mirror of https://github.com/rust-lang/rust
24 lines
525 B
Rust
24 lines
525 B
Rust
//@ run-fail
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//@ check-run-results
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//@ exec-env:RUST_BACKTRACE=0
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//@ normalize-stderr-test: "(core/src/panicking\.rs):[0-9]+:[0-9]+" -> "$1:$$LINE:$$COL"
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//@ revisions: size align
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#![feature(extern_types)]
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use std::mem::{align_of_val, size_of_val};
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extern "C" {
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type A;
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}
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fn main() {
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let x: &A = unsafe { &*(1usize as *const A) };
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// These don't have a dynamic size, so this should panic.
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if cfg!(size) {
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assert_eq!(size_of_val(x), 0);
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} else {
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assert_eq!(align_of_val(x), 1);
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}
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}
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