unreachable.h

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#pragma once
 
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
 
#define UNREACHABLE()                                                          \
  do {                                                                         \
    fprintf(stderr, "%s:%d: claimed unreachable code was reached\n", __FILE__, \
            __LINE__);                                                         \
    abort();                                                                   \
  } while (0)