I have the same problem. This may not actually be related to CocoaPods 0.34.0.rc2 , as I also thought at the beginning and is a Specta problem.
Commenting on the code below, SpectaSupport.h fixes the build problem:
#undef _XCTRegisterFailure #define _XCTRegisterFailure(condition, format...) \ ({ \ _XCTFailureHandler((id)self, YES, __FILE__, __LINE__, condition, @"" format); \ })
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