From dee01cfe9bd3571cd869f22d29e014d2a293e2d7 Mon Sep 17 00:00:00 2001
From: David Garske <david@wolfssl.com>
Date: Fri, 23 Dec 2022 13:22:40 -0800
Subject: [PATCH] Fixes SP math all build issue with small-stack and no
 hardening. Fixes ZD15388

---
 wolfcrypt/src/sp_int.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/wolfcrypt/src/sp_int.c b/wolfcrypt/src/sp_int.c
index 29efb617a..41d658056 100644
--- a/wolfcrypt/src/sp_int.c
+++ b/wolfcrypt/src/sp_int.c
@@ -12692,7 +12692,11 @@ static int _sp_exptmod_base_2(const sp_int* e, int digits, const sp_int* m,
     sp_print(r, "rme");
 #endif
 
+#ifndef WC_NO_HARDEN
     FREE_SP_INT_ARRAY(d, NULL);
+#else
+    FREE_SP_INT(tr, m->used * 2 + 1);
+#endif
     return err;
 }
 #endif