mirror of https://github.com/rust-lang/rust
23 lines
531 B
Rust
23 lines
531 B
Rust
#[repr(C)]
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union Bar {
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a: &'static u8,
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b: usize,
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}
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const fn bar() -> u8 {
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unsafe {
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// This will error as long as this test is run on a system whose
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// pointers need more than 8 bits.
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Bar { a: &42 }.b as u8
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}
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}
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fn main() {
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// This will compile, but then hard-abort at runtime.
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// FIXME(oli-obk): this should instead panic (not hard-abort) at runtime.
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let x: &'static u8 = &(bar() + 1);
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//~^ ERROR temporary value dropped while borrowed
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let y = *x;
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unreachable!();
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}
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