re PR c++/44039 (ICE: Segmentation fault on error recovery)

/cp
2010-07-02  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/44039
	* pt.c (tsubst_baselink): Return error_mark_node if lookup_fnfields
	returns NULL_TREE.

/testsuite
2010-07-02  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/44039
	* g++.dg/template/crash101.C: New.

From-SVN: r161698

gcc/cp/ChangeLog

+2010-07-02  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/44039
+	* pt.c (tsubst_baselink): Return error_mark_node if lookup_fnfields
+	returns NULL_TREE.
+
 2010-07-01  Richard Guenther  <rguenther@suse.de>
 
 	* cp-gimplify.c (cp_gimplify_expr): Open-code the rhs

gcc/cp/pt.c

@@ -10737,6 +10737,8 @@ tsubst_baselink (tree baselink, tree object_type,
     if (IDENTIFIER_TYPENAME_P (name))
       name = mangle_conv_op_name_for_type (optype);
     baselink = lookup_fnfields (qualifying_scope, name, /*protect=*/1);
+    if (!baselink)
+      return error_mark_node;
 
     /* If lookup found a single function, mark it as used at this
        point.  (If it lookup found multiple functions the one selected

gcc/testsuite/ChangeLog

+2010-07-02  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/44039
+	* g++.dg/template/crash101.C: New.
+
 2010-07-02  Iain Sandoe  <iains@gcc.gnu.org>
 
 	* obj-c++.dg/cxx-ivars-3.mm: Make the test require OSX <= 10.4.

gcc/testsuite/g++.dg/template/crash101.C

+// PR c++/44039
+
+struct locale {  };
+
+template<class charT>
+  void
+  foo()
+  { locale::locale(); } // // { dg-error "cannot call|function-style" }
+
+void
+bar()
+{ foo<char>(); }