+#serial 7
+
+dnl SunOS's readdir is broken in such a way that rm.c has to add extra code
+dnl to test whether a NULL return value really means there are no more files
+dnl in the directory.
+dnl
+dnl And the rm from coreutils-5.0 exposes a similar problem when there
+dnl are 338 or more files in a directory on a Darwin-6.5 system
+dnl
+dnl Detect the problem by creating a directory containing 500 files (254 not
+dnl counting . and .. is the minimum for SunOS, 338 for Darwin) and see
+dnl if a loop doing `readdir; unlink' removes all of them.
+dnl
+dnl Define HAVE_WORKING_READDIR if readdir does *not* have this problem.
+
+dnl Written by Jim Meyering.
+
+AC_DEFUN([GL_FUNC_READDIR],