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// unit-test: ConstProp
// compile-flags: -O
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
#![feature(rustc_attrs, stmt_expr_attributes)]
// Note: this test verifies that we, in fact, do not const prop `#[rustc_box]`
// EMIT_MIR boxes.main.ConstProp.diff
fn main() {
// CHECK-LABEL: fn main(
// CHECK: debug x => [[x:_.*]];
// CHECK: (*{{_.*}}) = const 42_i32;
// CHECK: [[tmp:_.*]] = (*{{_.*}});
// CHECK: [[x]] = Add(move [[tmp]], const 0_i32);
let x = *(#[rustc_box]
Box::new(42))
+ 0;
}
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