re PR c++/52582 (g++ ICE when compiling qt-4.8.0 with -O2 on PPC (32bit))

	PR c++/52582
	* config/rs6000/rs6000.c (call_ABI_of_interest): Return true
	if c_node is NULL.

	* g++.dg/opt/pr52582.C: New test.

From-SVN: r185384

gcc/testsuite/ChangeLog

+2012-03-14  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/52582
+	* g++.dg/opt/pr52582.C: New test.
+
 2012-03-14  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/52571

gcc/testsuite/g++.dg/opt/pr52582.C

+// PR c++/52582
+// { dg-do compile }
+// { dg-options "-O2" }
+
+inline void *operator new (__SIZE_TYPE__, void *p) throw ()
+{
+  return p;
+}
+
+struct B
+{
+  virtual ~B ();
+  B ();
+};
+
+struct A : B
+{
+  A () : B () {}
+  virtual void bar ();
+};
+
+void
+foo ()
+{
+  char a[64];
+  B *b = new (&a) A ();
+  b->~B ();
+}