xCode 6 how to fix “Use of undeclared identifier” for automatic property synthesis?

Question

I\'m using xCode6 Beta 3, and am running into an issue where a code which previously compiled fine (xCode 5.1.1 or xCode6 beta 2) suddenly started to give me \"Use o

Answer 1

At first I thought it was a beta version bug, but today I saw that this type of errors occur on the XCode 6 GM Seed also, though I'm yet to discover in which particular cases.

Anyway, the fix is to add a synthesize statement in the @implementation block, explicitly declaring the name of the ivar as well as the property:

@synthesize property = _property