Tom G. Christensen wrote:
> + rm -f t-select-in.tmp
> + ./test-select-fd r 0 t-select-in.tmp
> + cat t-select-in.tmp
> + test 0 = 1
> + exit 1
Thanks. So apparently Solaris 2.6 has a problem with select() of /dev/null.
I verified that the test passes on Solaris 7.
It's probably not worth working around it. I'm only adding a mention of it
to the documentation.
2008-12-20 Bruno Haible <br...@clisp.org>
* doc/posix-functions/select.texi: Mention Solaris 2.6 bug with
/dev/null.
* tests/test-select-in.sh: Likewise.
*** doc/posix-functions/select.texi.orig 2008-12-20 20:42:10.000000000
+0100
--- doc/posix-functions/select.texi 2008-12-20 20:40:59.000000000 +0100
***************
*** 28,33 ****
--- 28,37 ----
On BeOS, @code{select} can only be called on descriptors created by the
@code{socket} function, not on regular file descriptors.
@item
+ On Solaris 2.6 and older, @code{select} applied to a file descriptor opened
+ for reading and associated with @code{/dev/null} hangs, waiting for input,
+ when instead it should return immediately.
+ @item
On Linux, when some file descriptor refers to a regular file, @code{select}
may fail, setting @code{errno} to @code{EBADF}.
@end itemize
*** tests/test-select-in.sh.orig 2008-12-20 20:42:10.000000000 +0100
--- tests/test-select-in.sh 2008-12-20 20:38:34.000000000 +0100
***************
*** 1,6 ****
--- 1,9 ----
#!/bin/sh
# Test select() on file descriptors opened for reading.
+ # This test is known to fail on Solaris 2.6 and older, due to its handling
+ # of /dev/null.
+
tmpfiles=""
trap 'rm -fr $tmpfiles' 1 2 3 15
***************
*** 23,28 ****
--- 26,32 ----
test `cat t-select-in.tmp` = "1" || exit 1
# Special files.
+ # This part of the test is known to fail on Solaris 2.6 and older.
rm -f t-select-in.tmp
./test-select-fd${EXEEXT} r 0 t-select-in.tmp < /dev/null
