Re: bug in zsh wait builtin - rhbz#1150541

[Peter Stephenson <p.w.stephenson@ntlworld.com>]

Here's a test.  The tortuous explanation points out that we don't
absolutely guarantee on every run of the test that it's testing the
feature in question, but statistically it will be tested more often than
not.  So Axel will spot failures even if no one else does :-).

The changes in quotes earlier are just to deconfuse Emacs shell mode.

> Word not found in the Dictionary and Encyclopedia.

So what is the opposite of confuse?

pws

diff --git a/Test/A05execution.ztst b/Test/A05execution.ztst
index ca97f4f..838cd74 100644
--- a/Test/A05execution.ztst
+++ b/Test/A05execution.ztst
@@ -190,9 +190,9 @@
                    print "${pipestatus[@]}")
 	ZTST_hashmark
   done | sort | uniq -c | sed 's/^ *//'
-0:Check whether `$pipestatus[]' behaves.
+0:Check whether '$pipestatus[]' behaves.
 >2048 2 1 0
-F:This test checks for a bug in `$pipestatus[]' handling.  If it breaks then
+F:This test checks for a bug in '$pipestatus[]' handling.  If it breaks then
 F:the bug is still there or it reappeared. See workers-29973 for details.
 
   { setopt MONITOR } 2>/dev/null
@@ -244,3 +244,29 @@ F:anonymous function, and a descriptor leak when backgrounding a pipeline
 >autoload_redir () {
 >	print Autoloaded ksh style
 >} > autoload.log
+
+# This tests that we record the status of processes that have already exited
+# for when we wait for them.
+#
+# Actually, we don't guarantee here that the jobs have already exited, but
+# the order of the waits means it's highly likely we do need to a recall
+# previous status, barring accidents which shouldn't happen very often.  In
+# other words, we relying on the test working repeatedly rather than just
+# once.  The monitor option is irrelevant to the logic, so we'll make
+# our job easier by turning it off.
+  unsetopt monitor
+  (exit 1) &
+  one=$!
+  (exit 2) &
+  two=$!
+  (exit 3) &
+  three=$!
+  wait $three
+  print $?
+  wait $two
+  print $?
+  wait $one
+1:The status of recently exited background jobs is recorded
+>3
+>2
+