60 lines
1.4 KiB
Rust
60 lines
1.4 KiB
Rust
// aux-build:uninhabited.rs
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// build-pass (FIXME(62277): could be check-pass?)
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#![deny(unreachable_patterns)]
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#![feature(exhaustive_patterns)]
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extern crate uninhabited;
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use uninhabited::{
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PartiallyInhabitedVariants,
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UninhabitedEnum,
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UninhabitedStruct,
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UninhabitedTupleStruct,
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UninhabitedVariants,
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};
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fn uninhabited_enum() -> Option<UninhabitedEnum> {
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None
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}
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fn uninhabited_variant() -> Option<UninhabitedVariants> {
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None
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}
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fn partially_inhabited_variant() -> PartiallyInhabitedVariants {
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PartiallyInhabitedVariants::Tuple(3)
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}
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fn uninhabited_struct() -> Option<UninhabitedStruct> {
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None
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}
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fn uninhabited_tuple_struct() -> Option<UninhabitedTupleStruct> {
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None
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}
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// This test checks that non-exhaustive types that would normally be considered uninhabited within
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// the defining crate are not considered uninhabited from extern crates.
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fn main() {
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match uninhabited_enum() {
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Some(_x) => (), // This line would normally error.
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None => (),
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}
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match uninhabited_variant() {
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Some(_x) => (), // This line would normally error.
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None => (),
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}
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// This line would normally error.
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while let PartiallyInhabitedVariants::Struct { x, .. } = partially_inhabited_variant() {
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}
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while let Some(_x) = uninhabited_struct() { // This line would normally error.
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}
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while let Some(_x) = uninhabited_tuple_struct() { // This line would normally error.
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}
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}
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