{.inline.} destructors don't compile under --gc:refc

[alaviss]

Example

type O = object

proc `=destroy`(o: var O) {.inline.} = discard

discard (ref O)()

Current Output

Error: the destructor that is turned into a finalizer needs to have the 'nimcall' calling convention

Additional Information

• Works on --gc:arc and its variants

$ nim -v
Nim Compiler Version 1.5.1 [Linux: amd64]
Compiled at 2021-01-15
Copyright (c) 2006-2021 by Andreas Rumpf

git hash: 7b632f9ccbd4d15fa9fe4ca45b6fea22b259c81d
active boot switches: -d:release -d:nimUseLinenoise

[disruptek]

We're trying to make it work with .inline....

[cooldome]

I believe it is the way it is. Garbage collector needs finalizer function pointer and it implies no inline.
Won't fix imo.

[disruptek]

A compilation error seems appropriate since the compiler cannot honor the programmer's stated intent.