Joel E. Denny 7451638148 tests: fix empty unions. ...

Empty unions are not accepted by the ISO C99 grammar or by at
least some versions of Sun Studio.  Reported by Wolfgang S. Kechel
at
<http://lists.gnu.org/archive/html/bug-bison/2011-08/msg00003.html>.
* NEWS (2.5.1): Document fix.
* THANKS (Wolfgang S. Kechel): Add.
* tests/existing.at (GNU Cim Grammar)
(GNU pic (Groff 1.18.1) Grammar.): Remove empty %union.

2011-08-21 14:45:03 -04:00

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