From 8519988d57b4f9cb5ae50b6c9fc27d46cf165fef Mon Sep 17 00:00:00 2001
From: Sean Parkinson <sean@wolfssl.com>
Date: Thu, 27 Oct 2022 10:19:21 +1000
Subject: [PATCH] SP int: guess 64-bit type

When ULLONG_MAX not defined and long is the 32-bit type, speculatively
use long long as the 64-bit type.
---
 wolfssl/wolfcrypt/sp_int.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/wolfssl/wolfcrypt/sp_int.h b/wolfssl/wolfcrypt/sp_int.h
index 018d03daa..2dc89cd73 100644
--- a/wolfssl/wolfcrypt/sp_int.h
+++ b/wolfssl/wolfcrypt/sp_int.h
@@ -146,6 +146,11 @@ extern "C" {
     #else
         #error "Size of unsigned long long not detected"
     #endif
+#elif SP_ULONG_BITS == 32
+    /* Speculatively use long long as the 64-bit type as we don't have one
+     * otherwise. */
+    typedef unsigned long long sp_uint64;
+    typedef          long long  sp_int64;
 #else
     #define SP_ULLONG_BITS    0
 #endif