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authorbors <bors@rust-lang.org>2021-08-07 23:24:15 +0000
committerbors <bors@rust-lang.org>2021-08-07 23:24:15 +0000
commit798446fe0612dd83a151e99c201b87dd649d4eb3 (patch)
tree6e71618e2083ebcfaf354a90db0ba81873082df3 /compiler/rustc_query_impl/src
parent574d37568029f5c637557a87426ade54770d9a14 (diff)
parent49685377805e9c87d00aa1d8b8cece3de2dc8319 (diff)
downloadrust-798446fe0612dd83a151e99c201b87dd649d4eb3.tar.gz
rust-798446fe0612dd83a151e99c201b87dd649d4eb3.zip
Auto merge of #87772 - npmccallum:naked_abi, r=Amanieu
Move naked function ABI check to its own lint

This check was previously categorized under the lint named
`UNSUPPORTED_NAKED_FUNCTIONS`. That lint is future incompatible and will
be turned into an error in a future release. However, as defined in the
Constrained Naked Functions RFC, this check should only be a warning.
This is because it is possible for a naked function to be implemented in
such a way that it does not break even the undefined ABI. For example, a
`jmp` to a `const`.

Therefore, this patch defines a new lint named
`UNDEFINED_NAKED_FUNCTION_ABI` which contains just this single check.
Unlike `UNSUPPORTED_NAKED_FUNCTIONS`, `UNDEFINED_NAKED_FUNCTION_ABI`
will not be converted to an error in the future.

rust-lang/rfcs#2774
rust-lang/rfcs#2972
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