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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:26:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:26:03 +0000 |
commit | 9918693037dce8aa4bb6f08741b6812923486c18 (patch) | |
tree | 21d2b40bec7e6a7ea664acee056eb3d08e15a1cf /tests/ui/traits/next-solver/object-unsafety.rs | |
parent | Releasing progress-linux version 1.75.0+dfsg1-5~progress7.99u1. (diff) | |
download | rustc-9918693037dce8aa4bb6f08741b6812923486c18.tar.xz rustc-9918693037dce8aa4bb6f08741b6812923486c18.zip |
Merging upstream version 1.76.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/traits/next-solver/object-unsafety.rs')
-rw-r--r-- | tests/ui/traits/next-solver/object-unsafety.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/traits/next-solver/object-unsafety.rs b/tests/ui/traits/next-solver/object-unsafety.rs new file mode 100644 index 000000000..cfa53948b --- /dev/null +++ b/tests/ui/traits/next-solver/object-unsafety.rs @@ -0,0 +1,27 @@ +// compile-flags: -Znext-solver + +trait Setup { + type From: Copy; +} + +fn copy<U: Setup + ?Sized>(from: &U::From) -> U::From { + *from +} + +pub fn copy_any<T>(t: &T) -> T { + copy::<dyn Setup<From=T>>(t) + //~^ ERROR the type `&<dyn Setup<From = T> as Setup>::From` is not well-formed + //~| ERROR the trait bound `dyn Setup<From = T>: Setup` is not satisfied + //~| ERROR mismatched types + //~| ERROR the type `<dyn Setup<From = T> as Setup>::From` is not well-formed + //~| ERROR the size for values of type `<dyn Setup<From = T> as Setup>::From` cannot be known at compilation time + + // FIXME(-Znext-solver): These error messages are horrible and some of them + // are even simple fallout from previous error. +} + +fn main() { + let x = String::from("Hello, world"); + let y = copy_any(&x); + println!("{y}"); +} |