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Add a test case for #137646

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DianQK 2025-02-26 19:54:34 +08:00
parent 2b3cef882a
commit 28d3fef399
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47
tests/ui/virtual-call-attrs-issue-137646.rs Normal file
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//! Regression test for https://github.com/rust-lang/rust/issues/137646.
//! FIXME: The parameter value at all calls to `check` should be `(1, 1, 1)`.
//@ run-pass
//@ check-run-results
use std::hint::black_box;
type T = (i32, i32, i32);
pub trait Trait {
fn m(&self, _: T, _: T) {}
}
impl Trait for () {
fn m(&self, mut _v1: T, v2: T) {
_v1 = (0, 0, 0);
check(v2);
}
}
pub fn run_1(trait_: &dyn Trait) {
let v1 = (1, 1, 1);
let v2 = (1, 1, 1);
trait_.m(v1, v2);
}
pub fn run_2(trait_: &dyn Trait) {
let v1 = (1, 1, 1);
let v2 = (1, 1, 1);
trait_.m(v1, v2);
check(v1);
check(v2);
}
#[inline(never)]
fn check(v: T) {
dbg!(v);
// assert_eq!(v, (1, 1, 1));
}
fn main() {
black_box(run_1 as fn(&dyn Trait));
black_box(run_2 as fn(&dyn Trait));
run_1(&());
run_2(&());
}

20
tests/ui/virtual-call-attrs-issue-137646.run.stderr Normal file
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[$DIR/virtual-call-attrs-issue-137646.rs:38:5] v = (
498486832,
22093,
498491440,
)
[$DIR/virtual-call-attrs-issue-137646.rs:38:5] v = (
0,
0,
0,
)
[$DIR/virtual-call-attrs-issue-137646.rs:38:5] v = (
0,
0,
0,
)
[$DIR/virtual-call-attrs-issue-137646.rs:38:5] v = (
0,
0,
0,
)