Files
sx/examples/1231-ffi-extern-undeclared-lib.sx
agra 811a280517 refactor(ffi-linkage): Phase 9.3 — purge 'foreign' from comments (src caps + examples + docs)
src/: ~21 capital-Foreign comments the case-sensitive verify grep missed
(Foreign-class→Runtime-class, Foreign path→Runtime path, Foreign decls→Extern decls,
FOREIGN function→extern function) across calls/inst/ffi_objc/jni_descriptor/emit_llvm/
c_import/lower.*/ops. src 'foreign' now = ONLY the hash_foreign token + 4 rejection
messages (9.0-delete targets). examples/*.sx comments → extern/runtime-class (1219
stdout regen; KEPT 1176). docs/inline-asm-design + debugger purged. Comments only —
no build impact. 9.0 ratified: DELETE hash_foreign token next.
2026-06-15 10:52:56 +03:00

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// An `extern LIB "csym"` reference must name something real, exactly like
// its `extern LIB` twin (example 1620): `nosuchunit` names neither a
// #library constant nor a named `#import c` unit, so this is a compile-time
// diagnostic — the bogus library reference is caught BEFORE the symbol
// would silently resolve through whatever image happens to carry it.
//
// Regression (FFI-linkage Part B): `checkForeignRefs` validated only a
// `extern` (extern-import shape) library_ref and skipped the `extern` keyword's
// `extern_lib`, so a bogus `extern` lib reference compiled silently (the
// symbol resolved via the default image and ran). Prerequisite for
// migrating the fn-decl `extern` path onto `extern`.
#import "modules/std.sx";
c_abs :: (n: i32) -> i32 extern nosuchunit "abs";
main :: () -> i32 {
print("c_abs = {}\n", c_abs(-5));
0
}