Struct DebugFrameEntry 

#[repr(C)]
pub struct DebugFrameEntry {
    pub meta: *const FunctionDebugMeta,
    pub values: *mut Option<GcRef>,
}

One live call’s debug frame: which function, and where its value slots are.

This is the whole of what a frame is — everything else about the call is static and lives in FunctionDebugMeta, and the parent frame is the entry below this one on the stack.

Claimed by bumping the DebugFrameStack’s top in the prologue and released by restoring the saved base in the epilogue.

Fields

meta: *const FunctionDebugMeta

The static metadata for the function this call is executing.

values: *mut Option<GcRef>

The base of this call’s run of meta.local_count value slots inside the DebugValueStack.

Implementations

impl DebugFrameEntry

pub const META_OFFSET: i32

The byte offsets generated code writes at. Derived from the #[repr(C)] layout, like every other offset the backend emits (Appendix B), so a reorder here is a recompiled constant rather than a silent miscompile.

pub const VALUES_OFFSET: i32

pub const SIZE: i64

The stride the frame stack’s top moves by, per call.

pub const fn empty() -> DebugFrameEntry

The zero value a fresh reservation holds: no function, no values.

A claimed-but-unwritten entry is not a state generated code can be observed in — the prologue’s claim and its two stores are straight-line with nothing between them — so this exists for SlotStack::new, not as a case the snapshot walker handles.

Trait Implementations

impl Clone for DebugFrameEntry

fn clone(&self) -> DebugFrameEntry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DebugFrameEntry