Thanks for reporting that; I pushed this slightly different patch:
* tests/epipe: Don't loop forever if the bug is present.
Problem reported by Jaroslav Skarvada.
---
tests/epipe | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/tests/epipe b/tests/epipe
index 1d9ef05..3b568e3 100755
--- a/tests/epipe
+++ b/tests/epipe
@@ -5,8 +5,17 @@
. "${srcdir=.}/init.sh"; path_prepend_ ../src
if
+ # Use awk to output a bounded amount of data to the grep in question,
+ # so that the test doesn't loop forever if grep is buggy.
+ # Use an explicit /dev/null for the benefit of older (pre-POSIX) awks.
+ #
+ # Carefully close fd 3 when not needed, as a sanity check.
+ #
+ # Do not use "trap - PIPE" or "trap 'something' PIPE" here, since we may
+ # be running in an environment where SIGPIPE is ignored, and in such an
+ # environment POSIX says that "trap '' PIPE" is all we can do portably.
(
- while ls -al; do :; done 3>&- |
+ ${AWK-awk} 'BEGIN { for (i=0; i<1000000; i++) print i; }' /dev/null 3>&- |
(trap '' PIPE; exec grep . 2>&3 3>&-) |
:
) 3>&1 | (
--
1.7.6.5
