From: ko1@...
Date: 2014-12-24T02:53:57+00:00
Subject: [ruby-core:67087] [ruby-trunk - Bug #10623] [Closed] rb_hash_delete() can return Qundef in 2.2-rc1

Issue #10623 has been updated by Koichi Sasada.

Status changed from Open to Closed
% Done changed from 0 to 100

Applied in changeset r48958.

----------
* hash.c (rb_hash_delete): return Qnil if there are no corresponding
  entry. [Bug #10623]
* hash.c (rb_hash_delete_entry): try delete and return Qundef if there
  are no corresponding entry.
* internal.h: add rb_hash_delete_entry()'s declaration.
* symbol.c: use rb_hash_delete_entry().
* thread.c: use rb_hash_delete_entry().
* ext/-test-/hash/delete.c: use rb_hash_delete_entry().

----------------------------------------
Bug #10623: rb_hash_delete() can return Qundef in 2.2-rc1
https://bugs.ruby-lang.org/issues/10623#change-50600

* Author: Aman Gupta
* Status: Closed
* Priority: Normal
* Assignee: 
* Category: 
* Target version: current: 2.2.0
* ruby -v: ruby 2.2.0dev [x86_64-darwin14]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
The behavior of rb_hash_delete() has changed from 2.1. Before, it would always return Qnil or VALUE. Now it can also return Qundef, which is breaking the posix-spawn gem's usage:

https://github.com/rtomayko/posix-spawn/blob/master/ext/posix-spawn.c#L242-L258

It also appears RTEST(Qundef) returns true, which causes a segfault in posix-spawn gem here:

https://github.com/rtomayko/posix-spawn/blob/master/ext/posix-spawn.c#L425

I think we should revert back to original behavior before 2.2.0 is released.



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