Re: How to fix "misuse of 'nonnull'" warnings in Xcode 7.3?
Re: How to fix "misuse of 'nonnull'" warnings in Xcode 7.3?
- Subject: Re: How to fix "misuse of 'nonnull'" warnings in Xcode 7.3?
- From: Jens Alfke <email@hidden>
- Date: Thu, 25 Feb 2016 15:38:40 -0800
On Feb 25, 2016, at 3:31 PM, Quincey Morris < email@hidden> wrote:
It’s another example of the “any cast is a bug waiting to happen” problem that’s inherent in C-like languages.
To be fair, C++ does have const_cast, which only casts away ‘const’.
For this situation it would be nice if there was a cast like this: [hostArray addObject: (_Nonnull) url.host];
That’s exactly what the NOTNULL macro in my first message does. Its value has the same type as its argument, just with _Nonnull: #define NOTNULL(X) ((__typeof(X) _Nonnull)(X))
—Jens |
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