--- OLD/alloc.c	Thu Jan  1 00:00:00 1970
+++ NEW/alloc.c	Thu Jan  1 00:00:00 1970
@@ -52,14 +52,16 @@
 DEFINE_ALLOCATOR(object, union any_object)
 
 #ifdef NO_C99_FORMAT
-#define SZ_FMT "%u"
+#define SZ_FMT "%lu"
+#define SZ_TYPE unsigned long int
 #else
 #define SZ_FMT "%zu"
+#define SZ_TYPE size_t
 #endif
 
 static void report(const char *name, unsigned int count, size_t size)
 {
-    fprintf(stderr, "%10s: %8u (" SZ_FMT " kB)\n", name, count, size);
+    fprintf(stderr, "%10s: %8u (" SZ_FMT " kB)\n", name, count, (SZ_TYPE)size);
 }
 
 #undef SZ_FMT