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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/typeck/typeck_type_placeholder_1.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 '')
-rw-r--r-- | src/test/ui/typeck/typeck_type_placeholder_1.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/test/ui/typeck/typeck_type_placeholder_1.rs b/src/test/ui/typeck/typeck_type_placeholder_1.rs new file mode 100644 index 000000000..ea7aa5285 --- /dev/null +++ b/src/test/ui/typeck/typeck_type_placeholder_1.rs @@ -0,0 +1,32 @@ +// run-pass + +#![allow(dead_code)] +// This test checks that the `_` type placeholder works +// correctly for enabling type inference. + + +struct TestStruct { + x: *const isize +} + +unsafe impl Sync for TestStruct {} + +static CONSTEXPR: TestStruct = TestStruct{ x: &413 }; + + +pub fn main() { + let x: Vec<_> = (0..5).collect(); + let expected: &[usize] = &[0,1,2,3,4]; + assert_eq!(x, expected); + + let x = (0..5).collect::<Vec<_>>(); + assert_eq!(x, expected); + + let y: _ = "hello"; + assert_eq!(y.len(), 5); + + let ptr: &usize = &5; + let ptr2 = ptr as *const _; + + assert_eq!(ptr as *const usize as usize, ptr2 as usize); +} |