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18 lines
434 B
Rust
18 lines
434 B
Rust
// Retagging (from Stacked Borrows) relies on the array index being a fresh
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// temporary, so that side-effects cannot change it.
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// Test that this is indeed the case.
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unsafe fn foo(z: *mut usize) -> u32 {
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*z = 2;
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99
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}
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// EMIT_MIR array_index_is_temporary.main.SimplifyCfg-elaborate-drops.after.mir
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fn main() {
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let mut x = [42, 43, 44];
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let mut y = 1;
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let z: *mut usize = &mut y;
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x[y] = unsafe { foo(z) };
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}
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