tests: port to Solaris 10 'diff -u'

* tests/regression.at (parse-gram.y: LALR = IELR): Port to Solaris 10,
where "diff -u X X" outputs "No differences encountered"
instead of outputting nothing.  Reported by Tomohiro Suzuki in
<http://lists.gnu.org/archive/html/bug-bison/2012-01/msg00101.html>.

diff --git a/tests/regression.at b/tests/regression.at
index 59e199822c6db0435b92a8906581fe33ef59532c..5affe4d9c62ab2c1a1c2f438cdee69ad060e2a1f 100644 (file)
--- a/tests/regression.at
+++ b/tests/regression.at
@@ -1258,10 +1258,10 @@ AT_SETUP([[parse-gram.y: LALR = IELR]])
 # output files have the same name.
 [cp $abs_top_srcdir/src/parse-gram.y input.y]
 AT_BISON_CHECK([[-o input.c -Dlr.type=lalr input.y]])
-[mv input.c lalr.c]
+[mv input.c expout]
 AT_BISON_CHECK([[-o input.c -Dlr.type=ielr input.y]])
 [mv input.c ielr.c]
-AT_CHECK([[diff -u lalr.c ielr.c]])
+AT_CHECK([[cat ielr.c]], [[0]], [[expout]])
 
 AT_CLEANUP