PFObject.state causes crash

[craiggrummitt]

If a PFObject contains a variable called 'state' saving this object causes a crash.
You can find a sample bare bones project based on Parse Starter Project(v1.8) illustrating the bug here:
https://github.com/craiggrummitt/ParseStateBug

Error in console:
NSInvalidArgumentException', reason: '-[Swift._NSContiguousString isDeleted]: unrecognized selector sent to instance ...'

[nlutsenko]

Hey @craiggrummitt thanks for reporting this with a repro.
Will investigate further and let you know what I find.

[richardjrossiii]

Found the issue. It is related to our automatic inferring of instance variables for subclassed objects. For some backwards compatibility reason, if you have an instance variable on your PFObject subclass with the same name (or the name + underscore) as one of your properties, we make the @dynamic implementation of that property set the iVar, not the PFObject dictionary.

Now, normally this isn't an issue. It works in 99% of all cases. However, in the case of state, we have an iVar on PFObject named _state, which causes our method resolution (found in PFObjectSubclassingController) to write to the _state iVar instead of the object dictionary. PR with a fix incoming shortly.

[richardjrossiii]

Should be fixed in #35.