Some Korn shells, when a child process die due to signal number
n, can leave in $? an exit status of 256+n instead of the more
standard 128+n. Apparently, both behaviours are allowed by
POSIX, so be prepared to handle them both.
This change has been motivated by a testsuite failure on Debian
with the AT&T Korn Shell version 93u-1.
* lib/tap-driver.sh (get_test_exit_message): Handle the described
Korn Shell behaviour too.
($scriptversion): Update.
---
ChangeLog | 13 +++++++++++++
lib/tap-driver.sh | 12 ++++++++++--
2 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 4fb02f5..ad6e9d6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2011-09-28 Stefano Lattarini <stefano.lattar...@gmail.com>
+
+ tap/awk: handle exit statuses > 256 (seen on few korn shells)
+ Some Korn shells, when a child process die due to signal number
+ n, can leave in $? an exit status of 256+n instead of the more
+ standard 128+n. Apparently, both behaviours are allowed by
+ POSIX, so be prepared to handle them both.
+ This change has been motivated by a testsuite failure on Debian
+ with the AT&T Korn Shell version 93u-1.
+ * lib/tap-driver.sh (get_test_exit_message): Handle the described
+ Korn Shell behaviour too.
+ ($scriptversion): Update.
+
2011-09-24 Stefano Lattarini <stefano.lattar...@gmail.com>
uninstall: "make uninstall" before "make install" works
diff --git a/lib/tap-driver.sh b/lib/tap-driver.sh
index 44317d9..e30c803 100755
--- a/lib/tap-driver.sh
+++ b/lib/tap-driver.sh
@@ -23,7 +23,7 @@
# bugs to <bug-autom...@gnu.org> or send patches to
# <automake-patches@gnu.org>.
-scriptversion=2011-08-25.11; # UTC
+scriptversion=2011-09-28.14; # UTC
# Make unconditional expansion of undefined variables an error. This
# helps a lot in preventing typo-related bugs.
@@ -440,7 +440,15 @@ function get_test_exit_message(status)
exit_details = " (command not found?)"
else if (status >= 128 && status <= 255)
exit_details = sprintf(" (terminated by signal %d?)", status - 128)
- else if (status >= 256)
+ else if (status > 256 && status <= 384)
+ # We used to report an "abnormal termination" here, but some Korn
+ # shells, when a child process die due to signal number n, can leave
+ # in $? an exit status of 256+n instead of the more standard 128+n.
+ # Apparently, both behaviours are allowed by POSIX (2008), so be
+ # prepared to handle them both.
+ exit_details = sprintf(" (terminated by signal %d?)", status - 256)
+ else
+ # Never seen in practice.
exit_details = " (abnormal termination)"
return sprintf("exited with status %d%s", status, exit_details)
}
--
1.7.2.3
