[llvm-bugs] [Bug 51759] x86-64: __builtin_bit_cast(anything, long double) wrongly errors with "indeterminate value"

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=51759

Arthur O'Dwyer <arthur.j.odwyer at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Arthur O'Dwyer <arthur.j.odwyer at gmail.com> ---
> I believe that long double in this case has 80 value bits and 48 padding bits

Ah, I see. Well, I'll just have to find some other way to inspect those bits
(inside std::strong_order), then. (And/or make std::strong_order non-constexpr
for long doubles. The Standard doesn't seem to specify whether it needs to be
compile-time-evaluable for any particular type, which I think is a known LWG
issue in general...)

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