified-id in actual code, but in
diagnostics we want to know which scope it belongs to, and I think a
nested-name-specifier is the best way to provide that.

gcc/cp/ChangeLog:

	* error.cc (dump_decl): Check TFF_UNQUALIFIED_NAME.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp0x/alias-decl-1.C: Expect qualified name.
---

diff --git a/gcc/cp/error.cc b/gcc/cp/error.cc
index 1e944ca3f750..2b07136b5ca7 100644
--- a/gcc/cp/error.cc
+++ b/gcc/cp/error.cc
@@ -1246,6 +1246,8 @@ dump_decl (cxx_pretty_printer *pp, tree t, int flags)
 	      || flags & TFF_CLASS_KEY_OR_ENUM))
 	{
 	  pp_cxx_ws_string (pp, "using");
+	  if (! (flags & TFF_UNQUALIFIED_NAME))
+	    dump_scope (pp, CP_DECL_CONTEXT (t), flags);
 	  dump_decl (pp, DECL_NAME (t), flags);
 	  pp_cxx_whitespace (pp);
 	  pp_cxx_ws_string (pp, "=");
diff --git a/gcc/testsuite/g++.dg/cpp0x/alias-decl-1.C b/gcc/testsuite/g++.dg/cpp0x/alias-decl-1.C
index 24b052092237..6dcb780e8955 100644
--- a/gcc/testsuite/g++.dg/cpp0x/alias-decl-1.C
+++ b/gcc/testsuite/g++.dg/cpp0x/alias-decl-1.C
@@ -12,5 +12,5 @@ template<class U> struct Ptr<U*> {}; // { dg-error "specialization" }
 
 struct A {
     using A = int;  // { dg-error "11:ISO C\\+\\+ forbids nested type .A." }
-// { dg-error "11:.using A = int. has the same name as" "" { target c++11 } .-1 }  
+// { dg-error "11:.using A::A = int. has the same name as" "" { target c++11 } .-1 }  
 };