[Openmp-commits] [PATCH] D56397: [OpenMP] Silence warning about fallthrough

David Callahan via Phabricator via Openmp-commits openmp-commits at lists.llvm.org
Wed Feb 6 12:23:51 PST 2019


david2050 added a comment.

This change breaks builds fort compilers because the  "&&" in the preprocessor does not protect the case that __has_cpp_attribute is not defined. Better

  #if __cplusplus > 201402L  
  #if __has_cpp_attribute(fallthrough)
  #  define KMP_FALLTHROUGH() [[fallthrough]]
  #elif __has_cpp_attribute(clang::fallthrough)  
  #  define KMP_FALLTHROUGH() [[clang::fallthrough]]
  #elif __has_attribute(fallthough) || _GNUC_VER >= 700
  #  define KMP_FALLTHROUGH() __attribute__((__fallthrough__))
  #endif
  #endif
  #if !defined(KMP_FALLTHROUGH)
  #  define KMP_FALLTHROUGH() ((void)0)
  #endif


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D56397/new/

https://reviews.llvm.org/D56397





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