[flang-commits] [PATCH] D137859: [flang] Restore ENUM_CLASS() to be compilation-time code

[Renaud Kauffmann via Phabricator via flang-commits]

Renaud-K added a comment.

Consider this program:

  #include "enum_class.h"
  #include <iostream>
  
  ENUM_CLASS(RelationalOperator, LT, LE, EQ, NE, GE, GT)
  
  int main() {
    std::cout << EnumToString(RelationalOperator::LT) << std::endl;
    std::cout << EnumToString(RelationalOperator::LE) << std::endl;
    std::cout << EnumToString(RelationalOperator::EQ) << std::endl;
    std::cout << EnumToString(RelationalOperator::NE) << std::endl;
    std::cout << EnumToString(RelationalOperator::GE) << std::endl;
    std::cout << EnumToString(RelationalOperator::GT) << std::endl;
    return 0;
  }

Then compile it gcc 9.3.0

  g++ flang_main.cpp -std=c++17 -g -O2 -fno-inline
  gdb a.out
  b enum_class.h:43
  r
  Breakpoint 1, Fortran::common::EnumNames<6ul> (p=0x555555555648 "LT, LE, EQ, NE, GE, GT") at enum_class.h:43
  43        for (; *p; ++p) {

Is this expected?


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  https://reviews.llvm.org/D137859/new/

https://reviews.llvm.org/D137859