[PATCH] D75199: Build fix: Turn off _GLIBCXX_DEBUG on gcc 9

[serge via Phabricator via llvm-commits]

serge-sans-paille added a comment.

@nhaehnle : something like

  CHECK_CXX_SOURCE_COMPILES("
  #define _GLIBCXX_DEBUG
  #include <algorithm>
  
  int main(int argc, char ** argv) {
      static constexpr int data []= {0, 1};
      constexpr const int* min_elt  = std::min_element(&data[0], &data[2]) ;
      return 0;
  }" CXX_SUPPORTS_GLIBCXX8DEBUG)


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D75199/new/

https://reviews.llvm.org/D75199