...

src/keyboard.c

@@ -3,6 +3,7 @@
 #include "kernel.h"
 #include "vga.h"
 #include "util.h"
+#include <stddef.h>
 
 #define SCANCODE_LEFT_SHIFT 42
 #define SCANCODE_RIGHT_SHIFT 54
@@ -31,7 +32,7 @@ bool caps_lock = false;
 
 // todo(nub): make dynamic when a memory allocator is implemented
 static keyboard_handler_t keyboard_handlers[KEYBOARD_HANDLERS_LENGTH];
-static int handler_index = 0;
+static size_t handler_index = 0;
 
 char scan_code_to_ascii(uint8_t scan_code)
 {