//@ 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() {}