X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsquare.h;h=9683e930652e5f3bf3cd11a413ec3474c7b6690d;hp=4f024c961df33b8c3c40caed7617b1b14196ccf9;hb=44b497a9728e27489e0da3e41957402f9efed7fc;hpb=683595fee15a1d8ceeb1bbd577d96ed9c0f8aaaa

diff --git a/src/square.h b/src/square.h
index 4f024c96..9683e930 100644
--- a/src/square.h
+++ b/src/square.h
@@ -164,7 +164,7 @@ inline File file_from_char(char c) {
 }
 
 inline char file_to_char(File f) {
-  return char(f - FILE_A) + 'a';
+  return char(f - FILE_A + int('a'));
 }
 
 inline Rank rank_from_char(char c) {
@@ -172,7 +172,7 @@ inline Rank rank_from_char(char c) {
 }
 
 inline char rank_to_char(Rank r) {
-  return char(r - RANK_1) + '1';
+  return char(r - RANK_1 + int('1'));
 }
 
 inline Square square_from_string(const std::string& str) {