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adjust dangling-int-ptr error message
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RalfJung committed Jul 5, 2022
1 parent 4045ce6 commit 46956f7
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Showing 18 changed files with 60 additions and 47 deletions.
4 changes: 2 additions & 2 deletions compiler/rustc_const_eval/src/interpret/machine.rs
Original file line number Diff line number Diff line change
Expand Up @@ -513,7 +513,7 @@ pub macro compile_time_machine(<$mir: lifetime, $tcx: lifetime>) {
_ecx: &InterpCx<$mir, $tcx, Self>,
addr: u64,
) -> Pointer<Option<AllocId>> {
Pointer::new(None, Size::from_bytes(addr))
Pointer::from_addr(addr)
}

#[inline(always)]
Expand All @@ -523,7 +523,7 @@ pub macro compile_time_machine(<$mir: lifetime, $tcx: lifetime>) {
) -> InterpResult<$tcx, Pointer<Option<AllocId>>> {
// Allow these casts, but make the pointer not dereferenceable.
// (I.e., they behave like transmutation.)
Ok(Pointer::new(None, Size::from_bytes(addr)))
Ok(Pointer::from_addr(addr))
}

#[inline(always)]
Expand Down
2 changes: 1 addition & 1 deletion compiler/rustc_const_eval/src/interpret/place.rs
Original file line number Diff line number Diff line change
Expand Up @@ -188,7 +188,7 @@ impl<'tcx, Tag: Provenance> MPlaceTy<'tcx, Tag> {
#[inline]
pub fn dangling(layout: TyAndLayout<'tcx>) -> Self {
let align = layout.align.abi;
let ptr = Pointer::new(None, Size::from_bytes(align.bytes())); // no provenance, absolute address
let ptr = Pointer::from_addr(align.bytes()); // no provenance, absolute address
// `Poison` this to make sure that the pointer value `ptr` is never observable by the program.
MPlaceTy { mplace: MemPlace { ptr, meta: MemPlaceMeta::Poison }, layout, align }
}
Expand Down
18 changes: 8 additions & 10 deletions compiler/rustc_middle/src/mir/interpret/error.rs
Original file line number Diff line number Diff line change
Expand Up @@ -186,17 +186,17 @@ pub enum CheckInAllocMsg {

impl fmt::Display for CheckInAllocMsg {
/// When this is printed as an error the context looks like this:
/// "{msg}0x01 is not a valid pointer".
/// "{msg}{pointer} is a dangling pointer".
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"{}",
match *self {
CheckInAllocMsg::DerefTest => "dereferencing pointer failed: ",
CheckInAllocMsg::MemoryAccessTest => "memory access failed: ",
CheckInAllocMsg::PointerArithmeticTest => "pointer arithmetic failed: ",
CheckInAllocMsg::PointerArithmeticTest => "out-of-bounds pointer arithmetic: ",
CheckInAllocMsg::OffsetFromTest => "out-of-bounds offset_from: ",
CheckInAllocMsg::InboundsTest => "",
CheckInAllocMsg::InboundsTest => "out-of-bounds pointer use: ",
}
)
}
Expand Down Expand Up @@ -350,14 +350,12 @@ impl fmt::Display for UndefinedBehaviorInfo<'_> {
ptr_size = ptr_size.bytes(),
ptr_size_p = pluralize!(ptr_size.bytes()),
),
DanglingIntPointer(0, CheckInAllocMsg::InboundsTest) => {
write!(f, "null pointer is not a valid pointer for this operation")
}
DanglingIntPointer(0, msg) => {
write!(f, "{msg}null pointer is not a valid pointer")
}
DanglingIntPointer(i, msg) => {
write!(f, "{msg}{i:#x} is not a valid pointer")
write!(
f,
"{msg}{pointer} is a dangling pointer (it has no provenance)",
pointer = Pointer::<Option<AllocId>>::from_addr(*i),
)
}
AlignmentCheckFailed { required, has } => write!(
f,
Expand Down
19 changes: 17 additions & 2 deletions compiler/rustc_middle/src/mir/interpret/pointer.rs
Original file line number Diff line number Diff line change
Expand Up @@ -181,7 +181,17 @@ impl<Tag: Provenance> fmt::Debug for Pointer<Option<Tag>> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self.provenance {
Some(tag) => Provenance::fmt(&Pointer::new(tag, self.offset), f),
None => write!(f, "{:#x}", self.offset.bytes()),
None => write!(f, "{:#x}[noalloc]", self.offset.bytes()),
}
}
}

impl<Tag: Provenance> fmt::Display for Pointer<Option<Tag>> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if self.provenance.is_none() && self.offset.bytes() == 0 {
write!(f, "null pointer")
} else {
fmt::Debug::fmt(self, f)
}
}
}
Expand Down Expand Up @@ -226,9 +236,14 @@ impl<Tag> Pointer<Option<Tag>> {
}

impl<Tag> Pointer<Option<Tag>> {
#[inline(always)]
pub fn from_addr(addr: u64) -> Self {
Pointer { provenance: None, offset: Size::from_bytes(addr) }
}

#[inline(always)]
pub fn null() -> Self {
Pointer { provenance: None, offset: Size::ZERO }
Pointer::from_addr(0)
}
}

Expand Down
10 changes: 5 additions & 5 deletions src/test/ui/const-ptr/forbidden_slices.32bit.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ error[E0080]: could not evaluate static initializer
LL | &*ptr::slice_from_raw_parts(data, len)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| dereferencing pointer failed: null pointer is not a valid pointer
| dereferencing pointer failed: null pointer is a dangling pointer (it has no provenance)
| inside `std::slice::from_raw_parts::<u32>` at $SRC_DIR/core/src/slice/raw.rs:LL:COL
|
::: $DIR/forbidden_slices.rs:19:34
Expand All @@ -18,7 +18,7 @@ error[E0080]: could not evaluate static initializer
LL | &*ptr::slice_from_raw_parts(data, len)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| dereferencing pointer failed: null pointer is not a valid pointer
| dereferencing pointer failed: null pointer is a dangling pointer (it has no provenance)
| inside `std::slice::from_raw_parts::<()>` at $SRC_DIR/core/src/slice/raw.rs:LL:COL
|
::: $DIR/forbidden_slices.rs:20:33
Expand Down Expand Up @@ -104,7 +104,7 @@ error[E0080]: could not evaluate static initializer
LL | unsafe { intrinsics::ptr_offset_from_unsigned(self, origin) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| out-of-bounds offset_from: null pointer is not a valid pointer
| out-of-bounds offset_from: null pointer is a dangling pointer (it has no provenance)
| inside `ptr::const_ptr::<impl *const u32>::sub_ptr` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $SRC_DIR/core/src/slice/raw.rs:LL:COL
Expand Down Expand Up @@ -144,7 +144,7 @@ error[E0080]: could not evaluate static initializer
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: ALLOC_ID has size 4, so pointer to 8 bytes starting at offset 0 is out-of-bounds
| out-of-bounds pointer arithmetic: ALLOC_ID has size 4, so pointer to 8 bytes starting at offset 0 is out-of-bounds
| inside `ptr::const_ptr::<impl *const u32>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
...
LL | unsafe { self.offset(count as isize) }
Expand Down Expand Up @@ -205,7 +205,7 @@ error[E0080]: could not evaluate static initializer
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: ALLOC_ID has size 8, so pointer to 8 bytes starting at offset 1 is out-of-bounds
| out-of-bounds pointer arithmetic: ALLOC_ID has size 8, so pointer to 8 bytes starting at offset 1 is out-of-bounds
| inside `ptr::const_ptr::<impl *const u64>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
...
LL | unsafe { self.offset(count as isize) }
Expand Down
10 changes: 5 additions & 5 deletions src/test/ui/const-ptr/forbidden_slices.64bit.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ error[E0080]: could not evaluate static initializer
LL | &*ptr::slice_from_raw_parts(data, len)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| dereferencing pointer failed: null pointer is not a valid pointer
| dereferencing pointer failed: null pointer is a dangling pointer (it has no provenance)
| inside `std::slice::from_raw_parts::<u32>` at $SRC_DIR/core/src/slice/raw.rs:LL:COL
|
::: $DIR/forbidden_slices.rs:19:34
Expand All @@ -18,7 +18,7 @@ error[E0080]: could not evaluate static initializer
LL | &*ptr::slice_from_raw_parts(data, len)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| dereferencing pointer failed: null pointer is not a valid pointer
| dereferencing pointer failed: null pointer is a dangling pointer (it has no provenance)
| inside `std::slice::from_raw_parts::<()>` at $SRC_DIR/core/src/slice/raw.rs:LL:COL
|
::: $DIR/forbidden_slices.rs:20:33
Expand Down Expand Up @@ -104,7 +104,7 @@ error[E0080]: could not evaluate static initializer
LL | unsafe { intrinsics::ptr_offset_from_unsigned(self, origin) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| out-of-bounds offset_from: null pointer is not a valid pointer
| out-of-bounds offset_from: null pointer is a dangling pointer (it has no provenance)
| inside `ptr::const_ptr::<impl *const u32>::sub_ptr` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $SRC_DIR/core/src/slice/raw.rs:LL:COL
Expand Down Expand Up @@ -144,7 +144,7 @@ error[E0080]: could not evaluate static initializer
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: ALLOC_ID has size 4, so pointer to 8 bytes starting at offset 0 is out-of-bounds
| out-of-bounds pointer arithmetic: ALLOC_ID has size 4, so pointer to 8 bytes starting at offset 0 is out-of-bounds
| inside `ptr::const_ptr::<impl *const u32>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
...
LL | unsafe { self.offset(count as isize) }
Expand Down Expand Up @@ -205,7 +205,7 @@ error[E0080]: could not evaluate static initializer
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: ALLOC_ID has size 8, so pointer to 8 bytes starting at offset 1 is out-of-bounds
| out-of-bounds pointer arithmetic: ALLOC_ID has size 8, so pointer to 8 bytes starting at offset 1 is out-of-bounds
| inside `ptr::const_ptr::<impl *const u64>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
...
LL | unsafe { self.offset(count as isize) }
Expand Down
2 changes: 1 addition & 1 deletion src/test/ui/consts/const-deref-ptr.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@ error[E0080]: could not evaluate static initializer
--> $DIR/const-deref-ptr.rs:4:29
|
LL | static C: u64 = unsafe {*(0xdeadbeef as *const u64)};
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ dereferencing pointer failed: 0xdeadbeef is not a valid pointer
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ dereferencing pointer failed: 0xdeadbeef[noalloc] is a dangling pointer (it has no provenance)

error: aborting due to previous error

Expand Down
4 changes: 2 additions & 2 deletions src/test/ui/consts/const-eval/const_raw_ptr_ops2.rs
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,6 @@ const Z: i32 = unsafe { *(&1 as *const i32) };

// bad, will thus error in miri
const Z2: i32 = unsafe { *(42 as *const i32) }; //~ ERROR evaluation of constant value failed
//~| is not a valid pointer
//~| is a dangling pointer
const Z3: i32 = unsafe { *(44 as *const i32) }; //~ ERROR evaluation of constant value failed
//~| is not a valid pointer
//~| is a dangling pointer
4 changes: 2 additions & 2 deletions src/test/ui/consts/const-eval/const_raw_ptr_ops2.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,13 @@ error[E0080]: evaluation of constant value failed
--> $DIR/const_raw_ptr_ops2.rs:7:26
|
LL | const Z2: i32 = unsafe { *(42 as *const i32) };
| ^^^^^^^^^^^^^^^^^^^ dereferencing pointer failed: 0x2a is not a valid pointer
| ^^^^^^^^^^^^^^^^^^^ dereferencing pointer failed: 0x2a[noalloc] is a dangling pointer (it has no provenance)

error[E0080]: evaluation of constant value failed
--> $DIR/const_raw_ptr_ops2.rs:9:26
|
LL | const Z3: i32 = unsafe { *(44 as *const i32) };
| ^^^^^^^^^^^^^^^^^^^ dereferencing pointer failed: 0x2c is not a valid pointer
| ^^^^^^^^^^^^^^^^^^^ dereferencing pointer failed: 0x2c[noalloc] is a dangling pointer (it has no provenance)

error: aborting due to 2 previous errors

Expand Down
2 changes: 1 addition & 1 deletion src/test/ui/consts/const-eval/ub-wide-ptr.32bit.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -319,7 +319,7 @@ error[E0080]: could not evaluate static initializer
--> $DIR/ub-wide-ptr.rs:147:5
|
LL | mem::transmute::<_, &dyn Trait>((&92u8, 0usize))
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: null pointer is not a valid pointer
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: null pointer is a dangling pointer (it has no provenance)

error[E0080]: could not evaluate static initializer
--> $DIR/ub-wide-ptr.rs:151:5
Expand Down
2 changes: 1 addition & 1 deletion src/test/ui/consts/const-eval/ub-wide-ptr.64bit.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -319,7 +319,7 @@ error[E0080]: could not evaluate static initializer
--> $DIR/ub-wide-ptr.rs:147:5
|
LL | mem::transmute::<_, &dyn Trait>((&92u8, 0usize))
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: null pointer is not a valid pointer
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ memory access failed: null pointer is a dangling pointer (it has no provenance)

error[E0080]: could not evaluate static initializer
--> $DIR/ub-wide-ptr.rs:151:5
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ const fn helper() -> Option<&'static mut i32> { unsafe {
// Undefined behaviour (integer as pointer), who doesn't love tests like this.
// This code never gets executed, because the static checks fail before that.
Some(&mut *(42 as *mut i32)) //~ ERROR evaluation of constant value failed
//~| 0x2a is not a valid pointer
//~| 0x2a[noalloc] is a dangling pointer
} }
// The error is an evaluation error and not a validation error, so the error is reported
// directly at the site where it occurs.
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ error[E0080]: evaluation of constant value failed
LL | Some(&mut *(42 as *mut i32))
| ^^^^^^^^^^^^^^^^^^^^^^
| |
| dereferencing pointer failed: 0x2a is not a valid pointer
| dereferencing pointer failed: 0x2a[noalloc] is a dangling pointer (it has no provenance)
| inside `helper` at $DIR/mut_ref_in_final_dynamic_check.rs:13:10
...
LL | const A: Option<&mut i32> = helper();
Expand Down
4 changes: 2 additions & 2 deletions src/test/ui/consts/offset_from_ub.rs
Original file line number Diff line number Diff line change
Expand Up @@ -34,14 +34,14 @@ pub const NOT_MULTIPLE_OF_SIZE: isize = {
pub const OFFSET_FROM_NULL: isize = {
let ptr = 0 as *const u8;
unsafe { ptr_offset_from(ptr, ptr) } //~ERROR evaluation of constant value failed
//~| null pointer is not a valid pointer
//~| null pointer is a dangling pointer
};

pub const DIFFERENT_INT: isize = { // offset_from with two different integers: like DIFFERENT_ALLOC
let ptr1 = 8 as *const u8;
let ptr2 = 16 as *const u8;
unsafe { ptr_offset_from(ptr2, ptr1) } //~ERROR evaluation of constant value failed
//~| 0x8 is not a valid pointer
//~| 0x8[noalloc] is a dangling pointer
};

const OUT_OF_BOUNDS_1: isize = {
Expand Down
4 changes: 2 additions & 2 deletions src/test/ui/consts/offset_from_ub.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -28,13 +28,13 @@ error[E0080]: evaluation of constant value failed
--> $DIR/offset_from_ub.rs:36:14
|
LL | unsafe { ptr_offset_from(ptr, ptr) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^ out-of-bounds offset_from: null pointer is not a valid pointer
| ^^^^^^^^^^^^^^^^^^^^^^^^^ out-of-bounds offset_from: null pointer is a dangling pointer (it has no provenance)

error[E0080]: evaluation of constant value failed
--> $DIR/offset_from_ub.rs:43:14
|
LL | unsafe { ptr_offset_from(ptr2, ptr1) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ out-of-bounds offset_from: 0x8 is not a valid pointer
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ out-of-bounds offset_from: 0x8[noalloc] is a dangling pointer (it has no provenance)

error[E0080]: evaluation of constant value failed
--> $DIR/offset_from_ub.rs:52:14
Expand Down
14 changes: 7 additions & 7 deletions src/test/ui/consts/offset_ub.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ error[E0080]: evaluation of constant value failed
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: allocN has size 1, so pointer to 2 bytes starting at offset 0 is out-of-bounds
| out-of-bounds pointer arithmetic: allocN has size 1, so pointer to 2 bytes starting at offset 0 is out-of-bounds
| inside `ptr::const_ptr::<impl *const u8>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $DIR/offset_ub.rs:8:43
Expand All @@ -32,7 +32,7 @@ error[E0080]: evaluation of constant value failed
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: allocN has size 100, so pointer to 101 bytes starting at offset 0 is out-of-bounds
| out-of-bounds pointer arithmetic: allocN has size 100, so pointer to 101 bytes starting at offset 0 is out-of-bounds
| inside `ptr::const_ptr::<impl *const u8>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $DIR/offset_ub.rs:9:45
Expand Down Expand Up @@ -102,7 +102,7 @@ error[E0080]: evaluation of constant value failed
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: allocN has size 1, so pointer to 2 bytes starting at offset -4 is out-of-bounds
| out-of-bounds pointer arithmetic: allocN has size 1, so pointer to 2 bytes starting at offset -4 is out-of-bounds
| inside `ptr::const_ptr::<impl *const u8>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $DIR/offset_ub.rs:15:49
Expand All @@ -116,7 +116,7 @@ error[E0080]: evaluation of constant value failed
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: allocN has size 0, so pointer to 1 byte starting at offset 0 is out-of-bounds
| out-of-bounds pointer arithmetic: allocN has size 0, so pointer to 1 byte starting at offset 0 is out-of-bounds
| inside `ptr::const_ptr::<impl *const u8>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $DIR/offset_ub.rs:17:50
Expand All @@ -130,7 +130,7 @@ error[E0080]: evaluation of constant value failed
LL | unsafe { intrinsics::offset(self, count) as *mut T }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: 0x1 is not a valid pointer
| out-of-bounds pointer arithmetic: 0x1[noalloc] is a dangling pointer (it has no provenance)
| inside `ptr::mut_ptr::<impl *mut u8>::offset` at $SRC_DIR/core/src/ptr/mut_ptr.rs:LL:COL
|
::: $DIR/offset_ub.rs:18:42
Expand All @@ -144,7 +144,7 @@ error[E0080]: evaluation of constant value failed
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: null pointer is not a valid pointer
| out-of-bounds pointer arithmetic: null pointer is a dangling pointer (it has no provenance)
| inside `ptr::const_ptr::<impl *const u8>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $DIR/offset_ub.rs:21:50
Expand All @@ -158,7 +158,7 @@ error[E0080]: evaluation of constant value failed
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: 0x7f..f is not a valid pointer
| out-of-bounds pointer arithmetic: 0x7f..f[noalloc] is a dangling pointer (it has no provenance)
| inside `ptr::const_ptr::<impl *const u8>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $DIR/offset_ub.rs:24:47
Expand Down
2 changes: 1 addition & 1 deletion src/test/ui/consts/ptr_comparisons.stderr
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ error[E0080]: evaluation of constant value failed
LL | unsafe { intrinsics::offset(self, count) }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| pointer arithmetic failed: alloc3 has size $WORD, so pointer to $TWO_WORDS bytes starting at offset 0 is out-of-bounds
| out-of-bounds pointer arithmetic: alloc3 has size $WORD, so pointer to $TWO_WORDS bytes starting at offset 0 is out-of-bounds
| inside `ptr::const_ptr::<impl *const usize>::offset` at $SRC_DIR/core/src/ptr/const_ptr.rs:LL:COL
|
::: $DIR/ptr_comparisons.rs:58:34
Expand Down
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