X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Freaddir.m4;h=d2b1a557e121dca3b90dbaf10d4bc5d2001ae518;hb=79aa212e951d673736d788a5ec4830d2ade928cb;hp=c73c15675dae3beae67acfc4c4b8edbf22389030;hpb=62928ecd47ba772e3650eb25f42e066467814e23;p=gnulib.git

diff --git a/m4/readdir.m4 b/m4/readdir.m4
index c73c15675..d2b1a557e 100644
--- a/m4/readdir.m4
+++ b/m4/readdir.m4
@@ -1,6 +1,16 @@
 #serial 1
 
-dnl FIXME: describe
+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 Detect the problem by creating a directory containing 300 files (254 not
+dnl counting . and .. is the minimum) and see if a loop doing `readdir; unlink'
+dnl removes all of them.
+dnl
+dnl Define HAVE_WORKING_READDIR if readdir does *not* have this problem.
+
+dnl Written by Jim Meyering.
 
 AC_DEFUN(jm_FUNC_READDIR,
 [dnl