diff options
Diffstat (limited to '')
| -rw-r--r-- | src/test/ui/consts/const-eval/ub-wide-ptr.rs | 36 |
1 files changed, 14 insertions, 22 deletions
diff --git a/src/test/ui/consts/const-eval/ub-wide-ptr.rs b/src/test/ui/consts/const-eval/ub-wide-ptr.rs index a0377ab1e..65f6f0235 100644 --- a/src/test/ui/consts/const-eval/ub-wide-ptr.rs +++ b/src/test/ui/consts/const-eval/ub-wide-ptr.rs @@ -9,8 +9,7 @@ use std::mem; // normalize-stderr-test "size \d+" -> "size N" /// A newtype wrapper to prevent MIR generation from inserting reborrows that would affect the error -/// message. Use this whenever the message is "any use of this value will cause an error" instead of -/// "it is undefined behavior to use this value". +/// message. #[repr(transparent)] struct W<T>(T); @@ -40,12 +39,10 @@ const NESTED_STR_MUCH_TOO_LONG: (&str,) = (unsafe { mem::transmute((&42, usize:: //~^ ERROR it is undefined behavior to use this value // bad str const STR_LENGTH_PTR: &str = unsafe { mem::transmute((&42u8, &3)) }; -//~^ ERROR any use of this value will cause an error -//~| WARN this was previously accepted by the compiler but is being phased out +//~^ ERROR evaluation of constant value failed // bad str in user-defined unsized type const MY_STR_LENGTH_PTR: &MyStr = unsafe { mem::transmute((&42u8, &3)) }; -//~^ ERROR any use of this value will cause an error -//~| WARN this was previously accepted by the compiler but is being phased out +//~^ ERROR evaluation of constant value failed const MY_STR_MUCH_TOO_LONG: &MyStr = unsafe { mem::transmute((&42u8, usize::MAX)) }; //~^ ERROR it is undefined behavior to use this value @@ -61,7 +58,8 @@ const MYSTR_NO_INIT: &MyStr = unsafe { mem::transmute::<&[_], _>(&[MaybeUninit:: const SLICE_VALID: &[u8] = unsafe { mem::transmute((&42u8, 1usize)) }; // bad slice: length uninit const SLICE_LENGTH_UNINIT: &[u8] = unsafe { -//~^ ERROR it is undefined behavior to use this value +//~^ ERROR evaluation of constant value failed +//~| uninitialized let uninit_len = MaybeUninit::<usize> { uninit: () }; mem::transmute((42, uninit_len)) }; @@ -73,41 +71,37 @@ const SLICE_TOO_LONG_OVERFLOW: &[u32] = unsafe { mem::transmute((&42u32, isize:: //~^ ERROR it is undefined behavior to use this value // bad slice: length not an int const SLICE_LENGTH_PTR: &[u8] = unsafe { mem::transmute((&42u8, &3)) }; -//~^ ERROR any use of this value will cause an error -//~| WARN this was previously accepted by the compiler but is being phased out +//~^ ERROR evaluation of constant value failed // bad slice box: length too big const SLICE_TOO_LONG_BOX: Box<[u8]> = unsafe { mem::transmute((&42u8, 999usize)) }; //~^ ERROR it is undefined behavior to use this value // bad slice box: length not an int const SLICE_LENGTH_PTR_BOX: Box<[u8]> = unsafe { mem::transmute((&42u8, &3)) }; -//~^ ERROR any use of this value will cause an error -//~| WARN this was previously accepted by the compiler but is being phased out +//~^ ERROR evaluation of constant value failed // bad data *inside* the slice const SLICE_CONTENT_INVALID: &[bool] = &[unsafe { mem::transmute(3u8) }]; //~^ ERROR it is undefined behavior to use this value -//~| ERROR any use of this value will cause an error -//~| WARNING this was previously accepted +//~| ERROR evaluation of constant value failed // good MySliceBool const MYSLICE_GOOD: &MySliceBool = &MySlice(true, [false]); // bad: sized field is not okay const MYSLICE_PREFIX_BAD: &MySliceBool = &MySlice(unsafe { mem::transmute(3u8) }, [false]); //~^ ERROR it is undefined behavior to use this value -//~| ERROR any use of this value will cause an error -//~| WARNING this was previously accepted +//~| ERROR evaluation of constant value failed // bad: unsized part is not okay const MYSLICE_SUFFIX_BAD: &MySliceBool = &MySlice(true, [unsafe { mem::transmute(3u8) }]); //~^ ERROR it is undefined behavior to use this value -//~| ERROR any use of this value will cause an error -//~| WARNING this was previously accepted +//~| ERROR evaluation of constant value failed // # raw slice const RAW_SLICE_VALID: *const [u8] = unsafe { mem::transmute((&42u8, 1usize)) }; // ok const RAW_SLICE_TOO_LONG: *const [u8] = unsafe { mem::transmute((&42u8, 999usize)) }; // ok because raw const RAW_SLICE_MUCH_TOO_LONG: *const [u8] = unsafe { mem::transmute((&42u8, usize::MAX)) }; // ok because raw const RAW_SLICE_LENGTH_UNINIT: *const [u8] = unsafe { -//~^ ERROR it is undefined behavior to use this value +//~^ ERROR evaluation of constant value failed +//~| uninitialized let uninit_len = MaybeUninit::<usize> { uninit: () }; mem::transmute((42, uninit_len)) }; @@ -145,11 +139,9 @@ const TRAIT_OBJ_CONTENT_INVALID: &dyn Trait = unsafe { mem::transmute::<_, &bool // # raw trait object const RAW_TRAIT_OBJ_VTABLE_NULL: *const dyn Trait = unsafe { mem::transmute((&92u8, 0usize)) }; -//~^ ERROR evaluation of constant value failed -//~| null pointer +//~^ ERROR it is undefined behavior to use this value const RAW_TRAIT_OBJ_VTABLE_INVALID: *const dyn Trait = unsafe { mem::transmute((&92u8, &3u64)) }; -//~^ ERROR evaluation of constant value failed -//~| does not point to a vtable +//~^ ERROR it is undefined behavior to use this value const RAW_TRAIT_OBJ_CONTENT_INVALID: *const dyn Trait = unsafe { mem::transmute::<_, &bool>(&3u8) } as *const dyn Trait; // ok because raw // Const eval fails for these, so they need to be statics to error. |