Wrong ObjC type encoding for BOOL-NSNumbers on arm64

Originator:nicolas.bouilleaud
Number:rdar://15731959 Date Originated:2013-12-30
Status:Open Resolved:
Product:iOS SDK Product Version:7.1b2
Classification:Serious Bug Reproducible:Always
 
Summary:
On iOS - arm64, the following code:
````
[@YES objCType]
````
returns `"c"`, as it does on arm32. However, `BOOL` is now typedef'd as `bool` (the C++ bool), and the signature of methods returning a `BOOL` is now `"B"`.

For consistency, [NSNUmber objCType] for BOOL-based NSNumbers should now return "B".

This is especially an issue when using NSInvocations. See for example this workaround in OCMock : https://github.com/erikdoe/ocmock/commit/77400c22b5bafd8aaaa75f90a1d997838204577a

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