--- glibc-2.28.old/stdlib/bits/stdlib.h
+++ glibc-2.28/stdlib/bits/stdlib.h
@@ -86,7 +86,7 @@
      But this would only disturb the namespace.  So we define our own
      version here.  */
 #define __STDLIB_MB_LEN_MAX	16
-#if defined MB_LEN_MAX && MB_LEN_MAX != __STDLIB_MB_LEN_MAX
+#if 0 && defined MB_LEN_MAX && MB_LEN_MAX != __STDLIB_MB_LEN_MAX
 # error "Assumed value of MB_LEN_MAX wrong"
 #endif
   if (__bos (__s) != (size_t) -1 && __STDLIB_MB_LEN_MAX > __bos (__s))