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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/packed/packed-struct-borrow-element.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/packed/packed-struct-borrow-element.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/ui/packed/packed-struct-borrow-element.rs b/src/test/ui/packed/packed-struct-borrow-element.rs new file mode 100644 index 000000000..a6ee90cef --- /dev/null +++ b/src/test/ui/packed/packed-struct-borrow-element.rs @@ -0,0 +1,34 @@ +// run-pass (note: this is spec-UB, but it works for now) +#![allow(dead_code)] +// ignore-emscripten weird assertion? + +#[repr(packed)] +struct Foo1 { + bar: u8, + baz: usize +} + +#[repr(packed(2))] +struct Foo2 { + bar: u8, + baz: usize +} + +#[repr(C, packed(4))] +struct Foo4C { + bar: u8, + baz: usize +} + +#[warn(unaligned_references)] +pub fn main() { + let foo = Foo1 { bar: 1, baz: 2 }; + let brw = &foo.baz; //~WARN reference to packed field is unaligned + //~^ previously accepted + assert_eq!(*brw, 2); + + let foo = Foo2 { bar: 1, baz: 2 }; + let brw = &foo.baz; //~WARN reference to packed field is unaligned + //~^ previously accepted + assert_eq!(*brw, 2); +} |