Files
sx/examples/1207-ffi-foreign-global-from-helper.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

29 lines
946 B
Plaintext

// `xx @<foreign_global>` round-trips through a non-main helper
// function: the helper's `xx @__stdinp` cast lowers to a `bitcast`
// IR opcode that emit_llvm.zig dispatches to `LLVMBuildPtrToInt`
// (BitCast doesn't accept ptr↔int on modern LLVM with opaque
// pointers), and a `u64`-returning function correctly returns
// the address.
//
// Was issue-0037 — the helper used to emit `ret i64 undef` because
// `coerceToType` had no pointer↔integer case, so the explicit
// `xx ptr` cast produced an unchanged pointer value handed to a
// `ret i64` slot.
#import "modules/std.sx";
__stdinp : *void #foreign;
stdinp_addr_via_helper :: () -> u64 {
xx @__stdinp
}
main :: () -> i32 {
direct : u64 = xx @__stdinp;
via_helper := stdinp_addr_via_helper();
print("direct non-null = {}\n", direct != 0);
print("helper non-null = {}\n", via_helper != 0);
print("eq = {}\n", direct == via_helper);
0
}