X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Ftypes.h;h=02e2d45515a1588b8bfbd7792f7fbc4381750371;hp=cf0b3f953dedcad5826f47c21a2deb2fd6000699;hb=caef31921900e092616c56193e37201b08baa875;hpb=2f47844c7cb34c7de5b5d41cda10b7d8736a20bc

diff --git a/src/types.h b/src/types.h
index cf0b3f95..02e2d455 100644
--- a/src/types.h
+++ b/src/types.h
@@ -35,6 +35,7 @@
 ///               | only in 64-bit mode. For compiling requires hardware with
 ///               | popcnt support.
 
+#include <cctype>
 #include <climits>
 #include <cstdlib>