define hidden swiftcc i64 @"$S1a10HaveResultV06returnB4CodeyS2iF"(i64, i64) #0 { ↑ returnResultCode が returnB4Code にsubstされてる・・・define hidden swiftcc i64 @"$S1a10HaveResultV06returnB4CodeyS2iF"(i64, i64) #0 { ↑ returnResultCode が returnB4Code にsubstされてる・・・