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Hash: SHA1
Configuration Information:
Machine: i686
OS: cygwin
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash.exe' -DCONF_HOSTTYPE='i686'
- -DCONF_OSTYPE='cygwin' -DCONF_MACHTYPE='i686-pc-cygwin' -DCONF_VENDOR='pc'
- -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H
- -DRECYCLES_PIDS -I. -I/tmp/bash-3.2 -I/tmp/bash-3.2/include
- -I/tmp/bash-3.2/lib -O2
uname output: CYGWIN_NT-5.1 LOUNGE 1.5.21(0.156/4/2) 2006-07-30 14:21 i686
Cygwin
Machine Type: i686-pc-cygwin
Bash Version: 3.2
Patch Level: 5
Release Status: release
Description:
The configure check for whether /dev/stdin is available is flawed,
since it invokes 'test -r /dev/stdin </dev/null'. However, when
configuring with a version of bash that already fakes /dev/stdin, this
means that the next configure run on bash will assume that /dev/stdin.
Repeat-By:
configure and install bash 3.2.5 on cygwin (or any other platform
without /dev/stdin). Then reconfigure. Compare the two resulting
config.h; they differ by:
- --- /tmp/bash/bash-3.2-4/.build/config.h 2006-10-24
+++ config.h 2006-11-09 06:13:01.687500000 -0700
07:17:31.125000000 -0600
@@ -473,7 +473,7 @@
#define DEV_FD_PREFIX "/proc/self/fd/"
/* Define if you have the /dev/stdin device. */
- -/* #undef HAVE_DEV_STDIN */
+#define HAVE_DEV_STDIN 1
/* Type and behavior of signal handling functions. */
And with that difference, the new bash fails:
$ echo $BASH_VERSION > /dev/stdout
$
where the old bash succeeded
$ echo $BASH_VERSION > /dev/stdout
3.2.1(4)-release
$
Fix:
Apply this patch and rerun autoconf before configuring. Using
/bin/test instead of test bypasses the bash builtin, and thus bypasses an
installed bash's internal special-casing of /dev/stdin.
- --- aclocal.m4.orig 2006-11-15 06:35:11.780250000 -0700
+++ aclocal.m4 2006-11-15 06:35:38.577125000 -0700
@@ -1574,7 +1574,7 @@
AC_CACHE_VAL(bash_cv_dev_stdin,
[if test -d /dev/fd && test -r /dev/stdin < /dev/null; then
bash_cv_dev_stdin=present
- - elif test -d /proc/self/fd && test -r /dev/stdin < /dev/null; then
+ elif test -d /proc/self/fd && /bin/test -r /dev/stdin < /dev/null; then
bash_cv_dev_stdin=present
else
bash_cv_dev_stdin=absent
- --
Life is short - so eat dessert first!
Eric Blake [EMAIL PROTECTED]
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