Remove the insta-stable cfg(wasm)
#83981
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I thought we were going to add a feature instead of removing this |
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I haven't checked in terms of this actually reverting the change, but in terms of the specific code patch here seems OK; r=me. I think we should remove this support for now, and then potentially re-add with a feature gate -- it looks like the code is minimal, and I'd rather not accidentally leave it in to hit stable :) |
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That was what I thought as well, before I realized that adding I do encourage you to continue the discussion and propose to add something like this as a separate changeset. Sorry about that. |
The addition of `cfg(wasm)` was an oversight on my end that has a number of downsides: * It was introduced as an insta-stable addition, forgoing the usual staging mechanism we use for potentially far-reaching changes; * It is a breaking change for people who are using `--cfg wasm` either directly or via cargo for other purposes; * It is not entirely clear if a bare `wasm` cfg is a right option or whether `wasm` family of targets are special enough to warrant special-casing these targets specifically. As for the last point, there appears to be a fair amount of support for reducing the boilerplate in specifying architectures from the same family, while ignoring their pointer width. The suggested way forward would be to propose such a change as a separate RFC as it is potentially a quite contentious addition.
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The addition of
cfg(wasm)was an oversight on my end that turns out to have a numberof downsides:
staging mechanism we use for potentially far-reaching changes;
--cfg wasmeitherdirectly or via cargo for other purposes;
wasmcfg is a right option orwhether
wasmfamily of targets are special enough to warrantspecial-casing these targets specifically.
As for the last point, there appears to be a fair amount of support for
reducing the boilerplate in specifying architectures from the same
family, while ignoring their pointer width. The suggested way forward
would be to propose such a change as a separate RFC as it is potentially
a quite contentious addition.
cc #83879 @devsnek