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Warn about dubious constructions like "%token T T".

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* src/symtab.h (struct symbol.declared): New member.
* src/symtab.c (symbol_new): Initialize it to false.
(symbol_class_set): New arg DECLARING, specifying whether
this is a declaration that we want to warn about, if there
is more than one of them.  All uses changed.
This commit is contained in:
Paul Eggert
2006-01-03 21:31:57 +00:00
parent 1221b78adb
commit 073f92889f
5 changed files with 36 additions and 15 deletions
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12
src/parse-gram.y
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@@ -1,6 +1,6 @@
%{/* Bison Grammar Parser -*- C -*-
Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
@@ -346,24 +346,24 @@ symbol_def:
}
| ID
{
symbol_class_set ($1, current_class, @1);
symbol_class_set ($1, current_class, @1, true);
symbol_type_set ($1, current_type, @1);
}
| ID INT
{
symbol_class_set ($1, current_class, @1);
symbol_class_set ($1, current_class, @1, true);
symbol_type_set ($1, current_type, @1);
symbol_user_token_number_set ($1, $2, @2);
}
| ID string_as_id
{
symbol_class_set ($1, current_class, @1);
symbol_class_set ($1, current_class, @1, true);
symbol_type_set ($1, current_type, @1);
symbol_make_alias ($1, $2, @$);
}
| ID INT string_as_id
{
symbol_class_set ($1, current_class, @1);
symbol_class_set ($1, current_class, @1, true);
symbol_type_set ($1, current_type, @1);
symbol_user_token_number_set ($1, $2, @2);
symbol_make_alias ($1, $3, @$);
@@ -441,7 +441,7 @@ string_as_id:
STRING
{
$$ = symbol_get (quotearg_style (c_quoting_style, $1), @1);
symbol_class_set ($$, token_sym, @1);
symbol_class_set ($$, token_sym, @1, false);
}
;