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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/unsafe/union-modification.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/unsafe/union-modification.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/ui/unsafe/union-modification.rs b/src/test/ui/unsafe/union-modification.rs new file mode 100644 index 000000000..9a53ef908 --- /dev/null +++ b/src/test/ui/unsafe/union-modification.rs @@ -0,0 +1,37 @@ +// run-pass +// revisions: mir thir +// [thir]compile-flags: -Z thir-unsafeck + +union Foo { + bar: i8, + _blah: isize, + _zst: (), +} + +struct FooHolder { + inner_foo: Foo +} + +fn do_nothing(_x: &mut Foo) {} + +pub fn main() { + let mut foo = Foo { bar: 5 }; + do_nothing(&mut foo); + foo.bar = 6; + unsafe { foo.bar += 1; } + assert_eq!(unsafe { foo.bar }, 7); + unsafe { + let Foo { bar: inner } = foo; + assert_eq!(inner, 7); + } + + let foo = Foo { bar: 5 }; + let foo = if let 3 = if let true = true { 3 } else { 4 } { foo } else { foo }; + + let (_foo2, _random) = (foo, 42); + + let mut foo_holder = FooHolder { inner_foo: Foo { bar: 5 } }; + foo_holder.inner_foo.bar = 4; + assert_eq!(unsafe { foo_holder.inner_foo.bar }, 4); + drop(foo_holder); +} |