[ruby-core:102213] [Ruby master Bug#17574] Hash#inspect segfault

Issue #17574 has been updated by byroot (Jean Boussier).


It very much look like a duplicate of https://bugs.ruby-lang.org/issues/16689

@01wsmith you should try Ruby 2.7.2, this bug as been fixed in 2.7.1.

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Bug #17574: Hash#inspect segfault
https://bugs.ruby-lang.org/issues/17574#change-90060

* Author: 01wsmith (w smith)
* Status: Feedback
* Priority: Normal
* ruby -v: ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux-gnu]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
While working in irb, I encountered an issue:

``` ruby
x = {1 => {2 => 5}, 3 => {4 => 6}}
y = x[1]
y[11] = 3
x.transform_values!(&:clone)
y[11] = nil
x
```
`x.inspect` causes irb to segfault.

I was not able to test this on ruby 3.0.0.
While experimenting with this I found that `x[1]` may change.
However, it seems to work fine in ruby itself.

irb -v: `irb 1.2.1 (2019-12-24)`



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