Hard crash on STPColorUtils > perceivedBrightnessForColor

[spencerkohan]

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Summary

There's a hard crash from this method if the navigation bar color is UIColor.white:

• (CGFloat)perceivedBrightnessForColor:(UIColor *)color {
  const CGFloat *component = CGColorGetComponents(color.CGColor);
  CGFloat brightness = ((component[0] * 299) + (component[1] * 587) + (component[2] * 114)) / 1000;
  return brightness;
  }

Basically if the color is defined using white/alpha rather than rgba, *component here will not have 3 values, and you get an exec bad acess

Code to reproduce

Just try calling this method with a nav bar with the tint color set to UIColor.white

iOS version

11

Installation method

cocoapods

SDK version

latest

[danj-stripe]

Hi @spencerkohan,

Thanks for finding & reporting this! I had to turn on Address Sanitization before I saw the crash, but once I did it was 100% reproducible.

I've merged a fix, and it should go out in our next release.

Thanks!
Dan