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saethlinsaethlin
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Include arguments to the precondition check in failure messages
1 parent 64feb9b commit 4dc2e6c

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48 files changed

+153
-75
lines changed

‎library/core/src/alloc/layout.rs‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -130,7 +130,7 @@ impl Layout {
130130
assert_unsafe_precondition!(
131131
check_library_ub,
132132
"Layout::from_size_align_unchecked requires that align is a power of 2 \
133-
and the rounded-up allocation size does not exceed isize::MAX",
133+
and the rounded-up allocation size does not exceed isize::MAX (size:{size}, align:{align})",
134134
(
135135
size: usize = size,
136136
align: usize = align,

‎library/core/src/ascii/ascii_char.rs‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -506,7 +506,7 @@ impl AsciiChar {
506506
pub const unsafe fn digit_unchecked(d: u8) -> Self {
507507
assert_unsafe_precondition!(
508508
check_language_ub,
509-
"`ascii::Char::digit_unchecked` input cannot exceed 9.",
509+
"`ascii::Char::digit_unchecked` input cannot exceed 9. (d:{d})",
510510
(d: u8 = d) => d < 10
511511
);
512512

‎library/core/src/char/convert.rs‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -26,7 +26,7 @@ pub(super) const unsafe fn from_u32_unchecked(i: u32) -> char {
2626
unsafe {
2727
assert_unsafe_precondition!(
2828
check_language_ub,
29-
"invalid value for `char`",
29+
"invalid value for `char` ({i})",
3030
(i: u32 = i) => char_try_from_u32(i).is_ok()
3131
);
3232
transmute(i)

‎library/core/src/intrinsics/mod.rs‎

Lines changed: 6 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -4354,7 +4354,8 @@ pub const unsafe fn copy_nonoverlapping<T>(src: *const T, dst: *mut T, count: us
43544354
ub_checks::assert_unsafe_precondition!(
43554355
check_language_ub,
43564356
"ptr::copy_nonoverlapping requires that both pointer arguments are aligned and non-null \
4357-
and the specified memory ranges do not overlap",
4357+
and the specified memory ranges do not overlap \
4358+
(src:{src:?}, dst:{dst:?}, size:{size}, align:{align}, count:{count})",
43584359
(
43594360
src: *const () = src as *const (),
43604361
dst: *mut () = dst as *mut (),
@@ -4459,7 +4460,8 @@ pub const unsafe fn copy<T>(src: *const T, dst: *mut T, count: usize) {
44594460
unsafe {
44604461
ub_checks::assert_unsafe_precondition!(
44614462
check_language_ub,
4462-
"ptr::copy requires that both pointer arguments are aligned and non-null",
4463+
"ptr::copy requires that both pointer arguments are aligned and non-null \
4464+
(src:{src:?}, dst:{dst:?}, align:{align})",
44634465
(
44644466
src: *const () = src as *const (),
44654467
dst: *mut () = dst as *mut (),
@@ -4542,7 +4544,8 @@ pub const unsafe fn write_bytes<T>(dst: *mut T, val: u8, count: usize) {
45424544
unsafe {
45434545
ub_checks::assert_unsafe_precondition!(
45444546
check_language_ub,
4545-
"ptr::write_bytes requires that the destination pointer is aligned and non-null",
4547+
"ptr::write_bytes requires that the destination pointer is aligned and non-null \
4548+
(dst:{addr:?}, align:{align})",
45464549
(
45474550
addr: *const () = dst as *const (),
45484551
align: usize = align_of::<T>(),

‎library/core/src/num/int_macros.rs‎

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -514,6 +514,7 @@ macro_rules! int_impl {
514514
assert_unsafe_precondition!(
515515
check_language_ub,
516516
concat!(stringify!($SelfT), "::unchecked_add cannot overflow"),
517+
// FIXME: concat! prevents adding formatting
517518
(
518519
lhs: $SelfT = self,
519520
rhs: $SelfT = rhs,
@@ -664,6 +665,7 @@ macro_rules! int_impl {
664665
assert_unsafe_precondition!(
665666
check_language_ub,
666667
concat!(stringify!($SelfT), "::unchecked_sub cannot overflow"),
668+
// FIXME: concat! prevents adding formatting
667669
(
668670
lhs: $SelfT = self,
669671
rhs: $SelfT = rhs,
@@ -814,6 +816,7 @@ macro_rules! int_impl {
814816
assert_unsafe_precondition!(
815817
check_language_ub,
816818
concat!(stringify!($SelfT), "::unchecked_mul cannot overflow"),
819+
// FIXME: concat! prevents adding formatting
817820
(
818821
lhs: $SelfT = self,
819822
rhs: $SelfT = rhs,
@@ -1158,6 +1161,7 @@ macro_rules! int_impl {
11581161
assert_unsafe_precondition!(
11591162
check_language_ub,
11601163
concat!(stringify!($SelfT), "::unchecked_neg cannot overflow"),
1164+
// FIXME: concat! prevents adding formatting
11611165
(
11621166
lhs: $SelfT = self,
11631167
) => !lhs.overflowing_neg().1,
@@ -1286,6 +1290,7 @@ macro_rules! int_impl {
12861290
assert_unsafe_precondition!(
12871291
check_language_ub,
12881292
concat!(stringify!($SelfT), "::unchecked_shl cannot overflow"),
1293+
// FIXME: concat! prevents adding formatting
12891294
(
12901295
rhs: u32 = rhs,
12911296
) => rhs < <$ActualT>::BITS,
@@ -1407,6 +1412,7 @@ macro_rules! int_impl {
14071412
assert_unsafe_precondition!(
14081413
check_language_ub,
14091414
concat!(stringify!($SelfT), "::unchecked_shr cannot overflow"),
1415+
// FIXME: concat! prevents adding formatting
14101416
(
14111417
rhs: u32 = rhs,
14121418
) => rhs < <$ActualT>::BITS,

‎library/core/src/num/nonzero.rs‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -403,6 +403,7 @@ where
403403
ub_checks::assert_unsafe_precondition!(
404404
check_language_ub,
405405
"NonZero::new_unchecked requires the argument to be non-zero",
406+
// FIXME: Can't print n here because of how the check is written
406407
() => false,
407408
);
408409
intrinsics::unreachable()
@@ -443,6 +444,7 @@ where
443444
ub_checks::assert_unsafe_precondition!(
444445
check_library_ub,
445446
"NonZero::from_mut_unchecked requires the argument to dereference as non-zero",
447+
// FIXME: Can't print n here because of how the check is written
446448
() => false,
447449
);
448450
intrinsics::unreachable()

‎library/core/src/num/uint_macros.rs‎

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -561,6 +561,7 @@ macro_rules! uint_impl {
561561
assert_unsafe_precondition!(
562562
check_language_ub,
563563
concat!(stringify!($SelfT), "::unchecked_add cannot overflow"),
564+
// FIXME: concat! prevents adding formatting
564565
(
565566
lhs: $SelfT = self,
566567
rhs: $SelfT = rhs,
@@ -751,6 +752,7 @@ macro_rules! uint_impl {
751752
assert_unsafe_precondition!(
752753
check_language_ub,
753754
concat!(stringify!($SelfT), "::unchecked_sub cannot overflow"),
755+
// FIXME: concat! prevents adding formatting
754756
(
755757
lhs: $SelfT = self,
756758
rhs: $SelfT = rhs,
@@ -934,6 +936,7 @@ macro_rules! uint_impl {
934936
assert_unsafe_precondition!(
935937
check_language_ub,
936938
concat!(stringify!($SelfT), "::unchecked_mul cannot overflow"),
939+
// FIXME: concat! prevents adding formatting
937940
(
938941
lhs: $SelfT = self,
939942
rhs: $SelfT = rhs,
@@ -1504,6 +1507,7 @@ macro_rules! uint_impl {
15041507
assert_unsafe_precondition!(
15051508
check_language_ub,
15061509
concat!(stringify!($SelfT), "::unchecked_shl cannot overflow"),
1510+
// FIXME: concat! prevents adding formatting
15071511
(
15081512
rhs: u32 = rhs,
15091513
) => rhs < <$ActualT>::BITS,
@@ -1625,6 +1629,7 @@ macro_rules! uint_impl {
16251629
assert_unsafe_precondition!(
16261630
check_language_ub,
16271631
concat!(stringify!($SelfT), "::unchecked_shr cannot overflow"),
1632+
// FIXME: concat! prevents adding formatting
16281633
(
16291634
rhs: u32 = rhs,
16301635
) => rhs < <$ActualT>::BITS,

‎library/core/src/ops/index_range.rs‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -21,7 +21,8 @@ impl IndexRange {
2121
pub const unsafe fn new_unchecked(start: usize, end: usize) -> Self {
2222
ub_checks::assert_unsafe_precondition!(
2323
check_library_ub,
24-
"IndexRange::new_unchecked requires `start <= end`",
24+
"IndexRange::new_unchecked requires `start <= end` \
25+
(start:{start}, end:{end})",
2526
(start: usize = start, end: usize = end) => start <= end,
2627
);
2728
IndexRange { start, end }

‎library/core/src/ptr/alignment.rs‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -75,7 +75,8 @@ impl Alignment {
7575
pub const unsafe fn new_unchecked(align: usize) -> Self {
7676
assert_unsafe_precondition!(
7777
check_language_ub,
78-
"Alignment::new_unchecked requires a power of two",
78+
"Alignment::new_unchecked requires a power of two \
79+
(align:{align})",
7980
(align: usize = align) => align.is_power_of_two()
8081
);
8182

‎library/core/src/ptr/const_ptr.rs‎

Lines changed: 8 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -443,7 +443,8 @@ impl<T: ?Sized> *const T {
443443

444444
ub_checks::assert_unsafe_precondition!(
445445
check_language_ub,
446-
"ptr::offset requires the address calculation to not overflow",
446+
"ptr::offset requires the address calculation to not overflow \
447+
(ptr:{this:?}, count:{count}, size:{size})",
447448
(
448449
this: *const () = self as *const (),
449450
count: isize = count,
@@ -789,7 +790,8 @@ impl<T: ?Sized> *const T {
789790

790791
ub_checks::assert_unsafe_precondition!(
791792
check_language_ub,
792-
"ptr::sub_ptr requires `self >= origin`",
793+
"ptr::sub_ptr requires `self >= origin` \
794+
(self:{this:?}, origin:{origin:?})",
793795
(
794796
this: *const () = self as *const (),
795797
origin: *const () = origin as *const (),
@@ -955,7 +957,8 @@ impl<T: ?Sized> *const T {
955957
#[cfg(debug_assertions)] // Expensive, and doesn't catch much in the wild.
956958
ub_checks::assert_unsafe_precondition!(
957959
check_language_ub,
958-
"ptr::add requires that the address calculation does not overflow",
960+
"ptr::add requires that the address calculation does not overflow \
961+
(self:{this:?}, count:{count}, size:{size})",
959962
(
960963
this: *const () = self as *const (),
961964
count: usize = count,
@@ -1060,7 +1063,8 @@ impl<T: ?Sized> *const T {
10601063
#[cfg(debug_assertions)] // Expensive, and doesn't catch much in the wild.
10611064
ub_checks::assert_unsafe_precondition!(
10621065
check_language_ub,
1063-
"ptr::sub requires that the address calculation does not overflow",
1066+
"ptr::sub requires that the address calculation does not overflow \
1067+
(self:{this:?}, count:{count}, size:{size})",
10641068
(
10651069
this: *const () = self as *const (),
10661070
count: usize = count,

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