Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-09 12:23:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

Warn about unset midrule $$ if the corresponding $n is used.

Browse Source 
* src/reader.c (symbol_should_be_used): Check midrule parent rule for
$n usage.
(packgram): Before invoking grammar_rule_check on any rule, make sure
all actions have already been scanned in order to set `used' flags.
Otherwise, checking that a midrule's $$ is set will not always work
properly because the midrule check must forward-reference the midrule's
parent rule.
* tests/input.at (AT_CHECK_UNUSED_VALUES): Extend to check the new
warning.
This commit is contained in:
Joel E. Denny
2006-10-21 02:31:50 +00:00
parent a501eca911
commit 519d000408
3 changed files with 43 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
ChangeLog
View File

@@ -1,3 +1,16 @@
2006-10-20 Joel E. Denny <jdenny@ces.clemson.edu>
Warn about unset midrule $$ if the corresponding $n is used.
* src/reader.c (symbol_should_be_used): Check midrule parent rule for
$n usage.
(packgram): Before invoking grammar_rule_check on any rule, make sure
all actions have already been scanned in order to set `used' flags.
Otherwise, checking that a midrule's $$ is set will not always work
properly because the midrule check must forward-reference the midrule's
parent rule.
* tests/input.at (AT_CHECK_UNUSED_VALUES): Extend to check the new
warning.
2006-10-20 Joel E. Denny <jdenny@ces.clemson.edu>
More improvements to the documentation of the prologue alternatives: