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* src/reduce.c (inaccessable_symbols): Fix a buglet: because of a

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lacking `+ 1' to nrules, Bison reported as useless a token if it
was used solely to set the precedence of the last rule...
This commit is contained in:
Akim Demaille
2002-04-07 15:30:42 +00:00
parent 26b23c1a49
commit 11652ab3dc
3 changed files with 18 additions and 1 deletions
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7
ChangeLog
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@@ -1,3 +1,10 @@
2002-04-07 Akim Demaille <akim@epita.fr>
* src/reduce.c (inaccessable_symbols): Fix a buglet: because of a
lacking `+ 1' to nrules, Bison reported as useless a token if it
was used solely to set the precedence of the last rule...
2002-04-07 Akim Demaille <akim@epita.fr> 2002-04-07 Akim Demaille <akim@epita.fr>
* data/bison.c++, data/bison.simple: Don't output the current file * data/bison.c++, data/bison.simple: Don't output the current file

10
NEWS
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@@ -3,6 +3,16 @@ Bison News
Changes in version 1.49a: Changes in version 1.49a:
* False `Token not used' report fixed.
On a grammar such as
%token useless useful
%%
exp: '0' %prec useful;
where a token was used to set the precedence of the last rule,
bison reported both `useful' and `useless' as useless tokens.
* Revert the C++ namespace changes introduced in 1.31, as they caused too * Revert the C++ namespace changes introduced in 1.31, as they caused too
many portability hassles. many portability hassles.

2
src/reduce.c
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@@ -215,7 +215,7 @@ inaccessable_symbols (void)
nuseless_nonterminals = nvars - nuseful_nonterminals; nuseless_nonterminals = nvars - nuseful_nonterminals;
/* A token that was used in %prec should not be warned about. */ /* A token that was used in %prec should not be warned about. */
for (i = 1; i < nrules; i++) for (i = 1; i < nrules + 1; i++)
if (rules[i].precsym != 0) if (rules[i].precsym != 0)
bitset_set (V1, rules[i].precsym); bitset_set (V1, rules[i].precsym);
} }