Merge branch 'nd/gc-lock-against-each-other'

* nd/gc-lock-against-each-other:
  gc: reject if another gc is running, unless --force is given

1 files changed, 6 insertions, 0 deletions

diff --git a/compat/mingw.c b/compat/mingw.c
index bb92c436f..22ee9ef1c 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -1086,6 +1086,12 @@ int mingw_kill(pid_t pid, int sig)
 		errno = err_win_to_posix(GetLastError());
 		CloseHandle(h);
 		return -1;
+	} else if (pid > 0 && sig == 0) {
+		HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
+		if (h) {
+			CloseHandle(h);
+			return 0;
+		}
 	}
 
 	errno = EINVAL;