From: "javanthropus (Jeremy Bopp)" <noreply@...>
Date: 2022-09-04T23:13:33+00:00
Subject: [ruby-core:109843] [Ruby master Bug#18880] IO#sysread on Windows does not validate arguments

Issue #18880 has been updated by javanthropus (Jeremy Bopp).


I'm interested in submitting a patch for this, but which behavior is considered correct?

----------------------------------------
Bug #18880: IO#sysread on Windows does not validate arguments
https://bugs.ruby-lang.org/issues/18880#change-99080

* Author: javanthropus (Jeremy Bopp)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x64-mingw-ucrt]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
When passing an invalid number of bytes to read, such as `-1` , to `IO#sysread` on Linux, an `ArgumentError` is raised.  On Windows `Errno::EINVAL` is raised instead.

``` ruby
r, w = IO.pipe
r.sysread(-1)
```

This raises `ArgumentError` on non-Windows and `Errno::EINVAL` on Windows.




-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>