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/consts/const-eval/promoted_const_fn_fail.rs | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 tests/ui/consts/const-eval/promoted_const_fn_fail.rs (limited to 'tests/ui/consts/const-eval/promoted_const_fn_fail.rs') diff --git a/tests/ui/consts/const-eval/promoted_const_fn_fail.rs b/tests/ui/consts/const-eval/promoted_const_fn_fail.rs new file mode 100644 index 000000000..656dd33e1 --- /dev/null +++ b/tests/ui/consts/const-eval/promoted_const_fn_fail.rs @@ -0,0 +1,20 @@ +#[repr(C)] +union Bar { + a: &'static u8, + b: usize, +} + +const fn bar() -> u8 { + unsafe { + // this will error as long as this test + // is run on a system whose pointers need more + // than 8 bits + Bar { a: &42 }.b as u8 + } +} + +fn main() { + let x: &'static u8 = &(bar() + 1); //~ ERROR temporary value dropped while borrowed + let y = *x; + unreachable!(); +} -- cgit v1.2.3