c-parser (c_parser_statement_after_labels): Move error from here...

2007-12-04  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	* c-parser (c_parser_statement_after_labels): Move error from here...
	(c_parser_label): ... to here. Check that the declaration is not
	actually just another label.
testsuite/
	* gcc.dg/parse-decl-after-if.c: New.
	* gcc.dg/20031223-1.c: Adjust.

From-SVN: r130606

gcc/ChangeLog

+2007-12-04  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	* c-parser (c_parser_statement_after_labels): Move error from here...
+	(c_parser_label): ... to here. Check that the declaration is not
+	actually just another label.
+
 2007-12-04  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/34334

gcc/c-parser.c

@@ -3638,7 +3638,20 @@ c_parser_label (c_parser *parser)
 	}
     }
   if (label)
-    SET_EXPR_LOCATION (label, loc1);
+    {
+      SET_EXPR_LOCATION (label, loc1);
+      if (c_parser_next_token_starts_declspecs (parser)
+	  && !(c_parser_next_token_is (parser, CPP_NAME)
+	       && c_parser_peek_2nd_token (parser)->type == CPP_COLON))
+	{
+	  error ("%Ha label can only be part of a statement and "
+		 "a declaration is not a statement",
+		 &c_parser_peek_token (parser)->location);
+	  c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false, 
+					 /*nested*/ true, /*empty_ok*/ false,
+					 /*start_attr_ok*/ true);
+	}
+    }
 }
 
 /* Parse a statement (C90 6.6, C99 6.8).
@@ -3864,16 +3877,6 @@ c_parser_statement_after_labels (c_parser *parser)
       break;
     default:
     expr_stmt:
-      if (c_parser_next_token_starts_declspecs (parser)) 
-	{
-	  error ("%Ha label can only be part of a statement and "
-		 "a declaration is not a statement",
-		 &c_parser_peek_token (parser)->location);
-	  c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false, 
-					 /*nested*/ true, /*empty_ok*/ false,
-					 /*start_attr_ok*/ true);
-	  return;
-	}
       stmt = c_finish_expr_stmt (c_parser_expression_conv (parser).value);
     expect_semicolon:
       c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");

gcc/testsuite/ChangeLog

+2007-12-04  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+	
+	* gcc.dg/parse-decl-after-if.c: New.
+	* gcc.dg/20031223-1.c: Adjust.
+	
 2007-12-04  Douglas Gregor  <doug.gregor@gmail.com>
 
        PR c++/33509

gcc/testsuite/gcc.dg/20031223-1.c

@@ -9,4 +9,5 @@ void f ()
 {
  l: int; /* { dg-error "a label can only be part of a statement and a declaration is not a statement" } */
  /* { dg-warning "useless type name in empty declaration" "" { target *-*-* } 10 } */
+ /* { dg-error "label at end of compound statement" "" { target *-*-* } 10 } */
 }

gcc/testsuite/gcc.dg/parse-decl-after-if.c

+/* Parse error recovery
+{ dg-do compile }
+{ dg-options "-fsyntax-only" }
+*/
+
+void f(x)
+{
+  if (x > 1)
+    int ret = 1; /* { dg-error "expected expression before 'int'" } */
+
+}