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sx/examples/atomics/1705-atomics-bool-byte-promoted.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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// Atomic(bool) — a sub-byte (i1) element atomically loaded/stored. LLVM
// rejects a sub-byte atomic ("atomic memory access' size must be byte-
// sized"), so codegen performs the access in the byte storage type (i8)
// and trunc/zext's the value at the boundary. (rmw/cmpxchg on a bool is
// rejected at the sx level — integer-only — so only load/store apply.)
// Regression (issue 0152): Atomic(bool) emitted an i1 atomic that failed
// LLVM verification; Future.canceled: Atomic(bool) in the async layer hit it.
#import "modules/std.sx";
#import "modules/std/atomic.sx";
main :: () {
a := Atomic(bool).init(false);
print("init: {}\n", a.load(.acquire)); // false
a.store(true, .release);
print("after store: {}\n", a.load(.acquire)); // true
a.store(false, .seq_cst);
print("after reset: {}\n", a.load(.seq_cst)); // false
}