Signed-off-by: onur-ozkan <[email protected]>

This feature has been enabled and tested internally in the Android
project.

This commit adds additional documentation describing the
features/extensions required by the riscv64-linux-android target.

Co-authored-by: David Tolnay <[email protected]>

Guarantee that Layout::align returns a non-zero power of two

Initiate the inner usage of `cfg_match` (Compiler)

cc rust-lang#115585

Dogfood to test the implementation and remove dependencies.

…afe, r=clubby789

add `SAFETY` block on the usage of unsafe `getuid`

We pointed out this unsafe usage in rust-lang#109859, and as a result, we received a fix PR rust-lang#116476. However, it's important to note that the `libc::getuid()` never actually fails. This PR aims to clarify its safety.

…vector, r=workingjubilee

Add the V (vector) extension to the riscv64-linux-android target spec

This feature has been enabled and tested internally in the Android project.

Remove some unnecessary `unwrap`s

…compiler-errors

explicitly handle auto trait leakage in coherence

does not impact behavior but may avoid weird bugs in the future, cc rust-lang/trait-system-refactor-initiative#65

r? `@compiler-errors`