svn commit: r341825 - in head: . contrib/compiler-rt contrib/compiler-rt/include/sanitizer contrib/compiler-rt/include/xray contrib/compiler-rt/lib/BlocksRuntime contrib/compiler-rt/lib/asan contri...

[Charlie Li]

On 11/12/2018 14:05, Dimitry Andric wrote:
>   head/contrib/libc++/include/type_traits
> 
The change to the above named file breaks building any C++ code
containing _Float16 with devel/llvm80-8.0.0.r2 (and probably later, but
not 8.0.0.r1 or any earlier LLVM) on head (but not
projects/clang800-import, obviously). Example error, from our own copy
of LLVM libunwind:

--- libunwind.o ---
In file included from
/usr/src/contrib/llvm/projects/libunwind/src/libunwind.cpp:18:
In file included from
/usr/obj/usr/src/amd64.amd64/tmp/usr/include/c++/v1/new:91:
In file included from
/usr/obj/usr/src/amd64.amd64/tmp/usr/include/c++/v1/exception:83:
/usr/obj/usr/src/amd64.amd64/tmp/usr/include/c++/v1/type_traits:740:56:
error: _Float16 is not supported on this target
template <>          struct __libcpp_is_floating_point<_Float16>    :
public true_type {};
                                                       ^
1 error generated.
*** [libunwind.o] Error code 1

Upstream LLVM has already reverted this: https://reviews.llvm.org/D53670

world builds successfully after applying the upstream revert. Ports that
use the clang portion of devel/llvm80 when set in DEFAULT_VERSIONS, ie
gecko@, also build successfully.

-- 
Charlie Li
Can't think of a witty .sigline today…

(This email address is for mailing list use; replace local-part with
vishwin for off-list communication if possible)

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