ErrLookup › pydantic/monty

pydantic/monty

A minimal, secure Python interpreter written in Rust for use by AI · Rust · 942 source files

Analyzed at adc986b362 on 2026-09-13. 188 documented errors.

Code / Message	Type	Severity	Tags
Exceeds the limit ({INT_MAX_STR_DIGITS} digits) for integer	exception	error	python, json, valueerror, integer-limit, cpython-parity
{name} must be non-negative	validation	error	javascript, napi, argument-validation, numbers
identity enum payload fits in 14 bytes	panic	error
varargs/varkwargs own no param slot	panic	error	rust, proc-macro, codegen, internal-assert
`kwargs_not_supported_yet` cannot be combined with `kwarg_er	validation	error	rust, proc-macro, compile-time, argument-parsing, conflicting-options
ObjectList is decode-only	panic	error	rust, protobuf, wire-protocol, internal-assert
value of type ${typeof value}	exception	error	typescript, wasm, value-conversion, unsupported-type, javascript
usize fits in u128	panic	error
checked above	panic	error	rust, async, state-machine, pool, internal-assert
Monty.create could not auto-load the monty wasm module in th	exception	error	wasm, browser, wasm-worker, module-loading
StaticStrings serialization cannot fail	panic	error
checked Ready above	panic	error	state-machine, internal-panic, worker
File name too long	exception	warning	filesystem, path-length, oserror, mounts
NamedTupleBody is decode-only	panic	error	rust, protobuf, wire-protocol, internal-assert
positional-or-keyword fields cannot appear after keyword-onl	validation	error	rust, derive-macro, compile-time, argument-parsing
test namespace fits in u16	panic	error	rust, test-fixture, panic, namespace-id
already looked up	panic	critical	rust, heap, gc, cycle-collection, weakref, panic
PairList is decode-only	panic	error	rust, protobuf, wire-protocol, internal-assert
notCallableMessage(method)	exception	error	typescript, policy, host-binding
`bad_arg`/`bad_arg_named` cannot be combined with `style = d	validation	error	rust, proc-macro, fromargs, compile-time
ClassInstance attrs entries must be [name, value] pairs	validation	error	typescript, validation, class-instance, array
test function has an owned cell	panic	error	rust, test-fixture, panic, internal-invariant
fingerprint field length fits u32	panic	error
ClassInstance expects an instance of a class, not a null-pro	validation	error	typescript, constructor, prototype
test function has a free variable	panic	error	rust, panic, test-harness, fault-injection
deserialize	panic	error	rust, serde, postcard, deserialization, heap
TypeBody is decode-only	panic	error	rust, protobuf, wire-protocol, internal-assert
BytesId overflow	panic	error
ClassInstance expects an object instance	validation	error	typescript, type-safety, constructor
component value arena contains a cycle	validation	error	typescript, wasm, arena, decoding, cycle
serialize	panic	error	rust, serde, postcard, serialization, heap
positional-only fields must come before positional-or-keywor	validation	error	rust, derive-macro, compile-time, argument-parsing
classType does not match the instance's class	validation	error	typescript, type-mismatch, wrapper, configuration
could not locate the monty binary (tried: ${tried.join(', ')	exception	critical	nodejs, missing-dependency, installation
entry just allocated	panic	error	rust, panic, unit-test, heap, internal-invariant
Cannot get type of undefined value	panic	error	rust, internal-error, panic, undefined-value, type-system
LoadCell: entry is not a Cell	panic	critical	panic, internal, heap, closures, cells
LoadCell/StoreCell: expected cell reference in local slot {s	panic	critical	panic, internal, bytecode, closures
HeapReader::read_ptr - id out of bounds	panic	critical	rust, heap, use-after-free, panic, memory-safety
raw ClassInstance markers are not accepted — wrap the object	validation	error	typescript, class-instance, forged-marker, security
raw Type markers are not accepted — pass the class through C	validation	error	typescript, class-type, forged-marker, security
monty binary not found at binaryPath: ${explicit}	exception	error	nodejs, filesystem, configuration
pending_externals entry doesn't point to an ExternalFuture	panic	critical	panic, internal, async, scheduler, futures
Invalid display format: '${format}'. Expected 'type-msg' or	validation	error	typescript, error-display, invalid-argument
list_extend: expected List on heap	panic	critical	panic, internal, heap, list
HeapEntries::get - data already freed	panic	critical	rust, panic, heap, use-after-free, refcounting
the pool is closed — create a new Monty pool	exception	error	typescript, lifecycle, pool
${what} expected event ${kind}, got ${event.tag}	exception	error	protocol, versioning, wasm, wasm-worker
`at_most_total` cannot be combined with `style = def` or `st	validation	error	rust, proc-macro, fromargs, compile-time
task coroutine_id doesn't point to a Coroutine	panic	critical	async, internal-panic, scheduler
Cannot convert ${constructorName(value)} instance to a Monty	validation	error	typescript, serialization, class-instance, type-mismatch
one character	panic	info	rust, internal-invariant, hexlify
Heap::boundary_uuid: entry already freed	panic	critical	rust, heap, panic, snapshot, boundary
HeapPtr::entry: slot has been freed	panic	critical	rust, heap, use-after-free, panic, gc
Max input depth exceeded	validation	error	typescript, input-depth, recursion-limit, validation
${what} must be a canonical uuid string	validation	error	typescript, wasm, uuid, identity, value-conversion
Cannot get identity of Dereferenced object	panic	error	rust, internal-invariant, memory-model
gather commit frame id is not a GatherFuture	panic	error	rust, async, gather, internal-invariant, interpreter
cannot instantiate host class '${this.getName()}'	exception	error	permissions, policy, sandbox, configuration
ClassType expects a class (constructor function)	validation	error	typescript, type-mismatch, constructor, wrapper
index bounded by alphabet length	panic	info	rust, internal-invariant, base85
checked above	panic	error	state-machine, internal-panic, worker
MontyFileHandle position exceeds JavaScript's maximum safe i	validation	error	javascript, bigint, file-handle, value-conversion
dict_keys view must reference a dict	panic	error	rust, internal-error, panic, dict-view
resolve_child called on a gather that was never awaited	panic	critical	async, gather, internal-panic
DeleteCell: entry is not a Cell	panic	critical	panic, internal, heap, closures, del
reduced below 2**32	panic	info	rust, internal-invariant, crc32
`style = def` cannot be combined with `varargs` — a `*args`	validation	error	rust, proc-macro, fromargs, compile-time
wrapper id '${id}' already identifies a different object in	validation	error	typescript, identity, session-state, conflict
ToArgs does not yet support `varkwargs` fields	validation	error	rust, derive-macro, compile-time, feature-gap
ClassInstance attr name must be a string	validation	error	typescript, validation, class-instance, string
Monty telemetry is already configured	exception	error	typescript, telemetry, opentelemetry, double-initialization
LongIntId overflow	panic	critical	rust, panic, interning
StableHeap::get - {id:?} out of bounds	panic	critical	panic, internal, heap, use-after-free, refcount
invalid printFlushInterval: expected a non-negative number o	validation	error	config, validation, typescript, wasm-worker
cycle values are not hashable	panic	error	rust, hashing, cycle, monty-object
component value node index ${index} is out of bounds	validation	error	typescript, wasm, arena, decoding
MontyFileHandle path must be a string	validation	error	typescript, wasm, filesystem, value-conversion
pass name on the ClassType wrapper, not alongside classType	validation	error	typescript, configuration, mutually-exclusive, wrapper
`style = unpack` models a positional-only `PyArg_UnpackTuple	validation	error	rust, proc-macro, fromargs, compile-time
${field} must be 'all', undefined or a list/Set of names, go	validation	error	typescript, attribute-policy, configuration, validation
free_var '{name_str}' not found in enclosing scope's cells,	panic	error	rust, compiler, scope-analysis
ClassType attr value missing	validation	error	typescript, wasm, value-conversion, typeerror
fail_for_call: future was already resolved	panic	critical	panic, async, scheduler, double-resolution, futures
Cannot convert JS Symbol to Monty value	validation	error	types, javascript, wasm-worker, conversion
ClassInstanceBody is decode-only	panic	error	protobuf, wire-protocol, internal-panic
component core module is missing: ${path}	exception	error	wasm, wasm-bindgen, module-loading, build
{name} must be a finite number	validation	error	javascript, napi, argument-validation, numbers
`vectorcall` requires the default `clinic` style plus `at_mo	validation	error	rust, proc-macro, fromargs, compile-time
ClassInstance attr value missing	validation	error	typescript, validation, class-instance, array
resumeNotHandled is only valid for OS-call snapshots	exception	error	typescript, os-call, snapshot, api-misuse
keyword-only fields must have a `default` — the runtime bind	validation	error	rust, proc-macro, compile-time, keyword-arguments
nodeWorkerEntry must run as a worker thread	exception	error	node, worker-threads, wasm-worker, misconfiguration
unknown typeCheckFormat '${format}', expected one of: ${Obje	validation	error	typescript, options-validation, type-checking
Dump returned an unexpected event	exception	error	protocol, wasm, wasm-worker, internal
`kwargs_not_supported_yet` cannot be combined with `varkwarg	validation	error	rust, proc-macro, fromargs, compile-time
Unknown Monty marker type: ${String(object[TYPE_MARKER])}	validation	error	typescript, wasm, serialization, value-conversion
${what} produced no turn-ending event (worker crashed)	exception	error	wasm, crash, wasm-worker, worker
host_read_bytes should return bytes	panic	error	rust, internal-error, panic, filesystem, overlay
the wasm worker does not support filesystem mounts (browser	exception	error	wasm, browser, filesystem, wasm-worker