From c5fd143edb85d0c181e21a429f9e29d12a611831 Mon Sep 17 00:00:00 2001
From: practicalswift <practicalswift@users.noreply.github.com>
Date: Mon, 29 Oct 2018 09:15:11 +0100
Subject: [PATCH] Use ToLower(...) instead of std::tolower

---
 src/uint256.cpp                     | 2 +-
 src/util/system.cpp                 | 2 +-
 test/lint/lint-locale-dependence.sh | 2 --
 3 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/uint256.cpp b/src/uint256.cpp
index d9da668036..b723f9ee54 100644
--- a/src/uint256.cpp
+++ b/src/uint256.cpp
@@ -33,7 +33,7 @@ void base_blob<BITS>::SetHex(const char* psz)
         psz++;
 
     // skip 0x
-    if (psz[0] == '0' && tolower(psz[1]) == 'x')
+    if (psz[0] == '0' && ToLower((unsigned char)psz[1]) == 'x')
         psz += 2;
 
     // hex string to uint
diff --git a/src/util/system.cpp b/src/util/system.cpp
index 4f5dd2d6e9..633b616dc3 100644
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -422,7 +422,7 @@ bool ArgsManager::ParseParameters(int argc, const char* const argv[], std::strin
             key.erase(is_index);
         }
 #ifdef WIN32
-        std::transform(key.begin(), key.end(), key.begin(), ::tolower);
+        std::transform(key.begin(), key.end(), key.begin(), ToLower);
         if (key[0] == '/')
             key[0] = '-';
 #endif
diff --git a/test/lint/lint-locale-dependence.sh b/test/lint/lint-locale-dependence.sh
index 59881ce882..2765ebe5c7 100755
--- a/test/lint/lint-locale-dependence.sh
+++ b/test/lint/lint-locale-dependence.sh
@@ -15,10 +15,8 @@ KNOWN_VIOLATIONS=(
     "src/test/getarg_tests.cpp.*split"
     "src/torcontrol.cpp:.*atoi"
     "src/torcontrol.cpp:.*strtol"
-    "src/uint256.cpp:.*tolower"
     "src/util/system.cpp:.*atoi"
     "src/util/system.cpp:.*fprintf"
-    "src/util/system.cpp:.*tolower"
     "src/util/strencodings.cpp:.*atoi"
     "src/util/strencodings.cpp:.*strtol"
     "src/util/strencodings.cpp:.*strtoul"