/* XEmacs: the current mmap-based ralloc handles small blocks very
poorly, so we disable it here. */
-#if (defined (REL_ALLOC) && defined (HAVE_MMAP)) || defined(DOUG_LEA_MALLOC)
+#if (defined (REL_ALLOC) && defined (HAVE_MMAP)) || defined(HAVE_GLIBC)
# undef REL_ALLOC
#endif