Add a workaround for file.ftell() to raise IOError for ttys.

ftell(3) on BSD doesn't set errno even for ttys and returns useless
values.

1 files changed, 62 insertions, 1 deletions

diff --git a/configure b/configure
index 2900799..83078e7 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 39267 .
+# From configure.in Revision: 41662 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.59 for python 2.5.
 #
@@ -20118,6 +20118,67 @@ _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[]