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A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)A-layoutArea: Memory layout of typesArea: Memory layout of typesC-bugCategory: This is a bug.Category: This is a bug.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.
Description
I tried this code:
#[repr(i128)]
#[repr(u128)]
struct Foo;
fn main() {
println!("{}", std::mem::size_of::<Foo>());
}
I expected to see this happen: compilation failure
Instead, this happened: Compiles, outputs "0"
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rustc --version --verbose
:
rustc 1.44.0 (49cae5576 2020-06-01)
binary: rustc
commit-hash: 49cae55760da0a43428eba73abcb659bb70cf2e4
commit-date: 2020-06-01
host: x86_64-pc-windows-msvc
release: 1.44.0
LLVM version: 9.0
Also: playground
This issue has been assigned to @nbdd0121 via this comment.
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A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)A-layoutArea: Memory layout of typesArea: Memory layout of typesC-bugCategory: This is a bug.Category: This is a bug.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.