shoney.arickathil
81a9f882b5
- copy_place_text matched only bare Ident/Field/Index, so a Text-typed
single-segment interpolation ("${r.method}", r a loop borrow) passed
the place's own register through a binding/assignment boundary — the
local aliased the row's field and its overwrite freed it
- release-build crash; invisible to ASan (in-arena free, no redzones)
- now asks is_borrowed_value_t && not is_container_read — exactly
drop_fresh_text's place test; Int segments (fresh int_to_text) and
container reads (already copies) stay uncopied as before
- pinned by tests/corpus/run/interp-borrowed-field (crashed both
runtimes before the fix, 50 iterations now exact)
- gates: woc-test 540/0, oop-e2e 89/0 (ASan stage included)
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
33 lines
738 B
Text
33 lines
738 B
Text
-- probe: Text interpolation of a borrowed field inside a loop.
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-- If the interpolation segment drops the field it only borrows, repeated
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-- calls corrupt the arena and the third-ish call crashes in release.
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class Row {
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method: Text
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}
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class Tab {
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rows: multi Row
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fn scan() -> Text {
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let out = "";
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for r in self.rows {
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if out == "" { out = "${r.method}"; } else { out = "${out}, ${r.method}"; }
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}
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return out;
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}
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}
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fn main() -> Int {
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let t = Tab { rows: [] };
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push(t.rows, Row { method: "GET" });
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push(t.rows, Row { method: "POST" });
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let i = 0;
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while i < 50 {
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let s = t.scan();
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if s != "GET, POST" { print("bad: ${s} at ${i}"); return 1; }
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i = i + 1;
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}
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print("ok");
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return 0;
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}
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