Function push_frame 

pub unsafe fn push_frame(
    ctx: *mut RuntimeContext,
    meta: *const FunctionDebugMeta,
) -> DebugFrameGuard

Claim a debug frame for meta on ctx’s debug stacks, the way a generated prologue does: one frame entry, and meta.local_count value slots that start as None.

Safety

ctx must point at a live context wired by Runtime::context; meta must point at a FunctionDebugMeta (with a locals array of local_count entries) valid for at least as long as the returned guard; and the runtime that owns the stacks must outlive the guard.

Panics

If ctx is null, either header is null, or meta is null.