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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/suggestions/as-ref.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/suggestions/as-ref.rs')
-rw-r--r-- | src/test/ui/suggestions/as-ref.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/suggestions/as-ref.rs b/src/test/ui/suggestions/as-ref.rs new file mode 100644 index 000000000..46d946153 --- /dev/null +++ b/src/test/ui/suggestions/as-ref.rs @@ -0,0 +1,20 @@ +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] +} |