//ww:error "arithmetic on non-numeric type"
// Lifted from test/wcc/949_dotfield_compound_run.c reject row "dotfld_he_slice"
// (#34/rule-7): a compound assign on a single-dot SLICE field is unwired in
// both stages and MUST loud-fail. The substring is the shared diagnostic body
// — byte-identical on both stages, pinned to "slice field" so it cannot also
// match the float/str/tagged rows (no file:line, no cstage "ww: " prefix —
// both differ cs vs ww).
package main;
type S = struct { f: []u8, g: int };
export fn main() i32 = {
	let b: [2]u8 = [1u8, 2u8];
	let s: S = S{f=b[0:2], g=0};
	s.f += b[0:1];
	return 0;
};