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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-19 09:26:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-19 09:26:03 +0000
commit9918693037dce8aa4bb6f08741b6812923486c18 (patch)
tree21d2b40bec7e6a7ea664acee056eb3d08e15a1cf /tests/ui/traits/next-solver/unsize-good.rs
parentReleasing progress-linux version 1.75.0+dfsg1-5~progress7.99u1. (diff)
downloadrustc-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/unsize-good.rs')
-rw-r--r--tests/ui/traits/next-solver/unsize-good.rs25
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/traits/next-solver/unsize-good.rs b/tests/ui/traits/next-solver/unsize-good.rs
new file mode 100644
index 000000000..04ebe66f2
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+++ b/tests/ui/traits/next-solver/unsize-good.rs
@@ -0,0 +1,25 @@
+// compile-flags: -Znext-solver
+// check-pass
+
+#![feature(unsized_tuple_coercion)]
+
+trait Foo {}
+
+impl Foo for i32 {}
+
+fn main() {
+ // Unsizing via struct
+ let _: Box<dyn Foo> = Box::new(1i32);
+
+ // Slice unsizing
+ let y = [1, 2, 3];
+ let _: &[i32] = &y;
+
+ // Tuple unsizing
+ let hi = (1i32,);
+ let _: &(dyn Foo,) = &hi;
+
+ // Dropping auto traits
+ let a: &(dyn Foo + Send) = &1;
+ let _: &dyn Foo = a;
+}