re PR middle-end/40388 (another null pointer in remove_unreachable_regions)

	PR middle-end/48388
	* except.c (can_be_reached_by_runtime): Test for NULL aka bitmap.
	* g++.dg/torture/pr40388.C: New testcase.

From-SVN: r149516

gcc/ChangeLog

+2009-07-11  Jan Hubicka  <jh@suse.cz>
+
+	PR middle-end/48388
+	* except.c (can_be_reached_by_runtime): Test for NULL aka bitmap.
+
 2009-07-11  Jakub Jelinek  <jakub@redhat.com>
 
 	PR debug/40713

gcc/except.c

@@ -565,7 +565,7 @@ can_be_reached_by_runtime (sbitmap contains_stmt, struct eh_region_d *r)
       if (i->type != ERT_MUST_NOT_THROW)
 	{
 	  bool found = TEST_BIT (contains_stmt, i->region_number);
-	  if (!found)
+	  if (!found && i->aka)
 	    EXECUTE_IF_SET_IN_BITMAP (i->aka, 0, n, bi)
 	      if (TEST_BIT (contains_stmt, n))
 	      {

gcc/testsuite/ChangeLog

+2009-07-11  Jan Hubicka  <jh@suse.cz>
+
+	PR middle-end/48388
+	* g++.dg/torture/pr40388.C: New testcase.
+
 2009-07-11  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/40668

gcc/testsuite/g++.dg/torture/pr40388.C

+void foo();
+
+struct A
+{
+  ~A()
+  {
+    try
+    {
+      foo();
+      foo();
+    }
+    catch (...)
+    {
+    }
+  }
+};
+
+void bar()
+{
+  A a1, a2;
+}
+void foo();
+
+struct A
+{
+  ~A()
+  {
+    try
+    {
+      foo();
+      foo();
+    }
+    catch (...)
+    {
+    }
+  }
+};
+
+void bar()
+{
+  A a1, a2;
+}