blob: 60289aa7803788be6724e7d4b0fc6f7f380b5aa0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
// check-pass
#![deny(unreachable_patterns)]
#![feature(exhaustive_patterns)]
#![feature(never_type)]
#[non_exhaustive]
pub enum UninhabitedEnum {
}
#[non_exhaustive]
pub struct UninhabitedStruct {
_priv: !,
}
#[non_exhaustive]
pub struct UninhabitedTupleStruct(!);
pub enum UninhabitedVariants {
#[non_exhaustive] Tuple(!),
#[non_exhaustive] Struct { x: ! }
}
pub struct IndirectUninhabitedEnum(UninhabitedEnum);
pub struct IndirectUninhabitedStruct(UninhabitedStruct);
pub struct IndirectUninhabitedTupleStruct(UninhabitedTupleStruct);
pub struct IndirectUninhabitedVariants(UninhabitedVariants);
struct A;
// This test checks that an empty match on a non-exhaustive uninhabited type from the defining crate
// will compile. In particular, this enables the `exhaustive_patterns` feature as this can
// change the branch used in the compiler to determine this.
// Codegen is skipped because tests with long names can cause issues on Windows CI, see #60648.
fn cannot_empty_match_on_empty_enum_to_anything(x: IndirectUninhabitedEnum) -> A {
match x {}
}
fn cannot_empty_match_on_empty_struct_to_anything(x: IndirectUninhabitedStruct) -> A {
match x {}
}
fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: IndirectUninhabitedTupleStruct) -> A {
match x {}
}
fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(
x: IndirectUninhabitedVariants,
) -> A {
match x {}
}
fn main() {}
|
