pub const MAX_FRAME_WORDS: usize = 65_536;Expand description
The most words one function’s frame may hold.
A slot operand is sixteen bits, so slots 0 through 65,535 are nameable and
a frame of exactly 65,536 words is exactly encodable. ADR 0041 adopts this
as a compiler limit and crate::lower is where a frame over it is refused,
with a diagnostic at the declaration — never a truncation and never a wrap.
It is not the run’s stack budget. SEGMENT_WORDS bounds one whole
task’s stack at 1 << 20 words and is answered at run time by
Memory::push_frame; this bounds one function, at compile time, and is
one sixteenth of that.