Files
sx/examples/0602-comptime-interp-cast-ptr-cmp.sx
agra 12bf61a9fc std: restructure step 3 — ffi/ moves, build.sx, math dir spelling, fixtures
- objc.sx, objc_block.sx (from std/) + sdl3/opengl/raylib/stb/stb_truetype/
  wasm vendor bindings (from modules/ root) -> modules/ffi/
- std/uikit.sx deleted: platform/uikit.sx already declares UIApplicationMain
  and imports objc; '#framework "UIKit"' cannot live in a file imported on
  macOS targets (unconditional link directive, UIKit is iOS-only), so the
  three iOS-only examples carry the 3-line glue inline. 1607/1608/1616 also
  un-rotted (dead ns_string -> 'xx "..."' Into conversions, callconv(.c)
  msgSend fn-ptrs) — all three build for ios-sim/ios again.
- math/math.sx -> math/scalar.sx; one spelling '#import "modules/math"'
  everywhere (4 pinned IR snapshots regenerated: dir import adds Vec2/Mat4
  to the type tables).
- compiler.sx -> build.sx (imports, CLAUDE.md bundling table, specs.md).
- testpkg/ + test_c.sx -> tests/fixtures/ (resolve CWD-relative from repo
  root, same as vendors/).
- library-internal imports use full modules/... paths (std.sx tail,
  platform/bundle.sx, fixtures).
2026-06-11 08:37:22 +03:00

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// `cast(T) val` inside a conditional, evaluated by the IR interpreter
// during a post-link callback. The `cast` syntax lowers the type arg
// (`s64`) as a `placeholder` IR op; the interpreter treats placeholders
// as undef so the comparison runs through unchanged.
#import "modules/std.sx";
#import "modules/build.sx";
libc :: #library "c";
popen :: (cmd: [:0]u8, mode: [:0]u8) -> *void #foreign libc;
puts :: (s: [:0]u8) -> s32 #foreign libc;
R :: struct { x: s32; }
bug :: (cmd: [:0]u8) -> ?R {
f := popen(cmd, "r");
if cast(s64) f == 0 { return null; }
R.{ x = 1 }
}
post_link :: () -> bool {
if r := bug("echo hi") { puts("ok"); } else { puts("null"); }
true
}
configure :: () {
opts := build_options();
opts.set_post_link_callback(post_link);
}
#run configure();
main :: () { print("rt\n"); }