Files
sx/examples/1048-errors-cleanup-absorption.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

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// Failable calls in cleanup bodies must be absorbed locally (ERR step E1.7). A
// `defer` / `onfail` body runs while the block is already exiting, so a failable
// it calls has nowhere to propagate — it must be handled in place with `catch`
// or an `or <value>` terminator. This file shows the accepted forms; the bare
// (un-absorbed) form is rejected in 1049.
#import "modules/std.sx";
E :: error { Bad }
failing :: () -> !E { raise error.Bad; }
recover :: () -> (i32, !E) { raise error.Bad; }
work :: (n: i32) -> !E {
defer print("defer: always\n"); // plain cleanup
onfail { failing() catch (e) print("onfail: caught (catch)\n"); } // catch absorbs
onfail { x := recover() or 7; print("onfail: x={} (or)\n", x); } // or-value absorbs
if n < 0 { raise error.Bad; }
return;
}
main :: () -> i32 {
print("[error]\n");
a := work(-1); // raises → onfail bodies fire, then defer (reverse decl order)
print("[ok]\n");
b := work(2); // success → only defer fires
return 0;
}