// Stream B1 (fibers) step B1.0a — regression for an adversarial-review finding.
//
// `abi(.pure)` on a GENERIC function is monomorphized through a different
// Function-creation path (lower/generic.zig) than a plain decl, and originally
// that path left `is_pure` unset — so the emit bail never fired and a framed
// body shipped (it "returned 42" but leaked the prologue's stack adjustment:
// the exact silent corruption the lock exists to prevent). This example pins
// the now-correct behavior: a `.pure` generic instance reaches the loud emit
// bail (build-gating, nonzero exit) just like a plain `.pure` decl. The sibling
// pack-expansion path (lower/pack.zig) was hardened the same way. Host-
// independent (the bail fires before instruction selection), so no `.build`
// pin. B1.0b will turn the plain-decl form (1800) green; this generic case
// stays a bail-lock (a naked generic is exotic and out of B1's scope).
answer :: ($T: Type) -> i64 abi(.pure) {
    asm volatile {
        #string A
        mov x0, #42
        ret
A
    };
}

main :: () -> i64 { return answer(i64); }