2cce6a3a26
Migrate the DECLS of the 7 identity-#foreign feature tests to extern/export
(1205-global/-helper, 1207, 1218-cvariadic, 1219, 1306, 1318): fn/global markers →
extern, the 2 objc import classes (1306/1318) → postfix '#objc_class("X") extern {'.
Behavior-preserving (A→B gate + existing extern twins guarantee identical output);
empty snapshot diff, corpus-validated. Comment-only #foreign in these files is left
for the Phase 9.3 doc/comment purge (comments aren't parsed → not cutover-critical).
Suite green (647 corpus / 444 unit, 0 failed).
33 lines
1.3 KiB
Plaintext
33 lines
1.3 KiB
Plaintext
// Extern data globals via `<name> : <type> #foreign;`. Lets sx code
|
|
// reference libSystem / framework symbols (NSConcreteStackBlock,
|
|
// __stdinp, etc.) for FFI bridges. Mirrors the long-standing
|
|
// `<fn> :: (...) -> ... #foreign;` form on the function side.
|
|
//
|
|
// Cross-file dimension (PLAN-FFI step 0.10): the helper companion
|
|
// `94-foreign-global-helper.sx` ALSO declares `__stdinp : *void #foreign;`.
|
|
// Both files referencing the same extern symbol must link cleanly —
|
|
// LLVM dedupes the named global, the C linker resolves both refs to
|
|
// the one libSystem symbol.
|
|
//
|
|
// We *don't* check that the helper computes the same address — see
|
|
// issue-0037 (helper-function-scoped `@foreign_global` lowers to
|
|
// undef today). When that fixes, fold the helper's address back into
|
|
// the equality check here.
|
|
|
|
#import "modules/std.sx";
|
|
#import "1205-ffi-foreign-global-helper.sx";
|
|
|
|
__stdinp : *void extern;
|
|
|
|
main :: () -> i32 {
|
|
addr_bits : u64 = xx @__stdinp;
|
|
print("stdin extern global non-null: {}\n", addr_bits != 0);
|
|
// Force the helper symbol to participate in linking (otherwise the
|
|
// imported file's #foreign decl might get dropped by the
|
|
// dead-code stripper). The actual return value is busted today
|
|
// — see issue-0037.
|
|
_ := stdinp_addr_present();
|
|
print("helper file linked: true\n");
|
|
0
|
|
}
|