-
Notifications
You must be signed in to change notification settings - Fork 32
/
match.rs
41 lines (31 loc) · 1.05 KB
/
match.rs
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
//@ aux-build:uninhabited.rs
#![feature(never_type)]
extern crate uninhabited;
use uninhabited::{
UninhabitedEnum,
UninhabitedStruct,
UninhabitedTupleStruct,
UninhabitedVariants,
};
struct A;
// This test checks that an empty match on a non-exhaustive uninhabited type from an extern crate
// will not compile.
fn cannot_empty_match_on_empty_enum_to_anything(x: UninhabitedEnum) -> A {
match x {} //~ ERROR non-exhaustive patterns
}
fn cannot_empty_match_on_empty_struct_to_anything(x: UninhabitedStruct) -> A {
match x {} //~ ERROR non-exhaustive patterns
}
fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: UninhabitedTupleStruct) -> A {
match x {} //~ ERROR non-exhaustive patterns
}
fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(x: UninhabitedVariants) -> A {
match x {} //~ ERROR non-exhaustive patterns
}
fn main() {}
// ferrocene-annotations: fls_dw33yt5g6m0k
// Type Coercion
// ferrocene-annotations: fls_98lnexk53ru4
// Never Type
// ferrocene-annotations: fls_e5td0fa92fay
// Match Expressions