--- ftgl-2.4.0/src/FTContour.cpp	2019-02-07 22:39:58.000000000 +0100
+++ ftgl/src/FTContour.cpp	2025-03-13 16:49:54.335142438 +0100
@@ -174,7 +174,7 @@
 }
 
 
-FTContour::FTContour(FT_Vector* contour, char* tags, unsigned int n)
+FTContour::FTContour(FT_Vector* contour, unsigned char* tags, unsigned int n)
 {
     FTPoint prev, cur(contour[(n - 1) % n]), next(contour[0]);
     double olddir, dir = atan2((next - cur).Y(), (next - cur).X());