From 7e53747509cc8521e47641073754dfdcd2d1c798 Mon Sep 17 00:00:00 2001
From: Rafael Rivera <rafael@withinwindows.com>
Date: Mon, 3 May 2021 12:31:52 -0700
Subject: [PATCH] Fallback onto TEMP if TMPDIR undefined (#441)

---
 misc.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/misc.c b/misc.c
index 36c221ed7..8bed8fc78 100644
--- a/misc.c
+++ b/misc.c
@@ -1739,7 +1739,15 @@ mktemp_proto(char *s, size_t len)
 	const char *tmpdir;
 	int r;
 
-	if ((tmpdir = getenv("TMPDIR")) != NULL) {
+	tmpdir = getenv("TMPDIR");
+
+#ifdef WINDOWS
+	if (tmpdir == NULL) {
+		tmpdir = getenv("TEMP");
+	}
+#endif
+
+	if (tmpdir != NULL) {
 		r = snprintf(s, len, "%s/ssh-XXXXXXXXXXXX", tmpdir);
 		if (r > 0 && (size_t)r < len)
 			return;