Revert this change; no longer required.

	2013-11-06  Ian Lance Taylor  <iant@google.com>

	* go-lang.c (go_langhook_post_options): If
	-fisolate-erroneous-paths was turned on by an optimization option,
	turn it off.

From-SVN: r205711

gcc/go/ChangeLog

+2013-12-05  Ian Lance Taylor  <iant@google.com>
+
+	Revert this change; no longer required.
+	2013-11-06  Ian Lance Taylor  <iant@google.com>
+
+	* go-lang.c (go_langhook_post_options): If
+	-fisolate-erroneous-paths was turned on by an optimization option,
+	turn it off.
+
 2013-11-23  Ian Lance Taylor  <iant@google.com>
 
 	* go-gcc.cc (Gcc_backend::function_type): Add result_struct

gcc/go/go-lang.c

@@ -270,12 +270,6 @@ go_langhook_post_options (const char **pfilename ATTRIBUTE_UNUSED)
   if (flag_excess_precision_cmdline == EXCESS_PRECISION_DEFAULT)
     flag_excess_precision_cmdline = EXCESS_PRECISION_STANDARD;
 
-  /* The isolate_erroneous_paths optimization can change a nil
-     dereference from a panic to a trap, so we have to disable it for
-     Go, even though it is normally enabled by -O2.  */
-  if (!global_options_set.x_flag_isolate_erroneous_paths)
-    global_options.x_flag_isolate_erroneous_paths = 0;
-
   /* Returning false means that the backend should be used.  */
   return false;
 }