diff options
Diffstat (limited to 'tests/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.rs')
-rw-r--r-- | tests/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.rs b/tests/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.rs new file mode 100644 index 000000000..5009dbcb9 --- /dev/null +++ b/tests/ui/consts/const-eval/promoted_const_fn_fail_deny_const_err.rs @@ -0,0 +1,22 @@ +#[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() { + // This will compile, but then hard-abort at runtime. + // FIXME(oli-obk): this should instead panic (not hard-abort) at runtime. + let x: &'static u8 = &(bar() + 1); + //~^ ERROR temporary value dropped while borrowed + let y = *x; + unreachable!(); +} |