Enum DirectMappingError 

pub enum DirectMappingError {
    NullInput,
    ArithmeticOverflow,
    TruncatedInput,
    TooManyAccounts {
        count: usize,
        capacity: usize,
    },
    MalformedDuplicate {
        slot: usize,
        duplicate_of: usize,
    },
    InstructionDataMismatch,
    PointerTableMisaligned,
    PointerOutOfBounds {
        slot: usize,
    },
    PointerMisaligned {
        slot: usize,
    },
    NonCanonicalPointer {
        slot: usize,
    },
}

Failure reported by the host/replay SIMD-0449 conformance decoder.

The on-chain fast path deliberately trusts the loader: the SVM constructs the pointer table and a program cannot alter it before entry. Replay tools, alternate SVMs, fuzzers, and fixture consumers do not get that trust for free, so deserialize_accounts_0449_checked validates the complete account walk and requires every table entry to equal the canonical record pointer the legacy ABI walk derives.

Variants

NullInput

The input pointer was null.

ArithmeticOverflow

Integer arithmetic over the supplied frame bounds overflowed.

TruncatedInput

The supplied byte length ends in the middle of an ABI component.

TooManyAccounts

The frame contains more accounts than the caller-provided output.

Fields

count: usize

capacity: usize

MalformedDuplicate

A duplicate marker did not refer to a strictly earlier slot.

Fields

slot: usize

duplicate_of: usize

InstructionDataMismatch

The caller’s instruction-data slice is not the exact slice in input.

PointerTableMisaligned

The computed pointer table is not aligned to an eight-byte boundary.

PointerOutOfBounds

A table entry points outside the supplied input frame.

Fields

slot: usize

PointerMisaligned

A table entry is not aligned like a canonical account record.

Fields

slot: usize

NonCanonicalPointer

A table entry is in-bounds but does not name this slot’s canonical account record (including duplicate-slot canonicalization).

Fields

slot: usize

Trait Implementations

impl Clone for DirectMappingError

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DirectMappingError

impl Debug for DirectMappingError

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

Formats the value using the given formatter.

impl Eq for DirectMappingError

impl PartialEq for DirectMappingError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DirectMappingError