Issue #19482 has been updated by nagachika (Tomoyuki Chikanaga).
Backport changed from 2.7: DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: REQUIRED to 2.7:
DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE
ruby_3_2 141402d11c09fa641eebd8f4841f81e7bbf3518c merged revision(s)
e1bd45624c85e8a80991bda20801f50967ac77a1.
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Bug #19482: Fix crash when allocating classes with newobj hook
https://bugs.ruby-lang.org/issues/19482#change-103886
* Author: peterzhu2118 (Peter Zhu)
* Status: Closed
* Priority: Normal
* Backport: 2.7: DONTNEED, 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE
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GitHub PR:
https://github.com/ruby/ruby/pull/7464
We need to zero out the whole slot when running the newobj hook for a newly allocated
class because the slot could be filled with garbage, which would cause a crash if a GC
runs inside of the newobj hook.
For example, the following script crashes:
```ruby
require "objspace"
GC.stress = true
ObjectSpace.trace_object_allocations {
100.times do
Class.new
end
}
```
--
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