re PR c/37171 (Canonical spelling optimization dependency)

	PR c/37171
	* c-parser.c (c_parser_attributes): For keywords use canonical
	spelling for attr_name.

	* gcc.dg/pr37171.c: New test.
	* g++.dg/ext/attrib34.C: New test.

From-SVN: r139317

gcc/ChangeLog

+2008-08-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/37171
+	* c-parser.c (c_parser_attributes): For keywords use canonical
+	spelling for attr_name.
+
 2008-08-20  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
 
 	* value-prof.c (check_counter): Revert wrong call to error.

gcc/c-parser.c

@@ -2828,8 +2828,13 @@ c_parser_attributes (c_parser *parser)
 		}
 	      if (!ok)
 		break;
+	      /* Accept __attribute__((__const)) as __attribute__((const))
+		 etc.  */
+	      attr_name
+		= ridpointers[(int) c_parser_peek_token (parser)->keyword];
 	    }
-	  attr_name = c_parser_peek_token (parser)->value;
+	  else
+	    attr_name = c_parser_peek_token (parser)->value;
 	  c_parser_consume_token (parser);
 	  if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN))
 	    {

gcc/testsuite/ChangeLog

+2008-08-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/37171
+	* gcc.dg/pr37171.c: New test.
+
 2008-08-20  Arnaud Charlet  <charlet@adacore.com>
 
 	* gnat.dg/div_no_warning.adb: New test.

gcc/testsuite/gcc.dg/pr37171.c

+/* PR c/37171 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+
+unsigned int f1 (void) __attribute__((const));
+unsigned int f2 (void) __attribute__((__const));
+unsigned int f3 (void) __attribute__((__const__));
+
+unsigned int f4 (void)
+{
+  return f1 () + f1 () + f1 () + f1 ()
+	 + f2 () + f2 () + f2 () + f2 ()
+	 + f3 () + f3 () + f3 () + f3 ();
+}
+
+/* { dg-final { scan-tree-dump-times "= f1 \\(\\)" 1 "optimized" } } */
+/* { dg-final { scan-tree-dump-times "= f2 \\(\\)" 1 "optimized" } } */
+/* { dg-final { scan-tree-dump-times "= f3 \\(\\)" 1 "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */