Diagnostic Codes

Sifr diagnostic codes use SIFR-<FAMILY>-dddd, with local numbers scoped to each family. Some interop families use hyphenated names such as RUST-CONFIG. Tooling metadata defaults: tool_actions is empty, fix_all_eligible is false, and machine-applicable suggestion availability is derived from emitted suggestions rather than authored registry metadata.

Families

Family	Reserved base	Summary
`PARSE`	`SIFR-PARSE-0000`	Parsing and source syntax diagnostics.
`NAME`	`SIFR-NAME-0000`	Name binding and resolution diagnostics.
`IMPORT`	`SIFR-IMPORT-0000`	Module import and path resolution diagnostics.
`TYPE`	`SIFR-TYPE-0000`	Static type compatibility and inference diagnostics.
`META`	`SIFR-META-0000`	Deterministic package metaprogramming and const-specialization diagnostics.
`ASYNC`	`SIFR-ASYNC-0000`	Async effect, awaitability, and blocking-offload diagnostics.
`PYENV`	`SIFR-PYENV-0000`	Embedded CPython environment selection, probing, and ABI diagnostics.
`PYIMP`	`SIFR-PYIMP-0000`	Embedded Python import and module-loading diagnostics.
`PYCALL`	`SIFR-PYCALL-0000`	Embedded Python callable, attribute, item, and coroutine diagnostics.
`PYCONV`	`SIFR-PYCONV-0000`	Sifr/Python primitive and structured conversion diagnostics.
`PYRES`	`SIFR-PYRES-0000`	Embedded Python resource cleanup and leak diagnostics.
`PYASYNC`	`SIFR-PYASYNC-0000`	Embedded Python loop ownership, awaitable, cancellation, and async-cleanup diagnostics.
`PYCTX`	`SIFR-PYCTX-0000`	Embedded Python context entry, exit, suppression, and cause-mapping diagnostics.
`PYZC`	`SIFR-PYZC-0000`	Embedded Python zero-copy buffer, Arrow, DLPack, and array-interface diagnostics.
`PYCB`	`SIFR-PYCB-0000`	Python-to-Sifr callback lifetime, dispatch, and closure diagnostics.
`PYTRUST`	`SIFR-PYTRUST-0000`	Embedded Python import and native-extension trust diagnostics.
`RUST-CONFIG`	`SIFR-RUST-CONFIG-0000`	Rust interop declaration and manifest-configuration diagnostics.
`RUST-RESOLVE`	`SIFR-RUST-RESOLVE-0000`	Rust interop target and Cargo item resolution diagnostics.
`RUST-TRUST`	`SIFR-RUST-TRUST-0000`	Rust interop trust-policy diagnostics.
`RUST-TYPE`	`SIFR-RUST-TYPE-0000`	Rust bridge type-contract diagnostics.
`RUST-HANDLE`	`SIFR-RUST-HANDLE-0000`	Rust opaque-handle and resource-lifetime diagnostics.
`RUST-ASYNC`	`SIFR-RUST-ASYNC-0000`	Rust async, blocking, and runtime-affinity diagnostics.
`RUST-ZC`	`SIFR-RUST-ZC-0000`	Rust zero-copy and borrowed-view diagnostics.
`RUST-CB`	`SIFR-RUST-CB-0000`	Rust callback lifetime, threading, and backpressure diagnostics.
`RUST-PANIC`	`SIFR-RUST-PANIC-0000`	Rust panic strategy, mapping, and poisoned-handle diagnostics.
`RUST-CARGO`	`SIFR-RUST-CARGO-0000`	Rust interop Cargo metadata, lockfile, and profile diagnostics.
`DECIMAL`	`SIFR-DECIMAL-0000`	Decimal literal and fixed-point arithmetic diagnostics.
`INT`	`SIFR-INT-0000`	Exact and fixed-width integer model diagnostics.
`IO`	`SIFR-IO-0000`	File and stream text/binary boundary diagnostics.
`ENCODING`	`SIFR-ENCODING-0000`	Text encoding and error-handler diagnostics.
`CALL`	`SIFR-CALL-0000`	Function, method, constructor, and overload call diagnostics.
`OWN`	`SIFR-OWN-0000`	Ownership, borrow, move, and lifetime diagnostics.
`FLOW`	`SIFR-FLOW-0000`	Control-flow, reachability, and narrowing diagnostics.
`FMT`	`SIFR-FMT-0000`	Source formatting diagnostics.
`LINT`	`SIFR-LINT-0000`	Suppressible policy-rule diagnostics.
`MATCH`	`SIFR-MATCH-0000`	Pattern matching and exhaustiveness diagnostics.
`PROTO`	`SIFR-PROTO-0000`	Protocol and structural conformance diagnostics.
`CLASS`	`SIFR-CLASS-0000`	Class declaration, constructor, field, and method diagnostics.
`RESULT`	`SIFR-RESULT-0000`	Result, Option, and checked error-flow diagnostics.
`STDLIB`	`SIFR-STDLIB-0000`	Standard-library surface and intrinsic rule diagnostics.
`WORKSPACE`	`SIFR-WORKSPACE-0000`	Workspace, package, manifest, and project discovery diagnostics.
`PACKAGE`	`SIFR-PACKAGE-0000`	Cargo-backed Sifr package coordination diagnostics.
`CODEGEN`	`SIFR-CODEGEN-0000`	Rust lowering and backend code-generation diagnostics.
`BUILD`	`SIFR-BUILD-0000`	Build orchestration, rustc, linker, and artifact diagnostics.
`INTERNAL`	`SIFR-INTERNAL-0000`	Compiler invariant and internal failure diagnostics.

Active Codes

Code	Severity	Summary
`SIFR-PARSE-0002`	Error	Expected token or generic parser recovery failure.
`SIFR-PARSE-0003`	Error	Lexical or interpolated string parser failure.
`SIFR-PARSE-0004`	Error	Indentation or same-line statement layout parser failure.
`SIFR-PARSE-0005`	Error	Invalid assignment, delete, starred, or named-expression target syntax.
`SIFR-PARSE-0006`	Error	Invalid call argument order or unpacking syntax.
`SIFR-PARSE-0007`	Error	Empty or malformed declaration list syntax.
`SIFR-PARSE-0008`	Error	Invalid match-pattern syntax.
`SIFR-PARSE-0009`	Error	Unsupported parser syntax or interactive-only syntax.
`SIFR-NAME-0001`	Error	Undefined variable.
`SIFR-NAME-0002`	Error	Undefined function or callable.
`SIFR-NAME-0003`	Error	Unknown type or generic type name.
`SIFR-NAME-0004`	Error	Missing module or class member.
`SIFR-NAME-0005`	Error	Duplicate function definition in a module.
`SIFR-NAME-0006`	Error	Variable declaration lacks a required initializer.
`SIFR-IMPORT-0001`	Error	Forbidden private sysroot declaration import.
`SIFR-IMPORT-0002`	Error	Unknown source module import target.
`SIFR-IMPORT-0003`	Error	Unsupported import statement form.
`SIFR-IMPORT-0004`	Error	Private module member import.
`SIFR-IMPORT-0005`	Error	Ambiguous source module import target.
`SIFR-IMPORT-0006`	Error	Source module namespace and file import collision.
`SIFR-IMPORT-0007`	Error	Circular source module import graph.
`SIFR-IMPORT-0008`	Error	Bare CPython-style stdlib import attempt.
`SIFR-IMPORT-0009`	Error	Unsupported legacy Sifr stdlib module import.
`SIFR-TYPE-0002`	Error	Expected and actual types are incompatible.
`SIFR-TYPE-0003`	Error	If-expression or conditional branches have incompatible types.
`SIFR-TYPE-0004`	Error	A required type annotation is missing.
`SIFR-TYPE-0005`	Error	Unsupported operator or operand types.
`SIFR-TYPE-0006`	Error	Int and bigint are mixed without an explicit conversion.
`SIFR-TYPE-0007`	Error	Invalid type annotation shape.
`SIFR-TYPE-0008`	Error	Container literal elements, keys, or values have conflicting types.
`SIFR-TYPE-0009`	Error	Tuple or list unpacking shape mismatch.
`SIFR-TYPE-0010`	Error	TypeVar constraints are not satisfied by the inferred concrete type.
`SIFR-TYPE-0011`	Error	Unsupported default argument expression.
`SIFR-TYPE-0012`	Error	Unsupported expression form.
`SIFR-TYPE-0901`	Warning	Integer arithmetic may overflow at runtime.
`SIFR-TYPE-0902`	Note	Reveal the inferred static type of an expression.
`SIFR-ASYNC-0001`	Error	Async function body has no real suspension effect.
`SIFR-ASYNC-0002`	Error	Awaited same-task coroutine has no real suspension effect.
`SIFR-ASYNC-0003`	Error	Blocking I/O function called directly from async context.
`SIFR-ASYNC-0004`	Error	CPU-heavy function called directly from async context.
`SIFR-ASYNC-0005`	Error	Blocking offload target is not classified as blocking I/O or CPU-heavy work.
`SIFR-ASYNC-0006`	Error	Synchronous workload annotation applied to async function.
`SIFR-ASYNC-0007`	Error	Shell execution function called directly from async context.
`SIFR-DECIMAL-0001`	Error	Invalid Decimal exact literal.
`SIFR-DECIMAL-0002`	Error	Invalid BigDecimal exact literal.
`SIFR-DECIMAL-0003`	Error	Float mixed with a decimal numeric type.
`SIFR-DECIMAL-0004`	Error	Decimal and BigDecimal mixed in one operation.
`SIFR-DECIMAL-0005`	Error	Decimal float construction or conversion is forbidden.
`SIFR-DECIMAL-0006`	Error	BigDecimal float construction or conversion is forbidden.
`SIFR-DECIMAL-0007`	Error	Decimal scale argument is invalid.
`SIFR-DECIMAL-0008`	Error	BigDecimal scale or context argument is invalid.
`SIFR-INT-0001`	Error	Fixed-width integer literal or const expression is out of range.
`SIFR-INT-0003`	Error	Reserved integer width name used before support lands.
`SIFR-INT-0004`	Error	Compile-time integer evaluation budget exceeded.
`SIFR-INT-0005`	Error	Integer division, modulo, or exponentiation requires handling a typed failure.
`SIFR-INT-0006`	Error	Exact integer to float conversion requires handling precision loss.
`SIFR-INT-0007`	Error	Bool and integer comparison requires explicit conversion.
`SIFR-INT-0009`	Error	JSON or web-safe integer serialization boundary is missing or unsafe.
`SIFR-INT-0011`	Warning	Temporary bigint transition alias used.
`SIFR-META-0001`	Error	Package const specialization reported a fatal issue.
`SIFR-META-0002`	Warning	Package const specialization reported a hard warning.
`SIFR-META-0003`	Error	Package const-specialization issue declaration is malformed.
`SIFR-CALL-0001`	Error	Wrong positional argument count.
`SIFR-CALL-0002`	Error	Unexpected keyword argument.
`SIFR-CALL-0003`	Error	Duplicate argument from positional and keyword overlap.
`SIFR-CALL-0004`	Error	Missing required argument.
`SIFR-CALL-0005`	Error	Callable arity failure or expression is not callable.
`SIFR-OWN-0001`	Error	Use after move.
`SIFR-OWN-0002`	Error	Conflicting borrow.
`SIFR-OWN-0003`	Error	Borrowed parameter escapes by return or store.
`SIFR-OWN-0004`	Error	Moved value is reused across loop iterations.
`SIFR-OWN-0005`	Error	Immutable parameter is mutated.
`SIFR-OWN-0006`	Error	Immutable parameter is reassigned.
`SIFR-OWN-0007`	Error	Immutable bytes value is mutated.
`SIFR-OWN-0008`	Error	Immutable bytes value is mutated by augmented assignment.
`SIFR-OWN-0009`	Error	Mutable borrow remains live across an await point.
`SIFR-OWN-0010`	Error	Non-sendable value crosses a spawned task boundary.
`SIFR-OWN-0011`	Error	Non-sendable value is sent through a channel.
`SIFR-OWN-0012`	Error	Non-share-safe value is wrapped in sync.Shared.
`SIFR-OWN-0013`	Error	Non-IPC-serializable value is used as a typed IPC payload.
`SIFR-OWN-0014`	Error	Unsupported mutable receiver place.
`SIFR-FLOW-0001`	Error	Break outside a loop.
`SIFR-FLOW-0002`	Error	Continue outside a loop.
`SIFR-FLOW-0003`	Error	Invalid nonlocal or nested-function flow.
`SIFR-FLOW-0004`	Error	Function may finish without returning a required value.
`SIFR-FLOW-0005`	Error	Control-flow condition has an unsupported type.
`SIFR-FLOW-0006`	Error	Statement form is unsupported by HIR lowering.
`SIFR-FLOW-0007`	Error	Assignment target form is unsupported by HIR lowering.
`SIFR-FLOW-0008`	Error	For-loop iteration form or source is invalid.
`SIFR-FLOW-0901`	Warning	Unreachable statement ignored during lowering.
`SIFR-MATCH-0001`	Error	Non-exhaustive match.
`SIFR-MATCH-0002`	Error	Match guard must be bool.
`SIFR-MATCH-0003`	Error	Invalid class pattern field.
`SIFR-MATCH-0004`	Error	Invalid or unsupported match pattern form.
`SIFR-PROTO-0001`	Error	Protocol bound or conformance failure.
`SIFR-PROTO-0002`	Error	Invalid iterator or reversible protocol signature.
`SIFR-PROTO-0003`	Error	Context-manager protocol is missing.
`SIFR-PROTO-0004`	Error	Hashable or comparable protocol is required.
`SIFR-PROTO-0005`	Error	Protocol receiver convention mismatch.
`SIFR-PROTO-0006`	Error	Fixed Rust trait receiver mutation is unsupported.
`SIFR-CLASS-0001`	Error	Class fields require an initializer or super initializer.
`SIFR-CLASS-0002`	Error	Required field declared after a defaulted field.
`SIFR-CLASS-0003`	Error	Duplicate enum or class value, or invalid variant.
`SIFR-CLASS-0004`	Error	Missing class field.
`SIFR-CLASS-0005`	Error	Invalid class base.
`SIFR-CLASS-0006`	Error	Unsupported class declaration.
`SIFR-RESULT-0001`	Error	Unused Result value.
`SIFR-RESULT-0002`	Error	Invalid Result error type.
`SIFR-RESULT-0003`	Error	Invalid raise expression.
`SIFR-RESULT-0004`	Error	Except arm references an unknown error type.
`SIFR-RESULT-0005`	Error	Try body error types are not fully covered by except arms.
`SIFR-RESULT-0006`	Error	Except arm type expression has an unsupported form.
`SIFR-STDLIB-0001`	Error	Unsupported standard-library constructor, method, or surface.
`SIFR-STDLIB-0003`	Error	Embedded standard-library bootstrap failure.
`SIFR-STDLIB-0004`	Error	Standard-library cache build or reuse failure.
`SIFR-IO-0801`	Error	Text-mode open requires an explicit encoding.
`SIFR-IO-0802`	Error	Open mode must be statically known.
`SIFR-ENCODING-0803`	Error	Encoding error handler must be statically known.
`SIFR-WORKSPACE-0001`	Error	Malformed workspace manifest.
`SIFR-WORKSPACE-0002`	Error	Workspace source root escapes the workspace root.
`SIFR-WORKSPACE-0003`	Error	Workspace source root is not a directory.
`SIFR-WORKSPACE-0004`	Error	Workspace source root entry has an invalid shape or path.
`SIFR-WORKSPACE-0101`	Error	Legacy workspace import target could not be resolved; source imports use `SIFR-IMPORT-0002`.
`SIFR-WORKSPACE-0102`	Error	Legacy workspace import target is ambiguous; source imports use `SIFR-IMPORT-0005`.
`SIFR-WORKSPACE-0103`	Error	Legacy workspace namespace package collision; source imports use `SIFR-IMPORT-0006`.
`SIFR-WORKSPACE-0104`	Error	Legacy workspace import graph cycle; source imports use `SIFR-IMPORT-0007`.
`SIFR-BUILD-0002`	Error	Build file materialization failed.
`SIFR-BUILD-0003`	Error	Temporary build workspace creation failed.
`SIFR-BUILD-0004`	Error	Cargo manifest generation failed.
`SIFR-BUILD-0005`	Error	Rustc or Cargo execution failed.
`SIFR-BUILD-0006`	Error	Expected build artifact was not produced.
`SIFR-BUILD-0901`	Error	Standalone install receipt is missing or outside the self-update install rules.
`SIFR-INTERNAL-0001`	Error	Unclassified compiler panic after a panic boundary.
`SIFR-INTERNAL-0002`	Note	Structured recovery-cap omission summary.
`SIFR-FMT-0001`	Error	Source formatting drift detected by sifr fmt —check.
`SIFR-LINT-0001`	Warning	Suppression references an unknown policy rule id.
`SIFR-LINT-0002`	Warning	Suppression did not suppress any diagnostic.
`SIFR-LINT-0003`	Warning	Suppression must list explicit Sifr policy rule ids.
`SIFR-LINT-0004`	Warning	Line ends with trailing horizontal whitespace.
`SIFR-LINT-0005`	Warning	Comment contains a tracked TODO or FIXME marker.
`SIFR-LINT-0006`	Warning	Call passes a boolean literal positionally.
`SIFR-LINT-0007`	Warning	Function has more parameters than the policy limit.
`SIFR-LINT-0008`	Warning	Import duplicates a module/name pair already imported in the same source file.
`SIFR-PACKAGE-0001`	Error	Missing or invalid Cargo Sifr discovery metadata.
`SIFR-PACKAGE-0002`	Error	Missing or invalid sifr.toml package manifest.
`SIFR-PACKAGE-0003`	Error	Unsupported Sifr compiler metadata appears in Cargo metadata.
`SIFR-PACKAGE-0103`	Error	Cargo metadata parsing or normalization failed.
`SIFR-PACKAGE-0101`	Error	Cargo command invocation failed; Sifr reports the redacted Cargo excerpt and safe Sifr-owned recovery context.
`SIFR-PACKAGE-0102`	Error	A selected Cargo package is Rust-only.
`SIFR-PACKAGE-0104`	Error	Package source is unavailable in offline or frozen mode.
`SIFR-PACKAGE-0106`	Error	Rust-only package depends directly on a Sifr source package.
`SIFR-PACKAGE-0201`	Error	Direct package import root resolves to multiple package instances.
`SIFR-PACKAGE-0202`	Error	Package imports a module outside its direct dependency scope.
`SIFR-PACKAGE-0203`	Error	Package imports a private module from another package.
`SIFR-PACKAGE-0204`	Error	Type identity crosses resolved package instances.
`SIFR-PACKAGE-0301`	Error	Backend Rust crate is not allowed by the Sifr trust policy.
`SIFR-PACKAGE-0305`	Error	Trust policy names a backend crate that is not a direct dependency.
`SIFR-PACKAGE-0401`	Error	Cargo package archive is missing required Sifr source.
`SIFR-PACKAGE-0402`	Error	Package publish or archive validation failed.
`SIFR-PACKAGE-0403`	Error	Cargo include/exclude rules omit required Sifr files.
`SIFR-PACKAGE-0404`	Error	Cargo package archive contains an unsafe path.
`SIFR-PACKAGE-0501`	Error	Pure Sifr Rust marker contains implementation.
`SIFR-PACKAGE-0601`	Error	Package selector is ambiguous or invalid.
`SIFR-PACKAGE-0602`	Error	Workspace selection contains duplicate import roots.
`SIFR-PACKAGE-0603`	Error	Changed file could not be mapped to a package.
`SIFR-PACKAGE-0604`	Error	Outdated query cannot inspect this Cargo source.
`SIFR-PACKAGE-0605`	Error	Runnable package target or script selection is missing or ambiguous.
`SIFR-PACKAGE-0606`	Error	Discovered app target name is invalid.
`SIFR-PACKAGE-0607`	Error	Selected workspace members use the same Sifr package name.
`SIFR-PACKAGE-0701`	Error	Production sifr.toml uses manifest-level exports.
`SIFR-PACKAGE-0703`	Error	Sifr-managed Cargo projection manifest pointer drift.
`SIFR-PACKAGE-0704`	Error	Sifr-managed Cargo projection include rules omit required package files.
`SIFR-PACKAGE-0709`	Error	Pure package marker is missing from Sifr-managed projection.
`SIFR-PACKAGE-0710`	Error	Explicit Sifr file target is outside the package source root.
`SIFR-PACKAGE-0711`	Error	Production sifr.toml uses manifest binary target tables.
`SIFR-PACKAGE-0713`	Error	Public API symbol is exported more than once.
`SIFR-PACKAGE-0714`	Error	Package script expansion attempted to invoke another script.
`SIFR-PYENV-0001`	Error	Python environment configuration is malformed.
`SIFR-PYENV-0002`	Error	Package graph selects more than one Python virtual environment.
`SIFR-PYENV-0003`	Error	A package graph requires Python but no root environment is selected.
`SIFR-PYENV-0004`	Error	Selected Python interpreter probe failed or returned invalid JSON.
`SIFR-PYENV-0005`	Error	Selected Python interpreter is not supported CPython.
`SIFR-PYENV-0006`	Error	Selected interpreter does not belong to the configured virtual environment.
`SIFR-PYENV-0007`	Error	Selected Python environment has no site-packages path.
`SIFR-PYENV-0008`	Error	Declared Python import root is missing from the selected environment.
`SIFR-PYENV-0009`	Error	Trusted native Python import root failed to load.
`SIFR-PYENV-0010`	Error	Free-threaded CPython is not supported for embedded interop.
`SIFR-PYENV-0011`	Error	Configured Python project or lockfile is missing or stale.
`SIFR-PYTRUST-0001`	Error	Dependency package declares a wildcard Python trust root.
`SIFR-PYTRUST-0003`	Error	Native Python import root is trusted but not required.
`SIFR-PYTRUST-0004`	Error	Dynamic Python import requires an explicit trust annotation.
`SIFR-PYTRUST-0005`	Error	Required Python import root is not authorized by the root application.
`SIFR-PYIMP-0001`	Error	A declaration-first Python target path is invalid or unresolved.
`SIFR-PYIMP-0002`	Error	A package-local Python bridge source or import inventory is invalid.
`SIFR-PYIMP-0003`	Error	The reserved embedded Python bridge namespace was already populated.
`SIFR-PYCALL-0001`	Error	A Python declaration or call shape is unsupported or incompatible.
`SIFR-PYCONV-0001`	Error	A Sifr type has no active declaration-first Python conversion.
`SIFR-PYRES-0002`	Error	A Python resource declaration uses an unsupported ownership or target shape.
`SIFR-PYCTX-0001`	Error	A Python context-manager entry, exit, or entered-value declaration is invalid.
`SIFR-PYCB-0001`	Error	A Python callback lifetime, dispatch, concurrency, or owner declaration is invalid.
`SIFR-PYZC-0001`	Error	An advanced-data ownership, buffer layout, or hidden-copy declaration is invalid.
`SIFR-RUST-CONFIG-0001`	Error	Rust interop decorator syntax is malformed.
`SIFR-RUST-RESOLVE-0001`	Error	Rust interop target root cannot be resolved.
`SIFR-RUST-TRUST-0001`	Error	Rust interop trust declaration is missing.
`SIFR-RUST-TYPE-0001`	Error	Rust bridge probe failed type-contract validation.
`SIFR-RUST-HANDLE-0001`	Error	Rust opaque handle contract is invalid.
`SIFR-RUST-ASYNC-0001`	Error	Rust async interop contract is invalid.
`SIFR-RUST-ZC-0001`	Error	Rust zero-copy or borrowed-view contract is invalid.
`SIFR-RUST-CB-0001`	Error	Rust callback lifetime, threading, or policy contract is invalid.
`SIFR-RUST-PANIC-0001`	Error	Rust panic boundary contract is invalid.
`SIFR-RUST-CARGO-0001`	Error	Rust interop Cargo metadata is unavailable or inconsistent.

Reserved Codes

Code	Family	Summary
`SIFR-PARSE-0000`	`PARSE`	Reserved family base; not emitted as a diagnostic.
`SIFR-NAME-0000`	`NAME`	Reserved family base; not emitted as a diagnostic.
`SIFR-IMPORT-0000`	`IMPORT`	Reserved family base; not emitted as a diagnostic.
`SIFR-TYPE-0000`	`TYPE`	Reserved family base; not emitted as a diagnostic.
`SIFR-META-0000`	`META`	Reserved family base; not emitted as a diagnostic.
`SIFR-ASYNC-0000`	`ASYNC`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYENV-0000`	`PYENV`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYIMP-0000`	`PYIMP`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYCALL-0000`	`PYCALL`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYCONV-0000`	`PYCONV`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYRES-0000`	`PYRES`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYASYNC-0000`	`PYASYNC`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYCTX-0000`	`PYCTX`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYZC-0000`	`PYZC`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYCB-0000`	`PYCB`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYTRUST-0000`	`PYTRUST`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYTRUST-0002`	`PYTRUST`	Retired: import requirements and root authorization now use `SIFR-PYTRUST-0005`.
`SIFR-RUST-CONFIG-0000`	`RUST-CONFIG`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-RESOLVE-0000`	`RUST-RESOLVE`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-TRUST-0000`	`RUST-TRUST`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-TYPE-0000`	`RUST-TYPE`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-HANDLE-0000`	`RUST-HANDLE`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-ASYNC-0000`	`RUST-ASYNC`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-ZC-0000`	`RUST-ZC`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-CB-0000`	`RUST-CB`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-PANIC-0000`	`RUST-PANIC`	Reserved family base; not emitted as a diagnostic.
`SIFR-RUST-CARGO-0000`	`RUST-CARGO`	Reserved family base; not emitted as a diagnostic.
`SIFR-DECIMAL-0000`	`DECIMAL`	Reserved family base; not emitted as a diagnostic.
`SIFR-INT-0000`	`INT`	Reserved family base; not emitted as a diagnostic.
`SIFR-IO-0000`	`IO`	Reserved family base; not emitted as a diagnostic.
`SIFR-ENCODING-0000`	`ENCODING`	Reserved family base; not emitted as a diagnostic.
`SIFR-PYRES-0001`	`PYRES`	Reserved for an invalid Python opaque cleanup or ownership policy.
`SIFR-PYASYNC-0001`	`PYASYNC`	Reserved for an invalid Python awaitable, cancellation, or loop-ownership declaration.
`SIFR-INT-0002`	`INT`	Reserved for implicit narrowing from exact or fixed-width integer sources to narrower fixed-width targets.
`SIFR-INT-0008`	`INT`	Reserved for fixed-width array, tensor, or dataframe arithmetic without an explicit overflow policy.
`SIFR-INT-0010`	`INT`	Reserved for bytes or bytearray construction and mutation values that do not fit uint8.
`SIFR-TYPE-0903`	`TYPE`	Retired: direct annotated workload calls from async code are now ASYNC-family errors.
`SIFR-CALL-0000`	`CALL`	Reserved family base; not emitted as a diagnostic.
`SIFR-OWN-0000`	`OWN`	Reserved family base; not emitted as a diagnostic.
`SIFR-FLOW-0000`	`FLOW`	Reserved family base; not emitted as a diagnostic.
`SIFR-FMT-0000`	`FMT`	Reserved family base; not emitted as a diagnostic.
`SIFR-LINT-0000`	`LINT`	Reserved family base; not emitted as a diagnostic.
`SIFR-MATCH-0000`	`MATCH`	Reserved family base; not emitted as a diagnostic.
`SIFR-PROTO-0000`	`PROTO`	Reserved family base; not emitted as a diagnostic.
`SIFR-CLASS-0000`	`CLASS`	Reserved family base; not emitted as a diagnostic.
`SIFR-RESULT-0000`	`RESULT`	Reserved family base; not emitted as a diagnostic.
`SIFR-STDLIB-0000`	`STDLIB`	Reserved family base; not emitted as a diagnostic.
`SIFR-WORKSPACE-0000`	`WORKSPACE`	Reserved family base; not emitted as a diagnostic.
`SIFR-PACKAGE-0000`	`PACKAGE`	Reserved family base; not emitted as a diagnostic.
`SIFR-PACKAGE-0105`	`PACKAGE`	Retired: Cargo credential failures are wrapped by `SIFR-PACKAGE-0101`.
`SIFR-PACKAGE-0302`	`PACKAGE`	Reserved for future backend trust diagnostics.
`SIFR-PACKAGE-0306`	`PACKAGE`	Reserved for future backend trust and feature diagnostics.
`SIFR-PACKAGE-0307`	`PACKAGE`	Reserved for future backend trust and feature diagnostics.
`SIFR-PACKAGE-0308`	`PACKAGE`	Reserved for future backend trust and feature diagnostics.
`SIFR-PACKAGE-0309`	`PACKAGE`	Reserved for future backend trust and feature diagnostics.
`SIFR-CODEGEN-0000`	`CODEGEN`	Reserved family base; not emitted as a diagnostic.
`SIFR-BUILD-0000`	`BUILD`	Reserved family base; not emitted as a diagnostic.
`SIFR-INTERNAL-0000`	`INTERNAL`	Reserved family base; not emitted as a diagnostic.

​Families

​Active Codes

​Reserved Codes

Families

Active Codes

Reserved Codes