From 0711c1f4eda3f10d8295ca0d9eb50e1a380baa86 Mon Sep 17 00:00:00 2001
From: Ron Yorston <rmy@pobox.com>
Date: Wed, 27 May 2015 15:05:11 +0100
Subject: win32: fix waitpid implementation

_cwait requires a process handle, not a pid.
---
 win32/process.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/win32/process.c b/win32/process.c
index 462731a2d..dc9e98305 100644
--- a/win32/process.c
+++ b/win32/process.c
@@ -3,9 +3,18 @@
 
 int waitpid(pid_t pid, int *status, unsigned options)
 {
+	HANDLE proc;
+	int ret;
+
 	/* Windows does not understand parent-child */
-	if (options == 0 && pid != -1)
-		return _cwait(status, pid, 0);
+	if (options == 0 && pid != -1) {
+		if ( (proc=OpenProcess(SYNCHRONIZE|PROCESS_QUERY_INFORMATION,
+						FALSE, pid)) != NULL ) {
+			ret = _cwait(status, proc, 0);
+			CloseHandle(proc);
+			return ret;
+		}
+	}
 	errno = EINVAL;
 	return -1;
 }
-- 
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