diff options
Diffstat (limited to 'src/test/ui/consts/miri_unleashed/const_refers_to_static.rs')
-rw-r--r-- | src/test/ui/consts/miri_unleashed/const_refers_to_static.rs | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/src/test/ui/consts/miri_unleashed/const_refers_to_static.rs b/src/test/ui/consts/miri_unleashed/const_refers_to_static.rs index c9dc1de51..7ed5a48d9 100644 --- a/src/test/ui/consts/miri_unleashed/const_refers_to_static.rs +++ b/src/test/ui/consts/miri_unleashed/const_refers_to_static.rs @@ -1,31 +1,33 @@ -// build-fail // compile-flags: -Zunleash-the-miri-inside-of-you -#![allow(const_err)] +// stderr-per-bitwidth use std::sync::atomic::AtomicUsize; use std::sync::atomic::Ordering; -// These fail during CTFE (as they read a static), so they only cause an error -// when *using* the const. - const MUTATE_INTERIOR_MUT: usize = { static FOO: AtomicUsize = AtomicUsize::new(0); - FOO.fetch_add(1, Ordering::Relaxed) + FOO.fetch_add(1, Ordering::Relaxed) //~ERROR evaluation of constant value failed }; const READ_INTERIOR_MUT: usize = { static FOO: AtomicUsize = AtomicUsize::new(0); - unsafe { *(&FOO as *const _ as *const usize) } + unsafe { *(&FOO as *const _ as *const usize) } //~ERROR evaluation of constant value failed }; static mut MUTABLE: u32 = 0; -const READ_MUT: u32 = unsafe { MUTABLE }; +const READ_MUT: u32 = unsafe { MUTABLE }; //~ERROR evaluation of constant value failed + +const REF_INTERIOR_MUT: &usize = { //~ ERROR undefined behavior to use this value +//~| encountered a reference pointing to a static variable + static FOO: AtomicUsize = AtomicUsize::new(0); + unsafe { &*(&FOO as *const _ as *const usize) } +}; + +// ok some day perhaps +const READ_IMMUT: &usize = { //~ ERROR it is undefined behavior to use this value +//~| encountered a reference pointing to a static variable + static FOO: usize = 0; + &FOO +}; -fn main() { - MUTATE_INTERIOR_MUT; - //~^ ERROR: erroneous constant used - READ_INTERIOR_MUT; - //~^ ERROR: erroneous constant used - READ_MUT; - //~^ ERROR: erroneous constant used -} +fn main() {} |