Enum RuntimeWarning 

#[non_exhaustive]
pub enum RuntimeWarning {
    UninitializedTemp {
        slot: u16,
        name: String,
    },
}

A non-fatal condition the VM reported while a story was running (issue #3354, RULED 2026-09-01 option C).

Warnings never interrupt play — that is the point of the ruling: what plays in Inky plays in brink. They accumulate on the flow that produced them and are drained by the host (crate::Story::take_runtime_warnings, crate::FlowInstance::take_runtime_warnings), which decides whether to print them (the CLI player does), surface them in a panel (the studio does), or ignore them (a shipped game).

Accumulation is capped at RUNTIME_WARNING_CAP per flow between drains: a loop that reads an unset temp on every iteration would otherwise grow this list without bound.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

UninitializedTemp

A ~ temp slot was read before its declaring statement ran, so the read produced ink’s missing-variable default instead of faulting on the next operator.

The compile-time half of the same story is brink_ir::DiagnosticCode::E193, which names the read and the declaration in the editor before the author plays. Message text mirrors the C# reference’s own wording, since matching what an author already recognizes from Inky is the point.

Fields

slot: u16

The call frame’s temp slot that was read.

name: String

The variable as the author spelled it, already quoted ('n') when the story carries a DebugInfo section to resolve the slot through; temp slot 3 when it does not (debug info is opt-in at codegen — EmitOptions::emit_debug_info).

Trait Implementations

impl Clone for RuntimeWarning

fn clone(&self) -> RuntimeWarning

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RuntimeWarning

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

Formats the value using the given formatter.

impl Display for RuntimeWarning

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

Formats the value using the given formatter.

impl Eq for RuntimeWarning

impl Error for RuntimeWarning

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for RuntimeWarning

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RuntimeWarning