From 9d13a0695eee2cd19327279ef3cd464f8bf0ba76 Mon Sep 17 00:00:00 2001
From: Jason Merrill <jason@redhat.com>
Date: Fri, 8 Mar 2013 11:04:15 -0500
Subject: [PATCH] re PR c++/51884 ([C++11] ICE with local class/lambda template
 argument)

	PR c++/51884
	* class.c (modify_all_vtables): Mangle the vtable name before
	entering dfs_walk.

From-SVN: r196551
---
 gcc/cp/ChangeLog                         |  4 ++++
 gcc/cp/class.c                           |  4 ++++
 gcc/testsuite/g++.dg/cpp0x/local-targ1.C | 31 +++++++++++++++++++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp0x/local-targ1.C

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 0aa5b4b..8e14fa2 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,9 @@
 2013-03-08  Jason Merrill  <jason@redhat.com>
 
+	PR c++/51884
+	* class.c (modify_all_vtables): Mangle the vtable name before
+	entering dfs_walk.
+
 	* semantics.c (lambda_expr_this_capture): In unevaluated context,
 	just return the nearest 'this'.
 
diff --git a/gcc/cp/class.c b/gcc/cp/class.c
index 2a0351f..746c29d 100644
--- a/gcc/cp/class.c
+++ b/gcc/cp/class.c
@@ -2541,6 +2541,10 @@ modify_all_vtables (tree t, tree virtuals)
   tree binfo = TYPE_BINFO (t);
   tree *fnsp;
 
+  /* Mangle the vtable name before entering dfs_walk (c++/51884).  */
+  if (TYPE_CONTAINS_VPTR_P (t))
+    get_vtable_decl (t, false);
+
   /* Update all of the vtables.  */
   dfs_walk_once (binfo, dfs_modify_vtables, NULL, t);
 
diff --git a/gcc/testsuite/g++.dg/cpp0x/local-targ1.C b/gcc/testsuite/g++.dg/cpp0x/local-targ1.C
new file mode 100644
index 0000000..588149a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/local-targ1.C
@@ -0,0 +1,31 @@
+// PR c++/51884
+// { dg-do compile { target c++11 } }
+// { dg-final { scan-assembler "_ZN1BIZN3fooIivE3barILb1EEEvvE1CEC1ERKS4_" } }
+
+template<typename TT>
+  struct test { static const int value = 0; };
+template<int I>
+  struct enable_if { typedef void type; };
+
+struct A { virtual void f() {} };
+template<typename U> struct B : A { B(); B(const B&); };
+template<typename U> B<U>::B() { }
+template<typename U> B<U>::B(const B&) { }
+
+template<class T> void g(T) { }
+
+template<typename T, typename = void> struct foo;
+template<typename T>
+struct foo<T,typename enable_if<test<T>::value>::type>
+{
+  template <bool P> void bar() {
+    struct C { } c;
+    B<C> b;
+    g(b);
+  }
+};
+
+int main() {
+  foo<int> f;
+  f.bar<true>();
+}
-- 
2.7.4