Files
ww/test/wcc/data/globalconst_str_widen/case.ww
Hojun-Cho c421c2b20a cgen: key the str/slice arg recognizers off the checker stamp
The wwstage nodeisstr/nodeisslice recognizers were name-keyed for
every non-local shape: an indirect fn-pointer callee ((*f)() — the
errnotest #59.5 divergence, streq receiving a shifted register file)
and module-global let/const idents (path.sepstr — union-widen pushes
zero-filled len/cap) both fell to false while cstage keys off the
checker stamp unconditionally. Both recognizers now fall back to the
stamped n.type_; push and pop sites share them, so the drain stays
balanced by construction. Graduates the #59.5 errnotest pin.
2026-08-08 00:58:04 +09:00

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//ww:run
// A module-global const str widened into a tagged-union call arg.
// The pre-fix wwstage nodeisstr N_IDENT arm knew only frame slots and
// defs, so the widen push took the scalar arm and zero-filled len/cap
// (path.sepstr's strings.hasprefix shape).
package main;
const gs: str = "hello";
fn f(x: (str | i32)) i32 = {
match (x) {
case let s: str => {
if (s.len != 5) { return 1; };
if (s[4] != 111u8) { return 2; };
return 0;
};
case let v: i32 => { return 3; };
};
return 4;
};
fn main() i32 = {
return f(gs);
};