https://llvm.org/bugs/show_bug.cgi?id=21716

David Majnemer <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|WORKSFORME                  |---

--- Comment #2 from David Majnemer <[email protected]> ---
Tobias, this is with regards to variants of __builtin_add_overflow which are
generic over their arguments.

Clang doesn't have this.  Instead it has every variant of unsigned and signed
addition multiplied by the number of different type arguments.  The GCC variant
applied the usual type conversions to find a common type and then performs the
overflow checking.

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