diff -up bison-2.4.2/tests/skeletons.at\~ bison-2.4.2/tests/skeletons.at
--- bison-2.4.2/tests/skeletons.at~	2010-02-23 01:04:09.000000000 +0100
+++ bison-2.4.2/tests/skeletons.at	2010-04-08 20:28:49.000000000 +0200
@@ -288,45 +288,3 @@ foo.y:1.5-6: fatal error: M4 should exit
 ]])
 
 AT_CLEANUP
-
-
-## ------------------------------------------------ ##
-## Fatal errors but M4 continues producing output.  ##
-## ------------------------------------------------ ##
-
-# At one time, if Bison encountered a fatal error during M4 processing,
-# Bison failed to drain M4's output pipe.  The result was a SIGPIPE.
-# On some platforms, the default disposition for SIGPIPE is terminate,
-# which was fine.  On others, it's ignore, which caused M4 to report
-# the broken pipe to the user, but we don't want to bother the user with
-# that.
-
-# There is a race condition somewhere.  That is, before the associated
-# fix, running this test group many times in a row would occasionally
-# produce a pass among all the failures.
-
-AT_SETUP([[Fatal errors but M4 continues producing output]])
-
-AT_DATA([[gen-skel.pl]],
-[[use warnings;
-use strict;
-my $M4 = "m4";
-my $DNL = "d"."nl";
-print "${M4}_divert_push(0)$DNL\n";
-print '@output(@,@)', "\n";
-(print "garbage"x10, "\n") for (1..1000);
-print "${M4}_divert_pop(0)\n";
-]])
-AT_CHECK([[perl gen-skel.pl > skel.c || exit 77]])
-
-AT_DATA([[input.y]],
-[[%skeleton "./skel.c"
-%%
-start: ;
-]])
-
-AT_BISON_CHECK([[input.y]], [[1]], [[]],
-[[input.y: fatal error: too many arguments for @output directive in skeleton
-]])
-
-AT_CLEANUP

Diff finished.  Thu Apr  8 20:28:56 2010