From eeb043f5833db03ac3250f9943ba8be0b518432f Mon Sep 17 00:00:00 2001
From: Cody Tapscott <topolarity@tapscott.me>
Date: Fri, 11 Feb 2022 08:46:01 -0700
Subject: [PATCH] Fix big-endian handling in stage1
 bigint_write_twos_complement

---
 src/stage1/bigint.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/stage1/bigint.cpp b/src/stage1/bigint.cpp
index eab0f037cf..e10af08bc4 100644
--- a/src/stage1/bigint.cpp
+++ b/src/stage1/bigint.cpp
@@ -313,12 +313,12 @@ void bigint_write_twos_complement(const BigInt *big_int, uint8_t *buf, size_t bi
             }
 
             if (digit_index == 0) break;
-            digit_index -= 1;
             if (digit_index == last_digit_index) {
                 buf_index += bytes_in_last_digit;
             } else {
                 buf_index += 8;
             }
+            digit_index -= 1;
         }
     } else {
         size_t digit_count = (bit_count + 63) / 64;