--- libmalloc/libmalloc-474.0.13/src/base.h
+++ libmalloc/libmalloc-409.81.2/src/base.h
@@ -90,21 +90,11 @@
 #define MALLOC_UNUSED __attribute__((unused))
 #define MALLOC_NORETURN __attribute__((noreturn))
 #define MALLOC_COLD __attribute__((cold))
-#define MALLOC_NOESCAPE __attribute__((noescape))
 #define CHECK_MAGAZINE_PTR_LOCKED(szone, mag_ptr, fun) {}
 
 #define SCRIBBLE_BYTE 0xaa /* allocated scribble */
 #define SCRABBLE_BYTE 0x55 /* free()'d scribble */
 #define SCRUBBLE_BYTE 0xdd /* madvise(..., MADV_FREE) scriblle */
-
-#undef KiB
-#undef MiB
-#undef GiB
-#undef TiB
-#define KiB(x) ((uint64_t)(x) << 10)
-#define MiB(x) ((uint64_t)(x) << 20)
-#define GiB(x) ((uint64_t)(x) << 30)
-#define TiB(x) ((uint64_t)(x) << 40)
 
 #define NDEBUG 1
 #define trunc_page_quanta(x) trunc_page((x))