Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
---
 compat/mingw.c |    6 ++++++
 compat/mingw.h |    1 +
 2 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/compat/mingw.c b/compat/mingw.c
index e2e3c54..2e7c644 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -1550,6 +1550,12 @@ pid_t waitpid(pid_t pid, int *status, unsigned options)
 		return -1;
 	}
 
+	if (pid > 0 && options & WNOHANG) {
+		if (WAIT_OBJECT_0 != WaitForSingleObject((HANDLE)pid, 0))
+			return 0;
+		options &= ~WNOHANG;
+	}
+
 	if (options == 0) {
 		int i;
 		if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
diff --git a/compat/mingw.h b/compat/mingw.h
index 7c4eeea..379d7bf 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -140,6 +140,7 @@ static inline int mingw_unlink(const char *pathname)
 }
 #define unlink mingw_unlink
 
+#define WNOHANG 1
 pid_t waitpid(pid_t pid, int *status, unsigned options);
 
 #ifndef NO_OPENSSL
-- 
1.7.3.2.161.gd6e00

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