From 5b809a31047111dab9dd11f48f2bb7db00f0e23e Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Fri, 23 Nov 2007 12:18:45 +0000
Subject: make 'checkdied' in runtests.pl more robust

---
 tests/runtests.pl | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/runtests.pl b/tests/runtests.pl
index f2ed1650d..9e5a8674c 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -258,8 +258,11 @@ $ENV{'CURL_CA_BUNDLE'}=undef;
 sub checkdied {
     use POSIX ":sys_wait_h";
     my $pid = $_[0];
+    if(not defined $pid || $pid <= 0) {
+        return 0;
+    }
     my $rc = waitpid($pid, &WNOHANG);
-    return $rc == $pid;
+    return ($rc == $pid)?1:0;
 }
 
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