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/issue-47412.rs | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 src/test/ui/unsafe/issue-47412.rs (limited to 'src/test/ui/unsafe/issue-47412.rs') diff --git a/src/test/ui/unsafe/issue-47412.rs b/src/test/ui/unsafe/issue-47412.rs new file mode 100644 index 000000000..df6d6e422 --- /dev/null +++ b/src/test/ui/unsafe/issue-47412.rs @@ -0,0 +1,24 @@ +// revisions: mir thir +// [thir]compile-flags: -Z thir-unsafeck + +#[derive(Copy, Clone)] +enum Void {} + +// Tests that we detect unsafe places (specifically, union fields and +// raw pointer dereferences), even when they're matched on while having +// an uninhabited type (equivalent to `std::intrinsics::unreachable()`). + +fn union_field() { + union Union { unit: (), void: Void } + let u = Union { unit: () }; + match u.void {} + //~^ ERROR access to union field is unsafe +} + +fn raw_ptr_deref() { + let ptr = std::ptr::null::(); + match *ptr {} + //~^ ERROR dereference of raw pointer is unsafe +} + +fn main() {} -- cgit v1.2.3