Enum rustc_middle::mir::interpret::error::InterpError

pub enum InterpError<'tcx> {
    UndefinedBehavior(UndefinedBehaviorInfo),
    Unsupported(UnsupportedOpInfo),
    InvalidProgram(InvalidProgramInfo<'tcx>),
    ResourceExhaustion(ResourceExhaustionInfo),
    MachineStop(Box<dyn MachineStopType>),
}

Variants

UndefinedBehavior(UndefinedBehaviorInfo)

The program caused undefined behavior.

Unsupported(UnsupportedOpInfo)

The program did something the interpreter does not support (some of these might be UB but the interpreter is not sure).

InvalidProgram(InvalidProgramInfo<'tcx>)

The program was invalid (ill-typed, bad MIR, not sufficiently monomorphized, …).

ResourceExhaustion(ResourceExhaustionInfo)

The program exhausted the interpreter’s resources (stack/heap too big, execution takes too long, …).

MachineStop(Box<dyn MachineStopType>)

Stop execution for a machine-controlled reason. This is never raised by the core engine itself.

Implementations

impl InterpError<'_>

pub fn formatted_string(&self) -> bool

Some errors do string formatting even if the error is never printed. To avoid performance issues, there are places where we want to be sure to never raise these formatting errors, so this method lets us detect them and bug! on unexpected errors.

Trait Implementations

impl Debug for InterpError<'_>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for InterpError<'_>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'tcx> From<InterpError<'tcx>> for InterpErrorInfo<'tcx>

fn from(kind: InterpError<'tcx>) -> Self

Converts to this type from the input type.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 64 bytes

Size for each variant:

• UndefinedBehavior: 63 bytes
• Unsupported: 39 bytes
• InvalidProgram: 63 bytes
• ResourceExhaustion: 1 byte
• MachineStop: 23 bytes