From fb4347e44d3e1bf9970f361cf8b25c0b7f5d1d9f Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Fri, 25 Mar 2011 17:34:44 +0000
Subject: Give an error if a label is defined but not used.

From-SVN: r171518
---
 gcc/go/gofrontend/parse.h | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

(limited to 'gcc/go/gofrontend/parse.h')

diff --git a/gcc/go/gofrontend/parse.h b/gcc/go/gofrontend/parse.h
index d164414..a9f6455 100644
--- a/gcc/go/gofrontend/parse.h
+++ b/gcc/go/gofrontend/parse.h
@@ -150,7 +150,7 @@ class Parse
   // For break and continue we keep a stack of statements with
   // associated labels (if any).  The top of the stack is used for a
   // break or continue statement with no label.
-  typedef std::vector<std::pair<Statement*, const Label*> > Bc_stack;
+  typedef std::vector<std::pair<Statement*, Label*> > Bc_stack;
 
   // Parser nonterminals.
   void identifier_list(Typed_identifier_list*);
@@ -220,7 +220,7 @@ class Parse
 			 bool* is_type_switch);
   Expression* qualified_expr(Expression*, source_location);
   Expression* id_to_expression(const std::string&, source_location);
-  void statement(const Label*);
+  void statement(Label*);
   bool statement_may_start_here();
   void labeled_stmt(const std::string&, source_location);
   Expression* simple_stat(bool, bool, Range_clause*, Type_switch*);
@@ -236,26 +236,25 @@ class Parse
   void go_or_defer_stat();
   void return_stat();
   void if_stat();
-  void switch_stat(const Label*);
-  Statement* expr_switch_body(const Label*, Expression*, source_location);
+  void switch_stat(Label*);
+  Statement* expr_switch_body(Label*, Expression*, source_location);
   void expr_case_clause(Case_clauses*, bool* saw_default);
   Expression_list* expr_switch_case(bool*);
-  Statement* type_switch_body(const Label*, const Type_switch&,
-			      source_location);
+  Statement* type_switch_body(Label*, const Type_switch&, source_location);
   void type_case_clause(Named_object*, Type_case_clauses*, bool* saw_default);
   void type_switch_case(std::vector<Type*>*, bool*);
-  void select_stat(const Label*);
+  void select_stat(Label*);
   void comm_clause(Select_clauses*, bool* saw_default);
   bool comm_case(bool*, Expression**, Expression**, Expression**,
 		 std::string*, std::string*, bool*);
   bool send_or_recv_stmt(bool*, Expression**, Expression**, Expression**,
 			 std::string*, std::string*);
-  void for_stat(const Label*);
+  void for_stat(Label*);
   void for_clause(Expression**, Block**);
   void range_clause_decl(const Typed_identifier_list*, Range_clause*);
   void range_clause_expr(const Expression_list*, Range_clause*);
-  void push_break_statement(Statement*, const Label*);
-  void push_continue_statement(Statement*, const Label*);
+  void push_break_statement(Statement*, Label*);
+  void push_continue_statement(Statement*, Label*);
   void pop_break_statement();
   void pop_continue_statement();
   Statement* find_bc_statement(const Bc_stack*, const std::string&);
-- 
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