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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/ui/dst/dst-bad-assign-3.rs | |
parent | Adding upstream version 1.67.1+dfsg1. (diff) | |
download | rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.tar.xz rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.zip |
Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/dst/dst-bad-assign-3.rs')
-rw-r--r-- | tests/ui/dst/dst-bad-assign-3.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/ui/dst/dst-bad-assign-3.rs b/tests/ui/dst/dst-bad-assign-3.rs new file mode 100644 index 000000000..d05b3937c --- /dev/null +++ b/tests/ui/dst/dst-bad-assign-3.rs @@ -0,0 +1,39 @@ +// Forbid assignment into a dynamically sized type. + +#![feature(unsized_tuple_coercion)] + +type Fat<T> = (isize, &'static str, T); + +#[derive(PartialEq,Eq)] +struct Bar; + +#[derive(PartialEq,Eq)] +struct Bar1 { + f: isize +} + +trait ToBar { + fn to_bar(&self) -> Bar; + fn to_val(&self) -> isize; +} + +impl ToBar for Bar1 { + fn to_bar(&self) -> Bar { + Bar + } + fn to_val(&self) -> isize { + self.f + } +} + +pub fn main() { + // Assignment. + let f5: &mut Fat<dyn ToBar> = &mut (5, "some str", Bar1 {f :42}); + let z: Box<dyn ToBar> = Box::new(Bar1 {f: 36}); + f5.2 = Bar1 {f: 36}; + //~^ ERROR mismatched types + //~| expected trait object `dyn ToBar`, found struct `Bar1` + //~| expected trait object `dyn ToBar` + //~| found struct `Bar1` + //~| ERROR the size for values of type +} |