re PR ipa/65465 (Internal compiler error: in build2_stIat)

Fix for PR ipa/65465.

	PR ipa/65465
	* cgraphunit.c (cgraph_node::create_wrapper): Correctly reset
	all fields of cgraph_thunk_info.
	* g++.dg/ipa/pr65465.C: New test.

From-SVN: r221518

gcc/ChangeLog

+2015-03-19  Martin Liska  <mliska@suse.cz>
+
+	PR ipa/65465
+	* cgraphunit.c (cgraph_node::create_wrapper): Correctly reset
+	all fields of cgraph_thunk_info.
+
 2015-03-19  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	* ipa-chkp.c (chkp_maybe_create_clone): Don't try to

gcc/cgraphunit.c

@@ -2484,8 +2484,9 @@ cgraph_node::create_wrapper (cgraph_node *target)
 
   /* Turn alias into thunk and expand it into GIMPLE representation.  */
   definition = true;
+
+  memset (&thunk, 0, sizeof (cgraph_thunk_info));
   thunk.thunk_p = true;
-  thunk.this_adjusting = false;
   create_edge (target, NULL, count, CGRAPH_FREQ_BASE);
 
   tree arguments = DECL_ARGUMENTS (decl);

gcc/testsuite/ChangeLog

+2015-03-19  Jakub Jelinek  <jakub@redhat.com>
+
+	* g++.dg/ipa/pr65465.C: New test.
+
 2015-03-19  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/52659

gcc/testsuite/g++.dg/ipa/pr65465.C

+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+struct A {};
+struct B { virtual A foo () const; };
+struct C { A foo () const; };
+struct D : virtual B { A foo () const {} };
+struct F : D { virtual int bar () const; };
+int F::bar () const { return 0; }
+A C::foo () const { return A (); }