Compilation fails on AppleClang and gcc-8

I tried to compile the master on my OSX laptop. I get compilation errors with both clang and gcc-8.

clang

Apple LLVM version 10.0.1 (clang-1001.0.46.3) Target: x86_64-apple-darwin18.5.0

/Users/hdembins/Code/corsika/Framework/StackInterface/testCombinedStack.cc:350:19: error: call to deleted constructor of
      'StackTestView' (aka 'SecondaryView<TestStackData, TestParticleInterface>')
    StackTestView view(particle);
                  ^    ~~~~~~~~

gcc-8

gcc-8 (Homebrew GCC 8.2.0) 8.2.0

I get this error:

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/ucred.h:94:2: error: '_Atomic' does not name a type
  _Atomic u_long          cr_ref;  /* reference count */

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