1 files changed, 13 insertions, 0 deletions
diff --git a/cm-demo.c b/cm-demo.c
index 7a5a3e2..877e662 100644
--- a/cm-demo.c
+++ b/cm-demo.c
@@ -1,8 +1,21 @@
+#include <stdarg.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "cheesemap.h"
 
+_Noreturn void panic_impl(const char* file, uint32_t line, const char* fmt,
+                          ...) {
+  fprintf(stderr, "Panic at %s:%u: ", file, line);
+  va_list args;
+  va_start(args, fmt);
+  vfprintf(stderr, fmt, args);
+  va_end(args);
+  fprintf(stderr, "\n");
+  abort();
+}
+
 // Convenience macro for array length
 #define countof(arr) (sizeof(arr) / sizeof(*(arr)))