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Also warn about non-used mid-rule values.

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* src/symlist.h, src/symlist.c (symbol_list): Add a mid_rule
member.
(symbol_list_new): Adjust.
* src/reader.c (symbol_typed_p): New.
(grammar_rule_check): Use it.
(grammar_midrule_action): Bind a mid-rule LHS to its rule.
Check its rule.
* tests/input.at (AT_CHECK_UNUSED_VALUES): New.
Use it.
* tests/actions.at (Exotic Dollars): Adjust.
This commit is contained in:
Akim Demaille
2006-01-04 09:18:37 +00:00
parent 378f4bd846
commit 8486615972
7 changed files with 115 additions and 42 deletions
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7
tests/actions.at
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@@ -113,6 +113,7 @@ AT_DATA_GRAMMAR([[input.y]],
exp: a_1 a_2 { $<val>$ = 3; } { $<val>$ = $<val>3 + 1; } a_5
sum_of_the_five_previous_values
{
USE (($1, $2, $<foo>3, $<foo>4, $5));
printf ("%d\n", $6);
}
;
@@ -146,11 +147,7 @@ main (void)
}
]])
AT_CHECK([bison -d -v -o input.c input.y], 0, [],
[input.y:30.6-34.5: warning: unused value: $1
input.y:30.6-34.5: warning: unused value: $2
input.y:30.6-34.5: warning: unused value: $5
])
AT_CHECK([bison -d -v -o input.c input.y], 0)
AT_COMPILE([input])
AT_PARSER_CHECK([./input], 0,
[[15