Files
sx/examples/0515-packs-pack-type-position-three.sx
agra 4e942b5373 test: migrate examples to XXXX-category-name layout + split expected streams
Rename all example tests/companions to the XXXX-category-test-name scheme
(per-category 100-blocks: basic 0010, types 0100, ... errors 1000,
diagnostics 1100, ffi 1200, ffi-objc 1300, ffi-jni 1400, vectors 1500,
platform 1600). Companions and dir/C fixtures move in lockstep with their
parent test; #import/#source/#include paths rewritten to match.

Expected output now lives in examples/expected/ (a sibling dir of the
tests) split into three streams per the new convention:
  <name>.exit / <name>.stdout / <name>.stderr  (+ optional <name>.ir)

run_examples.sh rewritten: scans examples/ and issues/ for an
expected/<name>.exit marker, captures stdout and stderr separately (no
more 2>&1), compares each stream + exit + optional IR snapshot.

Behavior validated unchanged: every renamed test reproduces its prior
merged output + exit (diffs limited to file paths/basenames embedded in
diagnostics + traces, which correctly reflect the new names). Suite:
292 passed, 0 failed. 50-smoke.sx split + issue relocation + docs follow
in subsequent commits.
2026-06-01 19:05:15 +03:00

22 lines
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// Variadic heterogeneous type packs — step 3 complex smoke.
//
// Three-element pack with `$args[2]` (the third element) used in
// the return-type position. Confirms:
// - Multi-arg packs index past the zeroth element correctly.
// - Three distinct call shapes get three distinct monos.
// - The return-type slot is correctly substituted per-mono so
// the inferred caller type matches what the body actually
// returns (string / s64 / bool here).
#import "modules/std.sx";
third :: (..$args) -> $args[2] => args[2];
main :: () -> s32 {
a := third(1, 2, "third"); // (s64, s64, string) → "third"
b := third(true, 3.14, 99); // (bool, f64, s64) → 99
c := third("a", "b", false); // (string, string, bool) → false
print("{} {} {}\n", a, b, c);
return 0;
}