CODEWITHSUNDEEP
swift
Quentin Del
Quentin Del

Reputation: 1685

EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0) on swift

I am running into this issue on this part of the code with SwiftMoment https://github.com/akosma/SwiftMoment

public func moment(_ timetoken: Int64) -> Moment {
  return moment(Int(timetoken / 10000))
}

I am not sure why it's happenning. If you have any insights, feel free to share. Thanks!

enter image description here

here is the timetoken value: timetoken 14915504189961350

It's happening on Simulator MacOS Sierra 10.12.4

Xcode 8.3.1 iOS 10.3.1 iPhone 5

Update

The issue doesnt appear on iPhone 7

Upvotes: 3

Views: 1335

Answers (1)

Martin R
Martin R

Reputation: 539685

The iPhone 5 is a 32-bit device, which means that Int is a 32-bit integer, and the result of timetoken / 10000 does not fit into an Int. In contrast to some other programming languages, an integer overflow is a fatal runtime error in Swift (which is good, because otherwise you would just get a wrong result).

I would suggest to convert the value to a TimeInterval instead (which is a floating point type, actually just a type alias for Double) and then call 

public func moment(_ seconds: TimeInterval) -> Moment

instead of 

public func moment(_ milliseconds: Int) -> Moment

Upvotes: 4

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