Revert r41662 and the part of 41552 that originally caused the problem

(calling ftell(stdin) doesn't seem defined).  So we won't test errors
from ftell unless we can do it portably.

Lib/test/test_file.py

@@ -107,13 +107,6 @@ except IOError:
 else:
     print "should not be able to seek on sys.stdin"
 
-try:
-    sys.stdin.tell()
-except IOError:
-    pass
-else:
-    print "should not be able to tell on sys.stdin"
-
 try:
     sys.stdin.truncate()
 except IOError:

Misc/NEWS

@@ -12,9 +12,6 @@ What's New in Python 2.5 alpha 1?
 Core and builtins
 -----------------
 
-- Added a workaround for file.tell() to raise IOError when the file
-  is a tty on every platforms as documented in our library reference.
-
 - Patch #1350409: Work around signal handling bug in Visual Studio 2005.
 
 - Bug #1281408: Py_BuildValue now works correct even with unsigned longs

Objects/fileobject.c

@@ -482,13 +482,6 @@ _portable_fseek(FILE *fp, Py_off_t offset, int whence)
 static Py_off_t
 _portable_ftell(FILE* fp)
 {
-#ifdef HAVE_BROKEN_FTELL
-	/* ftell doesn't fail for tty fds on FreeBSD and some others */
-	if (isatty(fileno(fp))) {
-		errno = ESPIPE;
-		return -1;
-	}
-#endif
 #if !defined(HAVE_LARGEFILE_SUPPORT)
 	return ftell(fp);
 #elif defined(HAVE_FTELLO) && SIZEOF_OFF_T >= 8

configure

 #! /bin/sh
-# From configure.in Revision: 41662 .
+# From configure.in Revision: 39267 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.59 for python 2.5.
 #
@@ -20118,67 +20118,6 @@ _ACEOF
 
 fi
 
-echo "$as_me:$LINENO: checking for broken ftell()" >&5
-echo $ECHO_N "checking for broken ftell()... $ECHO_C" >&6
-if test "${ac_cv_broken_ftell+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-if test "$cross_compiling" = yes; then
-  ac_cv_broken_ftell=no
-else
-  cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-#include <stdio.h>
-int main()
-{
-	long val = ftell(stdin);
-	if (val != -1)
-		exit(0);
-	exit(1);
-}
-
-_ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_broken_ftell=yes
-else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-( exit $ac_status )
-ac_cv_broken_ftell=no
-fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
-fi
-fi
-
-echo "$as_me:$LINENO: result: $ac_cv_broken_ftell" >&5
-echo "${ECHO_T}$ac_cv_broken_ftell" >&6
-if test "$ac_cv_broken_ftell" = yes
-then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_BROKEN_FTELL 1
-_ACEOF
-
-fi
-
 # Before we can test tzset, we need to check if struct tm has a tm_zone
 # (which is not required by ISO C or UNIX spec) and/or if we support
 # tzname[]

configure.in

@@ -2955,28 +2955,6 @@ then
       [Define if poll() sets errno on invalid file descriptors.])
 fi
 
-AC_MSG_CHECKING(for broken ftell())
-AC_CACHE_VAL(ac_cv_broken_ftell, [
-AC_TRY_RUN([
-#include <stdio.h>
-int main()
-{
-	long val = ftell(stdin);
-	if (val != -1)
-		exit(0);
-	exit(1);
-}
-],
-ac_cv_broken_ftell=yes,
-ac_cv_broken_ftell=no,
-ac_cv_broken_ftell=no)])
-AC_MSG_RESULT($ac_cv_broken_ftell)
-if test "$ac_cv_broken_ftell" = yes
-then
-  AC_DEFINE(HAVE_BROKEN_FTELL, 1,
-  [Define if ftell() set errno on tty files.])
-fi
-
 # Before we can test tzset, we need to check if struct tm has a tm_zone 
 # (which is not required by ISO C or UNIX spec) and/or if we support
 # tzname[]

pyconfig.h.in

@@ -46,9 +46,6 @@
 /* Define to 1 if you have the <bluetooth.h> header file. */
 #undef HAVE_BLUETOOTH_H
 
-/* Define if ftell() set errno on tty files. */
-#undef HAVE_BROKEN_FTELL
-
 /* Define if nice() returns success/failure instead of the new priority. */
 #undef HAVE_BROKEN_NICE