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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/suggestions/as-ref.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/suggestions/as-ref.rs')
-rw-r--r-- | tests/ui/suggestions/as-ref.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/suggestions/as-ref.rs b/tests/ui/suggestions/as-ref.rs new file mode 100644 index 000000000..a05353441 --- /dev/null +++ b/tests/ui/suggestions/as-ref.rs @@ -0,0 +1,27 @@ +struct Foo; + +fn takes_ref(_: &Foo) {} + +fn main() { + let ref opt = Some(Foo); + opt.map(|arg| takes_ref(arg)); //~ ERROR mismatched types [E0308] + opt.and_then(|arg| Some(takes_ref(arg))); //~ ERROR mismatched types [E0308] + let ref opt: Result<_, ()> = Ok(Foo); + opt.map(|arg| takes_ref(arg)); //~ ERROR mismatched types [E0308] + opt.and_then(|arg| Ok(takes_ref(arg))); //~ ERROR mismatched types [E0308] + let x: &Option<usize> = &Some(3); + let y: Option<&usize> = x; //~ ERROR mismatched types [E0308] + let x: &Result<usize, usize> = &Ok(3); + let y: Result<&usize, &usize> = x; + //~^ ERROR mismatched types [E0308] + // note: do not suggest because of `E: usize` + let x: &Result<usize, usize> = &Ok(3); + let y: Result<&usize, usize> = x; //~ ERROR mismatched types [E0308] + + let multiple_ref_opt = &&Some(Foo); + multiple_ref_opt.map(|arg| takes_ref(arg)); //~ ERROR mismatched types [E0308] + multiple_ref_opt.and_then(|arg| Some(takes_ref(arg))); //~ ERROR mismatched types [E0308] + let multiple_ref_result = &&Ok(Foo); + multiple_ref_result.map(|arg| takes_ref(arg)); //~ ERROR mismatched types [E0308] + multiple_ref_result.and_then(|arg| Ok(takes_ref(arg))); //~ ERROR mismatched types [E0308] +} |