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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/never_type/defaulted-never-note.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/never_type/defaulted-never-note.rs')
-rw-r--r-- | src/test/ui/never_type/defaulted-never-note.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/ui/never_type/defaulted-never-note.rs b/src/test/ui/never_type/defaulted-never-note.rs new file mode 100644 index 000000000..aefc739a0 --- /dev/null +++ b/src/test/ui/never_type/defaulted-never-note.rs @@ -0,0 +1,40 @@ +// revisions: nofallback fallback +//[nofallback] run-pass +//[fallback] check-fail + +// We need to opt into the `never_type_fallback` feature +// to trigger the requirement that this is testing. +#![cfg_attr(fallback, feature(never_type, never_type_fallback))] + +#![allow(unused)] + +trait Deserialize: Sized { + fn deserialize() -> Result<Self, String>; +} + +impl Deserialize for () { + fn deserialize() -> Result<(), String> { + Ok(()) + } +} + +trait ImplementedForUnitButNotNever {} + +impl ImplementedForUnitButNotNever for () {} + +fn foo<T: ImplementedForUnitButNotNever>(_t: T) {} +//[fallback]~^ NOTE required by this bound in `foo` +//[fallback]~| NOTE required by a bound in `foo` +fn smeg() { + let _x = return; + foo(_x); + //[fallback]~^ ERROR the trait bound + //[fallback]~| NOTE the trait `ImplementedForUnitButNotNever` is not implemented + //[fallback]~| HELP trait `ImplementedForUnitButNotNever` is implemented for `()` + //[fallback]~| NOTE this error might have been caused + //[fallback]~| HELP did you intend +} + +fn main() { + smeg(); +} |