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sx/examples/ffi/1204-ffi-fnptr-cast-large-aggregate.sx
agra 66bdc70bf1 test: group examples into per-category folders
Move examples/*.sx and their expected/ snapshots into per-category
subfolders (examples/<category>/...). Folder = leading filename token,
with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus
runner and LSP sweep now discover each category's expected/ dir, while
issues/ stays flat. Example 1058's repo-root-relative companion import
is made file-relative. Path strings embedded in 164 snapshots were
regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
2026-06-21 14:41:34 +03:00

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// Pure-sx fn-pointer cast: a function-pointer typed without `abi(.c)`
// keeps the default (sx) calling convention. Passing a >16-byte aggregate
// through that pointer must not get the C-ABI byval coercion — the sx-CC
// callee expects the struct as an SSA value, not as a `ptr byval(<T>)`.
//
// Pair with examples/86-abi-c-fnptr-large-aggregate.sx, which covers
// the opposite arm (fn-pointer typed `abi(.c)` does get byval).
#import "modules/std.sx";
Wide :: struct {
a: i64; b: i64; c: i64; d: i64;
}
accept :: (w: Wide) -> i64 {
w.a + w.b + w.c + w.d
}
main :: () -> i32 {
w := Wide.{ a = 1, b = 10, c = 100, d = 1000 };
direct := accept(w);
if direct != 1111 { return 1; }
fn_ptr : (Wide) -> i64 = xx accept;
indirect := fn_ptr(w);
if indirect != 1111 { return 2; }
0
}