Author vstinner
Recipients barry, pitrou, rhettinger, serhiy.storchaka, skrah, vstinner
Date 2017-09-05.23:06:48
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Message-id <1504652808.78.0.754827617442.issue31338@psf.upfronthosting.co.za>
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+#define Py_UNREACHABLE() abort()

Using such macro, I don't think that __builtin_unreachable() is useful.

https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html

Another use for __builtin_unreachable is following a call a function that never returns but that is not declared __attribute__((noreturn)), as in this example: 

      (...)
      function_that_never_returns ();
      __builtin_unreachable ();

I expect abort() to be annotated with __attribute__((noreturn)) on the C library used GCC.
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Date User Action Args
2017-09-05 23:06:48vstinnersetrecipients: + vstinner, barry, rhettinger, pitrou, skrah, serhiy.storchaka
2017-09-05 23:06:48vstinnersetmessageid: <1504652808.78.0.754827617442.issue31338@psf.upfronthosting.co.za>
2017-09-05 23:06:48vstinnerlinkissue31338 messages
2017-09-05 23:06:48vstinnercreate