[LLVMbugs] [Bug 8105] __has_trivial_copy does not work with void, arrays with incomplete or complete bounds

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sun Oct 9 14:24:09 PDT 2011


Douglas Gregor <dgregor at apple.com> changed:

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

--- Comment #4 from Douglas Gregor <dgregor at apple.com> 2011-10-09 16:24:08 CDT ---
(In reply to comment #3)
> (In reply to comment #2)
> > Again, if there is some reason we do not want _has_trivial_copy(T) to model the
> > behavior intended for std::has_copy_constructor<T>, then I can work around it
> > in the library (libc++).  Just it would be simpler to drop straight through.
> I'd prefer to have __has_trivial_copy(T) model the behavior of
> std::has_copy_constructor<T>. It's a better specification than "what GCC does",
> and more useful besides.

Older and wiser, I now think that it's better to follow GCC's specification to
improve compatibility, even though it's suboptimal for libc++. Clang is already
following GCC's specification, documented here:


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