Hi.
There is a bug to try to release a variable on stack area.
[repro steps]
test.vim:
----
let s:handle = ch_open('localhost:8765')
call ch_sendexpr(s:handle, 'hello!')
----
1. run server "python runtime/tools/demoserver.py"
2. vim -Nu NONE -S test.vim
3. input '["call", "function", ["tr"], -1]' to demoserver stdin.
then vim aborts.
----
Vim: Caught deadly signal ABRT
Vim: Finished.
----
[detail]
when "tv = &res_tv;",
https://github.com/vim/vim/blob/d77f9d5/src/channel.c#L2161
free_tv(tv) tries to release "res_tv", so vim aborts.
https://github.com/vim/vim/blob/d77f9d5/src/channel.c#L2177
[patch]
https://gist.github.com/ichizok/e69e1745cece199b0608523998c9a0b7
Thank you.
- Ozaki Kiichi
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