pub enum AssertKind<O> {
BoundsCheck {
len: O,
index: O,
},
Overflow(BinOp, O, O),
OverflowNeg(O),
DivisionByZero(O),
RemainderByZero(O),
ResumedAfterReturn(CoroutineKind),
ResumedAfterPanic(CoroutineKind),
MisalignedPointerDereference {
required: O,
found: O,
},
}
Expand description
Information about an assertion failure.
Variants§
BoundsCheck
Overflow(BinOp, O, O)
OverflowNeg(O)
DivisionByZero(O)
RemainderByZero(O)
ResumedAfterReturn(CoroutineKind)
ResumedAfterPanic(CoroutineKind)
MisalignedPointerDereference
Implementations§
Source§impl<O> AssertKind<O>
impl<O> AssertKind<O>
Sourcepub fn is_optional_overflow_check(&self) -> bool
pub fn is_optional_overflow_check(&self) -> bool
Returns true if this an overflow checking assertion controlled by -C overflow-checks.
Sourcepub fn panic_function(&self) -> LangItem
pub fn panic_function(&self) -> LangItem
Get the lang item that is invoked to print a static message when this assert fires.
The caller is expected to handle BoundsCheck
and MisalignedPointerDereference
by
invoking the appropriate lang item (panic_bounds_check/panic_misaligned_pointer_dereference)
instead of printing a static message. Those have dynamic arguments that aren’t present for
the rest of the messages here.
Sourcepub fn fmt_assert_args<W: Write>(&self, f: &mut W) -> Resultwhere
O: Debug,
pub fn fmt_assert_args<W: Write>(&self, f: &mut W) -> Resultwhere
O: Debug,
Format the message arguments for the assert(cond, msg..)
terminator in MIR printing.
Needs to be kept in sync with the run-time behavior (which is defined by
AssertKind::panic_function
and the lang items mentioned in its docs).
Note that we deliberately show more details here than we do at runtime, such as the actual
numbers that overflowed – it is much easier to do so here than at runtime.
Sourcepub fn diagnostic_message(&self) -> DiagMessage
pub fn diagnostic_message(&self) -> DiagMessage
Format the diagnostic message for use in a lint (e.g. when the assertion fails during const-eval).
Needs to be kept in sync with the run-time behavior (which is defined by
AssertKind::panic_function
and the lang items mentioned in its docs).
Note that we deliberately show more details here than we do at runtime, such as the actual
numbers that overflowed – it is much easier to do so here than at runtime.
pub fn add_args(self, adder: &mut dyn FnMut(DiagArgName, DiagArgValue))where
O: Debug,
Trait Implementations§
Source§impl<O: Clone> Clone for AssertKind<O>
impl<O: Clone> Clone for AssertKind<O>
Source§fn clone(&self) -> AssertKind<O>
fn clone(&self) -> AssertKind<O>
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impl<O: PartialEq> PartialEq for AssertKind<O>
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O: TypeVisitable<TyCtxt<'tcx>>,
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impl<O> StructuralPartialEq for AssertKind<O>
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impl<O> DynSend for AssertKind<O>where
O: DynSend,
impl<O> DynSync for AssertKind<O>where
O: DynSync,
impl<O> Freeze for AssertKind<O>where
O: Freeze,
impl<O> RefUnwindSafe for AssertKind<O>where
O: RefUnwindSafe,
impl<O> Send for AssertKind<O>where
O: Send,
impl<O> Sync for AssertKind<O>where
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