Files
sx/examples/0047-basic-loop-local-stack-reuse.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

27 lines
789 B
Plaintext

// Loop-body locals reuse one stack slot per frame: a body-declared local
// (and every compiler temp) must not grow the stack per iteration, so
// million-iteration loops run in constant stack. Covers body locals,
// nested loops (the inner loop's hidden index slot), and element reads.
// Regression (issue 0109): allocas were emitted at their use site, so each
// iteration re-executed them — LLVM only reclaims allocas at `ret`, and
// these loops segfaulted on stack exhaustion.
#import "modules/std.sx";
main :: () -> i32 {
sum := 0;
for 0..1000000 (i) {
buf : [128]i64 = ---;
buf[0] = i;
sum += buf[0];
}
print("sum={}\n", sum);
n := 0;
for 0..3000000 (i) {
for 0..1 (j) { n += 1; }
}
print("n={}\n", n);
0
}