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ww/test/wcc/data/lenidx_sliceexpr/case.ww
Hojun-Cho 04f163dde6 test: migrate 802_lenidx to @test + runww rejects, retire C twin (fold-3)
#19 len/index family: value rows -> test/lang/lenidx_test.ww (primitive-only asserts), 3 reject (callres/sliceexpr/strlit) -> runww //ww:error dual-stage carriers. byteid floor 52->53.
2026-06-22 16:53:49 +09:00

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//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;
};