re PR c++/58612 ([c++11] ICE calling non-constexpr from constexpr in template class)

	PR c++/58612
	* tree.c (bot_replace): Only replace a dummy 'this' parm.

From-SVN: r212505

gcc/cp/ChangeLog

 2014-07-13  Jason Merrill  <jason@redhat.com>
 
+	PR c++/58612
+	* tree.c (bot_replace): Only replace a dummy 'this' parm.
+
 	PR c++/60628
 	* decl.c (create_array_type_for_decl): Only check for auto once.
 

gcc/cp/tree.c

@@ -2353,7 +2353,8 @@ bot_replace (tree* t, int* /*walk_subtrees*/, void* data)
 	*t = (tree) n->value;
     }
   else if (TREE_CODE (*t) == PARM_DECL
-	   && DECL_NAME (*t) == this_identifier)
+	   && DECL_NAME (*t) == this_identifier
+	   && !DECL_CONTEXT (*t))
     {
       /* In an NSDMI we need to replace the 'this' parameter we used for
 	 parsing with the real one for this function.  */

gcc/testsuite/g++.dg/cpp0x/constexpr-neg3.C

+// PR c++/58612
+// { dg-do compile { target c++11 } }
+
+struct A
+{
+  int foo() const { return 0; }
+};
+
+template<typename> struct B
+{
+  A a;
+  constexpr int bar() { return a.foo(); } // { dg-error "foo" }
+};
+
+constexpr int i = B<void>().bar(); // { dg-error "bar" }