diff --git a/glob/glob.c b/glob/glob.c
index f3911bcd861..6cb76e8e162 100644
--- a/glob/glob.c
+++ b/glob/glob.c
@@ -208,29 +208,8 @@ my_realloc (p, n)
 #endif /* __GNU_LIBRARY__ || __DJGPP__ */
 
 
-#if !defined __alloca && !defined __GNU_LIBRARY__
-
-# ifdef	__GNUC__
-#  undef alloca
-#  define alloca(n)	__builtin_alloca (n)
-# else	/* Not GCC.  */
-#  ifdef HAVE_ALLOCA_H
-#   include <alloca.h>
-#  else	/* Not HAVE_ALLOCA_H.  */
-#   ifndef _AIX
-#    ifdef WINDOWS32
-#     include <malloc.h>
-#    else
-extern char *alloca ();
-#    endif /* WINDOWS32 */
-#   endif /* Not _AIX.  */
-#  endif /* sparc or HAVE_ALLOCA_H.  */
-# endif	/* GCC.  */
-
 # define __alloca	alloca
 
-#endif
-
 #ifndef __GNU_LIBRARY__
 # define __stat stat
 # ifdef STAT_MACROS_BROKEN