More VC warning fixes

2 files changed, 5 insertions, 3 deletions

diff --git a/src/build-data/cc/msvc.txt b/src/build-data/cc/msvc.txt
index 24d91b3f3..a854a576d 100644
--- a/src/build-data/cc/msvc.txt
+++ b/src/build-data/cc/msvc.txt
@@ -12,7 +12,7 @@ no_debug_flags "/O2"
 debug_flags "/Od /Zi /DDEBUG"
 check_opt_flags "/O2 /D_CONSOLE"
 lang_flags "/EHs /GR"
-warning_flags "/W3 /wd4275"
+warning_flags "/W3 /wd4275 /wd4267"
 
 shared_flags "/DBOTAN_DLL=__declspec(dllexport)"
 dll_import_flags "__declspec(dllimport)"
diff --git a/src/math/bigint/big_code.cpp b/src/math/bigint/big_code.cpp
index 99cf25aa0..75a310a7c 100644
--- a/src/math/bigint/big_code.cpp
+++ b/src/math/bigint/big_code.cpp
@@ -33,7 +33,9 @@ void BigInt::encode(byte output[], const BigInt& n, Base base)
       const size_t output_size = n.encoded_size(Octal);
       for(size_t j = 0; j != output_size; ++j)
          {
-         output[output_size - 1 - j] = Charset::digit2char(copy % 8);
+         output[output_size - 1 - j] =
+            Charset::digit2char(static_cast<byte>(copy % 8));
+
          copy /= 8;
          }
       }
@@ -47,7 +49,7 @@ void BigInt::encode(byte output[], const BigInt& n, Base base)
          {
          divide(copy, 10, copy, remainder);
          output[output_size - 1 - j] =
-            Charset::digit2char(remainder.word_at(0));
+            Charset::digit2char(static_cast<byte>(remainder.word_at(0)));
          if(copy.is_zero())
             break;
          }