re PR tree-optimization/49615 (internal compiler error: verify_stmts failed /…

re PR tree-optimization/49615 (internal compiler error: verify_stmts failed / LHS in noreturn call with pointer-to-never-returning-member)

2011-07-04  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/49615
	* tree-cfgcleanup.c (split_bbs_on_noreturn_calls): Fix
	basic-block index check.

	* g++.dg/torture/pr49615.C: New testcase.

From-SVN: r175803

gcc/ChangeLog

+2011-07-04  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/49615
+	* tree-cfgcleanup.c (split_bbs_on_noreturn_calls): Fix
+	basic-block index check.
+
 2011-07-04  Georg-Johann Lay  <avr@gjlay.de>
 
 	* longlong.h (count_leading_zeros, count_trailing_zeros,

gcc/testsuite/ChangeLog

+2011-07-04  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/49615
+	* g++.dg/torture/pr49615.C: New testcase.
+
 2011-07-03  Ira Rosen  <ira.rosen@linaro.org>
 
 	PR tree-optimization/49610

gcc/testsuite/g++.dg/torture/pr49615.C

+/* { dg-do compile } */
+/* { dg-options "-g" } */
+
+template <class T>
+static inline bool Dispatch (T* obj, void (T::*func) ())
+{
+  (obj->*func) ();
+}
+class C
+{
+  bool f (int);
+  void g ();
+};
+bool C::f (int n)
+{
+  bool b;
+  switch (n)
+    {
+      case 0:
+	  b = Dispatch (this, &C::g);
+      case 1:
+	  b = Dispatch (this, &C::g);
+    }
+}
+void C::g ()
+{
+  for (;;) { }
+}
+

gcc/tree-cfgcleanup.c

@@ -599,7 +599,7 @@ split_bbs_on_noreturn_calls (void)
 	   BB is present in the cfg.  */
 	if (bb == NULL
 	    || bb->index < NUM_FIXED_BLOCKS
-	    || bb->index >= n_basic_blocks
+	    || bb->index >= last_basic_block
 	    || BASIC_BLOCK (bb->index) != bb
 	    || !gimple_call_noreturn_p (stmt))
 	  continue;