- do not use strtol for parsing critical values that can get large.

This function will truncate everything that is larger than LONG_MAX or smaller than LONG_MIN to fit into a long variable, but longs are 32 bit on Windows and 64 bit elsewhere, so to ensure consistency and the ability to parse larger values better use strtoll which does not truncate 32 bit values.

src/zstring.cpp

@@ -1104,12 +1104,12 @@ digits		= [0-9];
 
 long FString::ToLong (int base) const
 {
-	return strtol (Chars, NULL, base);
+	return (long)strtoll (Chars, NULL, base);
 }
 
 unsigned long FString::ToULong (int base) const
 {
-	return strtoul (Chars, NULL, base);
+	return (unsigned long)strtoull (Chars, NULL, base);
 }
 
 double FString::ToDouble () const