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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/packed/packed-struct-borrow-element.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/packed/packed-struct-borrow-element.rs')
-rw-r--r-- | tests/ui/packed/packed-struct-borrow-element.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tests/ui/packed/packed-struct-borrow-element.rs b/tests/ui/packed/packed-struct-borrow-element.rs new file mode 100644 index 000000000..a6ee90cef --- /dev/null +++ b/tests/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); +} |