From: matz@... (Yukihiro Matsumoto)
Date: 2003-08-03T00:26:39+09:00
Subject: Re: 1.8.0-previewX  rb_sys_fail() on socket instead of an Exception.

Hello,

In message "Re: 1.8.0-previewX  rb_sys_fail() on socket instead of an Exception."
    on 03/08/02, ts <decoux@moulon.inra.fr> writes:

| No, ruby has cleared errno (see the source of server.rb). The problem is
| in ruby.

I want to fix this.  But I don't still understand the problem.

  * server.rb read the socket (by getc(3) in appendline).
  * getc returned EOF, which means end-of-file or error.
  * appendline called ferror(3) to determine if it's error, not EOF.
  * but errno is zero, so that rb_sys_fail() failed.

right?  So the question is under what situation that

  * getc(3) returns EOF
  * ferror(3) returns true
  * yet errno == 0

and what I can do for the situation like this.

							matz.