Files
sx/examples/0508-packs-pack-generic-ret.sx
agra d8076b9333 lang: rename signed integer types sN -> iN
Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.

Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).

Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.

zig build test: 426/426; examples suite: 595/595.
2026-06-12 09:31:53 +03:00

24 lines
790 B
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// Variadic heterogeneous type packs — follow-up #2 (generic $R
// return type).
//
// A pack-fn's return type can be a generic name (`$R`) — bound at
// the call site to match the body's natural type or the caller's
// target. Today's `monomorphizePackFn` calls `resolveReturnType`
// which treats `$R` as an opaque struct, so the mono's signature
// gets a wrong ret_ty and the value is silently zero / garbage.
//
// `first(42)` should return 42; the lock-in pins today's `0`.
// Next commit infers the ret type from the body's tail expression
// (or first `return X;`) and rebuilds the mono signature.
#import "modules/std.sx";
first :: (..$args) -> $R => args[0];
main :: () -> i32 {
a : i64 = first(42);
b : i64 = first(99);
print("{} {}\n", a, b);
return 0;
}