From 3daa8369c78cde9f4630bae7d5328cc974d349e5 Mon Sep 17 00:00:00 2001
From: toddouska <todd@wolfssl.com>
Date: Wed, 11 Mar 2015 17:52:11 -0700
Subject: [PATCH] allow XTOUPPER to work with macros that don't like signed
 types

---
 wolfcrypt/src/integer.c | 2 +-
 wolfcrypt/src/tfm.c     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/wolfcrypt/src/integer.c b/wolfcrypt/src/integer.c
index e3c00444b..b68ec7ea7 100644
--- a/wolfcrypt/src/integer.c
+++ b/wolfcrypt/src/integer.c
@@ -4454,7 +4454,7 @@ int mp_read_radix (mp_int * a, const char *str, int radix)
      * this allows numbers like 1AB and 1ab to represent the same  value
      * [e.g. in hex]
      */
-    ch = (char) ((radix < 36) ? XTOUPPER(*str) : *str);
+    ch = (char) ((radix < 36) ? XTOUPPER((unsigned char)*str) : *str);
     for (y = 0; y < 64; y++) {
       if (ch == mp_s_rmap[y]) {
          break;
diff --git a/wolfcrypt/src/tfm.c b/wolfcrypt/src/tfm.c
index 8ac48323a..54bce6ac9 100644
--- a/wolfcrypt/src/tfm.c
+++ b/wolfcrypt/src/tfm.c
@@ -2478,7 +2478,7 @@ static int fp_read_radix(fp_int *a, const char *str, int radix)
      * this allows numbers like 1AB and 1ab to represent the same  value
      * [e.g. in hex]
      */
-    ch = (char) ((radix < 36) ? XTOUPPER(*str) : *str);
+    ch = (char) ((radix < 36) ? XTOUPPER((unsigned char)*str) : *str);
     for (y = 0; y < 64; y++) {
       if (ch == fp_s_rmap[y]) {
          break;