d3944570b9
0156 Part 1: a single-type generic $R (parsed as comptime_pack_ref) used as a type-arg in a pack-fn body (Box($R), size_of(Box($R))) hit a missing arm in resolveTypeWithBindings -> .unresolved -> LLVM panic. Fix: mirror resolveTypeArg's comptime_pack_ref arm (look up type_bindings, else a loud diagnostic). Regression: examples/generics/0216. (Part 2 -- deferred .. spread crashes -- reframed OPEN/non-blocking.) 0157: a user generic ufcs method whose name collides with a stdlib re-export resolved via last-wins fn_ast_map with no receiver filtering, so the wrong overload won, $R never bound, and .unresolved reached LLVM. Fix: selectUfcsGenericByReceiver enumerates all module authors, keeps the receiver-binding ones, picks the most receiver-specific (concrete > bare $T), dedups re-exports, and flags a genuine tie as a deterministic 'ambiguous -- qualify' diagnostic. Regression: examples/generics/0217.
21 lines
1.0 KiB
Plaintext
21 lines
1.0 KiB
Plaintext
// issue 0156 Part 2 (OPEN, non-blocking) — a deferred `..` spread crashes the
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// backend instead of working or diagnosing. `..` is comptime-pack-only; spreading
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// a concrete tuple `w(..t)` panics (`unresolved type reached LLVM emission`), and
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// capturing a comptime pack into a closure then spreading it segfaults at runtime
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// (the deferred body re-expands the pack from the now-gone caller locals).
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//
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// Part 1 (the `$R`-single-type-arg-in-a-pack-fn LLVM panic) was a SEPARATE bug,
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// now FIXED — see examples/generics/0216-generics-typearg-in-pack-fn-body.sx.
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//
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// Not a fiber-async blocker: deferred async uses a nullary thunk that captures
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// its inputs at the call site, so no `..` spread crosses the deferral.
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#import "modules/std.sx";
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main :: () {
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w := (a: i64, b: i64) -> i64 => a + b;
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t := .{40, 2};
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out : i64 = 0; po := @out;
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captured :: () => { po.* = w(..t); }; // tuple spread inside a closure → panics
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captured();
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print("out: {}\n", out); // want: out: 42 (or a clean diagnostic)
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}
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