Message301394
+#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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2017-09-05 23:06:48 | vstinner | set | recipients:
+ vstinner, barry, rhettinger, pitrou, skrah, serhiy.storchaka |
2017-09-05 23:06:48 | vstinner | set | messageid: <1504652808.78.0.754827617442.issue31338@psf.upfronthosting.co.za> |
2017-09-05 23:06:48 | vstinner | link | issue31338 messages |
2017-09-05 23:06:48 | vstinner | create | |
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