Convert diagnostic_override_option_index from macro to inline function

gcc/ChangeLog:
	* diagnostic.h (diagnostic_override_option_index): Convert from
	macro to inline function.

From-SVN: r247665

gcc/ChangeLog

 2017-05-05  David Malcolm  <dmalcolm@redhat.com>
 
+	* diagnostic.h (diagnostic_override_option_index): Convert from
+	macro to inline function.
+
+2017-05-05  David Malcolm  <dmalcolm@redhat.com>
+
 	* diagnostic.c (last_module_changed_p): New function.
 	(set_last_module): New function.
 	(diagnostic_report_current_module): Convert macro usage to

gcc/diagnostic.h

@@ -270,8 +270,12 @@ extern diagnostic_context *global_dc;
 
 /* Override the option index to be used for reporting a
    diagnostic.  */
-#define diagnostic_override_option_index(DI, OPTIDX) \
-    ((DI)->option_index = (OPTIDX))
+
+static inline void
+diagnostic_override_option_index (diagnostic_info *info, int optidx)
+{
+  info->option_index = optidx;
+}
 
 /* Diagnostic related functions.  */
 extern void diagnostic_initialize (diagnostic_context *, int);