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Enforce that PointerLike requires a pointer-like ABI

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This commit is contained in:
Michael Goulet 2023-03-20 20:53:43 +00:00
parent dd2b19539e
commit 920c51c526
14 changed files with 41 additions and 25 deletions
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10
compiler/rustc_abi/src/lib.rs
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@ -1522,6 +1522,16 @@ impl<'a> Layout<'a> {
pub fn size(self) -> Size {
self.0.0.size
}
/// Whether the layout is from a type that implements [`std::marker::PointerLike`].
///
/// Currently, that means that the type is pointer-sized, pointer-aligned,
/// and has a scalar ABI.
pub fn is_pointer_like(self, data_layout: &TargetDataLayout) -> bool {
self.size() == data_layout.pointer_size
&& self.align().abi == data_layout.pointer_align.abi
&& matches!(self.abi(), Abi::Scalar(..))
}
}
#[derive(Copy, Clone, PartialEq, Eq, Debug)]