re PR c/59304 (#pragma diagnostic pop after warning fails for options…

re PR c/59304 (#pragma diagnostic pop after warning fails for options unspecified in the command-line and disabled by default)

gcc/ChangeLog:

2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR c/59304
	* opts-common.c (set_option): Call diagnostic_classify_diagnostic
	before setting the option.
	* diagnostic.c (diagnostic_classify_diagnostic): Record
	command-line status.

gcc/testsuite/ChangeLog:

2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR c/59304
	* gcc.dg/pr59304.c: New test.

From-SVN: r214221

gcc/ChangeLog

+2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+	PR c/59304
+	* opts-common.c (set_option): Call diagnostic_classify_diagnostic
+	before setting the option.
+	* diagnostic.c (diagnostic_classify_diagnostic): Record
+	command-line status.
+
 2014-08-20  Richard Biener  <rguenther@suse.de>
 
 	PR lto/62190

gcc/diagnostic.c

@@ -584,6 +584,15 @@ diagnostic_classify_diagnostic (diagnostic_context *context,
     {
       int i;
 
+      /* Record the command-line status, so we can reset it back on DK_POP. */
+      if (old_kind == DK_UNSPECIFIED)
+	{
+	  old_kind = context->option_enabled (option_index,
+					      context->option_state)
+	    ? DK_WARNING : DK_IGNORED;
+	  context->classify_diagnostic[option_index] = old_kind;
+	}
+
       for (i = context->n_classification_history - 1; i >= 0; i --)
 	if (context->classification_history[i].option == option_index)
 	  {

gcc/opts-common.c

@@ -1119,6 +1119,9 @@ set_option (struct gcc_options *opts, struct gcc_options *opts_set,
   if (!flag_var)
     return;
 
+  if ((diagnostic_t) kind != DK_UNSPECIFIED && dc != NULL)
+    diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc);
+
   if (opts_set != NULL)
     set_flag_var = option_flag_var (opt_index, opts_set);
 
@@ -1198,10 +1201,6 @@ set_option (struct gcc_options *opts, struct gcc_options *opts_set,
 	}
 	break;
     }
-
-  if ((diagnostic_t) kind != DK_UNSPECIFIED
-      && dc != NULL)
-    diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc);
 }
 
 /* Return the address of the flag variable for option OPT_INDEX in

gcc/testsuite/ChangeLog

+2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+	PR c/59304
+	* opts-common.c (set_option): Call diagnostic_classify_diagnostic
+	before setting the option.
+	* diagnostic.c (diagnostic_classify_diagnostic): Record
+	command-line status.
+
 2014-08-20  Mark Wielaard  <mjw@redhat.com>
 
 	* gcc.dg/guality/restrict.c: Add `used' attribute to all variables.

gcc/testsuite/gcc.dg/pr59304.c

+/* { dg-do compile } */
+enum EE
+  {
+    ONE, TWO, THREE
+  };
+
+int f (enum EE e)
+{
+  int r = 0;
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic error "-Wswitch-enum"
+
+  switch (e)
+    {
+    case ONE:
+      r = 1;
+      break;
+    case TWO:
+      r = 2;
+      break;
+    case THREE:
+      r = 3;
+      break;
+    }
+
+#pragma GCC diagnostic pop
+
+  switch (e)
+    {
+    case ONE:
+      r = 1;
+      break;
+    case TWO:
+      r = 2;
+      break;
+    }
+
+  return r;
+}