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* src/reader.c (grammar_midrule_action): If $$ is set in a

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mid-rule, move the `used' bit to its lhs.
* tests/input.at (Unused values): New.
* tests/actions.at (Exotic Dollars): Adjust: exp is not typed.
This commit is contained in:
Akim Demaille
2006-01-04 08:32:46 +00:00
parent f52b276c55
commit 378f4bd846
6 changed files with 72 additions and 9 deletions
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6
src/reader.c
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@@ -1,7 +1,7 @@
/* Input parser for Bison
Copyright (C) 1984, 1986, 1989, 1992, 1998, 2000, 2001, 2002, 2003,
2005 Free Software Foundation, Inc.
2005, 2006 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
@@ -307,6 +307,10 @@ grammar_midrule_action (void)
midrule->action = current_rule->action;
midrule->action_location = dummy_location;
current_rule->action = NULL;
/* If $$ was used in the action, the LHS of the enclosing rule was
incorrectly flagged as used. */
midrule->used = current_rule->used;
current_rule->used = false;
if (previous_rule_end)
previous_rule_end->next = midrule;