stmt.c (preserve_subexpressions_p): Don't crash when current_function->stmt is unset.

	* stmt.c (preserve_subexpressions_p): Don't crash when
	current_function->stmt is unset.

From-SVN: r29485

gcc/ChangeLog

+Fri Sep 17 15:07:37 1999  Mark Mitchell  <mark@codesourcery.com>
+
+	* stmt.c (preserve_subexpressions_p): Don't crash when
+	current_function->stmt is unset.
+
 Fri Sep 17 15:03:16 1999  Mark Mitchell  <mark@codesourcery.com>
 
 	* stmt.c (expand_start_bindings): Allow callers to pass a flag

gcc/stmt.c

@@ -2603,7 +2603,8 @@ preserve_subexpressions_p ()
   if (flag_expensive_optimizations)
     return 1;
 
-  if (optimize == 0 || current_function == 0 || loop_stack == 0)
+  if (optimize == 0 || current_function == 0 
+      || current_function->stmt == 0 || loop_stack == 0)
     return 0;
 
   insn = get_last_insn_anywhere ();