arc4random_uniform not available in Xcode 7.0 beta (7a176x) on OSX 10.10.4

Question

I'm trying to use arc4random_uniform in the Xcode build mentioned, but it seems to no longer be available:

An alt-click on the available functions show that they're declared in stdlib.h, which has them listed as follows:

It seems strange that its no longer available. This particular stdlib.h is within the iOS 9.0 simulator directory at usr/include/stdlib.h not sure if that helps or not.

I have the latest command line tools installed. Not sure what's going on. Any advice / help / fixes are much appreciated. Thanks in advance.

UPDATE

Seems to be an Xcode bug, references for which are:

• 22275032
• 22275176

Answer 1

It seems to be still available (I have been using it in 7A176x, but on El Capitan), it is just not shown in the suggestions.