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-Werror: fix for rules useless in parser after conflicts.

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* NEWS (2.4.3): Document fix.
* src/complain.c (error_message): Extend to handle incomplete
error messages so warn and warn_at can be used in more cases.
* src/gram.c (grammar_rules_useless_report): Use warn_at so that
-Werror is always obeyed.
* src/reduce.c (reduce_print): Use warn so that the "warnings
being treated as errors" message is printed consistently before
the first warning message.  This makes testing easier.
* tests/local.at (AT_BISON_WERROR_MSG): New macro.
(AT_BISON_CHECK_NO_XML): Extend to check -Werror and
--warnings=error when warnings appear in bison's stderr.
(cherry picked from commit 954474bfa1)
This commit is contained in:
Joel E. Denny
2010-08-01 18:51:46 -04:00
parent 3e948170f7
commit 4631c34fb7
6 changed files with 106 additions and 24 deletions
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NEWS
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@@ -224,6 +224,9 @@ Bison News
* Changes in version 2.4.3 (????-??-??):
** Bison now obeys -Werror and --warnings=error for warnings about
grammar rules that are useless in the parser due to conflicts.
** Problems with spawning M4 on at least FreeBSD 8 and FreeBSD 9 have
been fixed.