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use correct svar (#7225)

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* use correct svar

Without this patch, svar location is used "nearest Ruby frame".
It is almost correct but it doesn't correct when the `each` method
is written in Ruby.

```ruby
class C
  include Enumerable
  def each
    %w(bar baz).each{|e| yield e}
  end
end

C.new.grep(/(b.)/){|e| p [$1, e]}
```

This patch fix this issue by traversing ifunc's cfp.

Note that if cfp doesn't specify this Thread's cfp stack, reserved
svar location (`ec->root_svar`) is used.

* make yjit-bindgen

---------

Co-authored-by: Takashi Kokubun <takashikkbn@gmail.com>
This commit is contained in:
Koichi Sasada 2023-02-02 09:13:19 +09:00 • committed by GitHub
parent 2675f2c864
commit 0a82bfe5e1
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Notes: git 2023-02-02 00:13:40 +00:00 
Merged-By: k0kubun <takashikkbn@gmail.com>
4 changed files with 21 additions and 8 deletions
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2
proc.c
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@ -752,7 +752,7 @@ rb_vm_ifunc_new(rb_block_call_func_t func, const void *data, int min_argc, int m
}
arity.argc.min = min_argc;
arity.argc.max = max_argc;
VALUE ret = rb_imemo_new(imemo_ifunc, (VALUE)func, (VALUE)data, arity.packed, 0);
VALUE ret = rb_imemo_new(imemo_ifunc, (VALUE)func, (VALUE)data, arity.packed, (VALUE)GET_EC()->cfp);
return (struct vm_ifunc *)ret;
}