MSVC doesn't have isascii(), but it does have _isascii().

diff --git a/portability.h b/portability.h
index b36125421390ef3483b29f0017d22b7076c29efa..6786d570f7040a2c7084fa1c92d1d616436951bc 100644 (file)
--- a/portability.h
+++ b/portability.h
@@ -88,6 +88,8 @@ extern "C" {
 #endif
 
 #ifdef _MSC_VER
+  #define isascii      _isascii
+
   /*
    * If <crtdbg.h> has been included, and _DEBUG is defined, and
    * __STDC__ is zero, <crtdbg.h> will define strdup() to call