From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui/unsafe/unsafe-assign.rs | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 src/test/ui/unsafe/unsafe-assign.rs (limited to 'src/test/ui/unsafe/unsafe-assign.rs') diff --git a/src/test/ui/unsafe/unsafe-assign.rs b/src/test/ui/unsafe/unsafe-assign.rs new file mode 100644 index 000000000..15273165b --- /dev/null +++ b/src/test/ui/unsafe/unsafe-assign.rs @@ -0,0 +1,25 @@ +// revisions: mirunsafeck thirunsafeck +// [thirunsafeck]compile-flags: -Z thir-unsafeck + +#![feature(rustc_attrs)] +#![allow(unused,dead_code)] + +fn nested_field() { + #[rustc_layout_scalar_valid_range_start(1)] + struct NonZero(T); + + let mut foo = unsafe { NonZero((1,)) }; + foo.0.0 = 0; + //~^ ERROR: mutation of layout constrained field is unsafe +} + +fn block() { + #[rustc_layout_scalar_valid_range_start(1)] + struct NonZero(T); + + let mut foo = unsafe { NonZero((1,)) }; + { foo.0 }.0 = 0; + // ^ not unsafe because the result of the block expression is a new place +} + +fn main() {} -- cgit v1.2.3