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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/lint/unused/unused-result.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/lint/unused/unused-result.rs')
-rw-r--r-- | tests/ui/lint/unused/unused-result.rs | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/tests/ui/lint/unused/unused-result.rs b/tests/ui/lint/unused/unused-result.rs new file mode 100644 index 000000000..e283eaa88 --- /dev/null +++ b/tests/ui/lint/unused/unused-result.rs @@ -0,0 +1,42 @@ +#![allow(dead_code)] +#![deny(unused_results, unused_must_use)] +//~^ NOTE: the lint level is defined here +//~| NOTE: the lint level is defined here + +#[must_use] +enum MustUse { Test } + +#[must_use = "some message"] +enum MustUseMsg { Test2 } + +fn foo<T>() -> T { panic!() } + +fn bar() -> isize { return foo::<isize>(); } +fn baz() -> MustUse { return foo::<MustUse>(); } +fn qux() -> MustUseMsg { return foo::<MustUseMsg>(); } + +#[allow(unused_results)] +fn test() { + foo::<isize>(); + foo::<MustUse>(); //~ ERROR: unused `MustUse` that must be used + foo::<MustUseMsg>(); //~ ERROR: unused `MustUseMsg` that must be used + //~^ NOTE: some message +} + +#[allow(unused_results, unused_must_use)] +fn test2() { + foo::<isize>(); + foo::<MustUse>(); + foo::<MustUseMsg>(); +} + +fn main() { + foo::<isize>(); //~ ERROR: unused result of type `isize` + foo::<MustUse>(); //~ ERROR: unused `MustUse` that must be used + foo::<MustUseMsg>(); //~ ERROR: unused `MustUseMsg` that must be used + //~^ NOTE: some message + + let _ = foo::<isize>(); + let _ = foo::<MustUse>(); + let _ = foo::<MustUseMsg>(); +} |