--- adlmidi-1.2.6.2/puzzlegame.inc.orig	2020-10-06 10:37:55.001815403 +0200
+++ adlmidi-1.2.6.2/puzzlegame.inc	2020-10-06 10:38:10.965969535 +0200
@@ -31,7 +31,7 @@ namespace ADLMIDI_PuzzleGame
 
     static unsigned long TimerRead()
     {
-        static std::chrono::time_point<std::chrono::system_clock> begin = std::chrono::system_clock::now();
+        static std::chrono::time_point<std::chrono::system_clock> begin = std::chrono::system_clock::now();
         return 519 * std::chrono::duration<double>( std::chrono::system_clock::now() - begin ).count();
     }
     #define Timer TimerRead()
@@ -376,7 +376,7 @@ namespace ADLMIDI_PuzzleGame
 
                     // Find out the extents of this piece, and how many
                     // cells of the piece contribute into full (completed) rows.
-                    char full[4]={-1,-1,-1,-1};
+                    signed char full[4]={-1,-1,-1,-1};
                     int miny=n.y+9, maxy=n.y-9, minx=n.x+9, maxx=n.x-9, num_eroded=0;
                     n>[&](int x,int y) -> bool
                         { if(x < minx) {minx = x;} if(x > maxx) {maxx = x;}