From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/packed/packed-struct-borrow-element.rs | 34 +++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 tests/ui/packed/packed-struct-borrow-element.rs (limited to 'tests/ui/packed/packed-struct-borrow-element.rs') 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); +} -- cgit v1.2.3