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regression test for reverse() unsoundness #2036

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merged 2 commits into from
Mar 24, 2022
Merged

regression test for reverse() unsoundness #2036

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694846f
vec test: check number validity
RalfJung Mar 22, 2022
951ac65
regression test for reverse() unsoundness
RalfJung Mar 22, 2022
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13 changes: 12 additions & 1 deletion tests/run-pass/vec.rs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// compile-flags: -Zmiri-tag-raw-pointers
// compile-flags: -Zmiri-tag-raw-pointers -Zmiri-check-number-validity
// Gather all references from a mutable iterator and make sure Miri notices if
// using them is dangerous.
fn test_all_refs<'a, T: 'a>(dummy: &mut T, iter: impl Iterator<Item = &'a mut T>) {
Expand Down Expand Up @@ -148,6 +148,16 @@ fn swap_remove() {
vec.swap_remove(1);
}

fn reverse() {
#[repr(align(2))]
#[derive(Debug)]
struct Foo(u8);

let mut v: Vec<_> = (0..50).map(Foo).collect();
v.reverse();
assert!(v[0].0 == 49);
}

fn main() {
assert_eq!(vec_reallocate().len(), 5);

Expand Down Expand Up @@ -176,4 +186,5 @@ fn main() {
sort();
swap();
swap_remove();
reverse();
}