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Luca Versari c8b76bcf58 Emit warning when calling/declaring functions with unavailable vectors. 
On some architectures, vector types may have a different ABI depending
on whether the relevant target features are enabled. (The ABI when the
feature is disabled is often not specified, but LLVM implements some
de-facto ABI.)

As discussed in rust-lang/lang-team#235, this turns out to very easily
lead to unsound code.

This commit makes it a post-monomorphization future-incompat warning to
declare or call functions using those vector types in a context in which
the corresponding target features are disabled, if using an ABI for
which the difference is relevant. This ensures that these functions are
always called with a consistent ABI.

See the [nomination comment](https://github.com/rust-lang/rust/pull/127731#issuecomment-2288558187)
for more discussion.

Part of #116558
2024-11-01 22:24:35 +01:00
..
src Emit warning when calling/declaring functions with unavailable vectors. 2024-11-01 22:24:35 +01:00
Cargo.toml Do not run lints that cannot emit 2024-10-19 16:19:44 +02:00
messages.ftl TL note: current means target 2024-09-20 10:02:14 -07:00
README.md

README.md

For more information about how rustc works, see the rustc dev guide.