[#84867] [Ruby trunk Bug#14357] thread_safe tests suite segfaults — v.ondruch@...

Issue #14357 has been reported by vo.x (Vit Ondruch).

11 messages 2018/01/15

[#84980] [Ruby trunk Feature#13618][Assigned] [PATCH] auto fiber schedule for rb_wait_for_single_fd and rb_waitpid — hsbt@...

Issue #13618 has been updated by hsbt (Hiroshi SHIBATA).

10 messages 2018/01/23
[#85012] Re: [Ruby trunk Feature#13618][Assigned] [PATCH] auto fiber schedule for rb_wait_for_single_fd and rb_waitpid — Eric Wong <normalperson@...> 2018/01/23

hsbt@ruby-lang.org wrote:

[ruby-core:84907] [Ruby trunk Bug#14369] Win32::Resolv.get_hosts_path may return nil, causing Resolv to fail

From: docwhat@...
Date: 2018-01-17 17:56:08 UTC
List: ruby-core #84907
Issue #14369 has been reported by docwhat (Christian H旦ltje).

----------------------------------------
Bug #14369: Win32::Resolv.get_hosts_path may return nil, causing Resolv to fail
https://bugs.ruby-lang.org/issues/14369

* Author: docwhat (Christian H旦ltje)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: trunk
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
----------------------------------------
[Win32::Resolv.get_hosts_path()](https://github.com/ruby/ruby/blob/e0468f5ce87ef77c1ad08bc0d107a967e4906783/ext/win32/lib/win32/resolv.rb#L14) may return `nil`.

The `Resolv` class uses that [to get the hosts filename](https://github.com/ruby/ruby/blob/e0468f5ce87ef77c1ad08bc0d107a967e4906783/lib/resolv.rb#L172) which is used as the default when [initializing `Hosts`](https://github.com/ruby/ruby/blob/e0468f5ce87ef77c1ad08bc0d107a967e4906783/lib/resolv.rb#L180-L181) as `@filename`.

However, [`File.open(@filename, 'rb')`](https://github.com/ruby/ruby/blob/e0468f5ce87ef77c1ad08bc0d107a967e4906783/lib/resolv.rb#L191) is always called, even if `@filename` is `nil`.

This causes the error: `TypeError: no implicit conversion of nil into String`



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