//ww:error "len() operand shape not place-resolvable (rule-7)"
// Lifted from test/wcc/802_lenidx_run.c reject row "reject_sliceexpr"
// (#10/#41/rule-7): len() over a SLICING expression (`xs[1:3]`) is not a
// place-resolvable operand and MUST loud-fail in both stages, not silently
// return the data pointer as the length. The substring is the shared
// diagnostic body — byte-identical on both stages (no file:line, no cstage
// "ww: " prefix — both differ cs vs ww).
package main;
export fn main() i32 = {
	let xs: []i64 = [10, 20, 30, 40];
	return len(xs[1:3]): i32;
};