re PR middle-end/71308 (ICE (segfault) in in gimple_fold_call gimple-fold.c:3060)

	PR middle-end/71308
	* gimple-fold.c (gimple_fold_call): Check that LHS is not null.

	* g++.dg/torture/pr71308.C: New test.

From-SVN: r236815

gcc/ChangeLog

+2016-05-27  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/71308
+	* gimple-fold.c (gimple_fold_call): Check that LHS is not null.
+
 2016-05-27  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>
 
 	* config/s390/s390.md (2x risbg splitters): Use

gcc/gimple-fold.c

@@ -3053,7 +3053,8 @@ gimple_fold_call (gimple_stmt_iterator *gsi, bool inplace)
 			  == void_type_node))
 		    gimple_call_set_fntype (stmt, TREE_TYPE (fndecl));
 		  /* If the call becomes noreturn, remove the lhs.  */
-		  if (gimple_call_noreturn_p (stmt)
+		  if (lhs
+		      && gimple_call_noreturn_p (stmt)
 		      && (VOID_TYPE_P (TREE_TYPE (gimple_call_fntype (stmt)))
 			  || should_remove_lhs_p (lhs)))
 		    {

gcc/testsuite/ChangeLog

+2016-05-27  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/71308
+	* g++.dg/torture/pr71308.C: New test.
+
 2016-05-27  Dominik Vogt  <vogt@linux.vnet.ibm.com>
 
 	* gcc.dg/zero_bits_compound-1.c: New test.

gcc/testsuite/g++.dg/torture/pr71308.C

+// PR middle-end/71308
+// { dg-do compile }
+
+class S
+{
+  void foo ();
+  virtual void bar () = 0;
+  virtual ~S ();
+};
+inline void
+S::foo ()
+{
+  bar ();
+};
+S::~S ()
+{
+  foo ();
+}