bpo-38205: Py_UNREACHABLE() calls Py_FatalError() by vstinner · Pull Request #16290 · python/cpython
#if defined(RANDALL_WAS_HERE) #define Py_UNREACHABLE() do { \ fputs( \ "ERROR:\n\n" \ "If you're seeing this, the code is in what I thought was\n" \ "an unreachable state.\n\n" \ "I could give you advice for what to do, but honestly, why\n" \ "should you trust me? I clearly screwed this up. I'm writing\n" \ "a message that should never appear, yet I know it will\n" \ "probably appear someday.\n\n" \ "On a deep level, I know I'm not up to this task.\n" \ "I'm so sorry.\n\n" \ "https://xkcd.com/2200\n", stderr); \ abort(); \ } while(0) #define Py_UNREACHABLE() \ Py_FatalError( \ "If you're seeing this, the code is in what I thought was\n" \ "an unreachable state.\n\n" \ "I could give you advice for what to do, but honestly, why\n" \ "should you trust me? I clearly screwed this up. I'm writing\n" \ "a message that should never appear, yet I know it will\n" \ "probably appear someday.\n\n" \ "On a deep level, I know I'm not up to this task.\n" \ "I'm so sorry.\n" \ "https://xkcd.com/2200") #elif defined(Py_DEBUG) #define Py_UNREACHABLE() do { \ fputs( \ "ERROR:\n\n" \ "We've reached an unreachable state. Anything is possible.\n" \ "The limits were in our heads all along. Follow your dreams.\n\n" \ "https://xkcd.com/2200\n", stderr); \ abort(); \ } while(0) #define Py_UNREACHABLE() \ Py_FatalError( \ "We've reached an unreachable state. Anything is possible.\n" \ "The limits were in our heads all along. Follow your dreams.\n" \ "https://xkcd.com/2200") #else #define Py_UNREACHABLE() abort() #define Py_UNREACHABLE() \ Py_FatalError("Unreachable C code path reached") #endif
#endif /* Py_PYMACRO_H */