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Desugaring DropAndReplace at MIR build (#107844) fixed issue 70919. Add regressions tests, borrowed from #102078, to ensure we check for this in the future. Co-authored-by: Aaron Hill <aa1ronham@gmail.com>
25 lines
560 B
Rust
25 lines
560 B
Rust
// A version of `issue-70919-drop-in-loop`, but without
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// the necessary `drop` call.
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//
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// This should fail to compile, since the `Drop` impl
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// for `WrapperWithDrop` could observe the changed
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// `base` value.
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struct WrapperWithDrop<'a>(&'a mut bool);
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impl<'a> Drop for WrapperWithDrop<'a> {
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fn drop(&mut self) {
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}
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}
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fn drop_in_loop() {
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let mut base = true;
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let mut wrapper = WrapperWithDrop(&mut base);
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loop {
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base = false; //~ ERROR: cannot assign to `base`
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wrapper = WrapperWithDrop(&mut base);
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}
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}
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fn main() {
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}
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