[PATCH] attribs: Add missing auto_diagnostic_group 3 times

[Jakub Jelinek <jakub@redhat.com>]

Hi!

In these spots, the error/error_at has some inform afterwards which are
explanation part of the same diagnostics, so should be tied with
auto_diagnostic_group with it.

Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

2022-10-04  Jakub Jelinek  <jakub@redhat.com>

	* attribs.cc (handle_ignored_attributes_option, decl_attributes,
	common_function_versions): Use auto_diagnostic_group.

--- gcc/attribs.cc.jj	2022-10-03 18:31:16.130032566 +0200
+++ gcc/attribs.cc	2022-10-03 21:27:02.364104260 +0200
@@ -251,6 +251,7 @@ handle_ignored_attributes_option (vec<ch
       /* We don't accept '::attr'.  */
       if (cln == nullptr || cln == opt)
 	{
+	  auto_diagnostic_group d;
 	  error ("wrong argument to ignored attributes");
 	  inform (input_location, "valid format is %<ns::attr%> or %<ns::%>");
 	  continue;
@@ -732,6 +733,7 @@ decl_attributes (tree *node, tree attrib
 	      || (spec->max_length >= 0
 		  && nargs > spec->max_length))
 	    {
+	      auto_diagnostic_group d;
 	      error ("wrong number of arguments specified for %qE attribute",
 		     name);
 	      if (spec->max_length < 0)
@@ -1167,6 +1169,7 @@ common_function_versions (tree fn1, tree
 	      std::swap (fn1, fn2);
 	      attr1 = attr2;
 	    }
+	  auto_diagnostic_group d;
 	  error_at (DECL_SOURCE_LOCATION (fn2),
 		    "missing %<target%> attribute for multi-versioned %qD",
 		    fn2);

	Jakub