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Difference with Fiddle::Pointer#ref and FFI backend #182
Description
Hi, with the C backend, the code below updates ptr in-place. However, with the FFI backend, ptr is unchanged (with both JRuby and TruffleRuby).
require "fiddle"
ptr = Fiddle::Pointer["hello"]
i = ptr.to_i
ptr.ref[0, Fiddle::SIZEOF_VOIDP] = Fiddle::Pointer["world"]
p ptr.to_i == i # false for C backend, true for FFI backendI'm having trouble finding the cause (to try to make the behavior consistent), so wanted to see if anyone had ideas.
Activity
[-]Difference with `Fiddle::Pointer.ref` and FFI backend[/-][+]Difference with `Fiddle::Pointer#ref` and FFI backend[/+]kou commentedon Apr 22, 2025
In general, the C backend is the referenced implementation. So we should fix the FFI backend.
ankane commentedon Apr 22, 2025
Submitted a PR in #185.
Fix `Fiddle::Pointer#ref` behavior for FFI backend (#185)