[Tcl-bugs] [ expect-Bugs-1686964 ] stdin is not blocking for input on solaris9 OS

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Bugs item #1686964, was opened at 2007-03-23 16:56
Message generated for change (Comment added) made by sf-robot
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Category: None
Group: None
>Status: Closed
Resolution: Out of Date
Priority: 5
Private: No
Submitted By: M. Saha (monasaha)
Assigned to: Nobody/Anonymous (nobody)
Summary: stdin is not blocking for input on solaris9  OS

Initial Comment:
Expect version 5.43 and 5.44.1
Tcl version 8.4.13

Host Type/OPerating System: 

[host05]-> uname -a
SunOS host05 5.9 Generic_118558-23 sun4u sparc SUNW,Netra-CP2300


When I use Expect, and try to execute the following syntax 
"gets stdin"
I expect that the stdin is blocking until there is input provided by the user. However, this is not the case, the behavior of stdin is non-blocking.

e.g. See the example below where *Expect is NOT being used*, stdin is blocking (as expected) in this example.

[host05]-> tclsh
% fconfigure stdin
-blocking 1 -buffering line -buffersize 4096 -encoding iso8859-1 -eofchar {} -translation auto -mode 38400,n,8,1 -xchar { }
% gets stdin
my input here
my input here
% exit
[host05]->

e.g. See the example below where Expect 5.43.0 is being invoked from the Tcl Shell.

[host05]-> tclsh
% package require Expect
5.43.0
% fconfigure stdin
-blocking 1 -buffering line -buffersize 4096 -encoding iso8859-1 -eofchar {} -translation auto -mode 38400,n,8,1 -xchar { }
% gets stdin  <====== SEE HERE,DOES NOT WAIT FOR INPUT
% exit
[host05]->

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>Comment By: SourceForge Robot (sf-robot)
Date: 2008-10-31 02:21

Message:
This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

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Comment By: Nobody/Anonymous (nobody)
Date: 2008-10-16 13:24

Message:
Deeply sorry for my previous post. Using the latest cvs (which means
upgrading from 5.43 to 5.44.1.11) the problem disapear.

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Comment By: Nobody/Anonymous (nobody)
Date: 2008-10-15 14:38

Message:
I believe my problem is the same. The most simple example I have is :
localhost:~# (echo spawn telnet) | expect
spawn telnet
localhost:~# (sleep 2; echo spawn telnet) | expect
localhost:~#

First case, the spawn is recognised.

Second case, no output from expect, he is already dead after 2 seconds.

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You can respond by visiting: 
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