Unittests test_clone and test_create_cl_kernel fail about coriander HOT 6 CLOSED

# equery u sys-devel/llvm
[ Legend : U - final flag setting for installation]
[        : I - package is installed with flag     ]
[ Colors : set, unset                             ]
 * Found these USE flags for sys-devel/llvm-3.9.1-r1:
 U I
 - - abi_x86_32               : 32-bit (x86) libraries
 + + clang                    : Build the clang C/C++ compiler
 - - debug                    : Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see
                                https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
 - - default-compiler-rt      : Use compiler-rt instead of libgcc as the default rtlib for clang
 - - default-libcxx           : Use libc++ instead of libstdc++ as the default stdlib for clang
 - - doc                      : Build and install the HTML documentation and regenerate the man pages
 - - gold                     : Build the gold linker plugin
 - - libedit                  : Use the libedit library (replacement for readline)
 + + libffi                   : Enable support for Foreign Function Interface library
 - - llvm_targets_AArch64     : AArch64 CPU target (arm64 in Gentoo)
 + + llvm_targets_AMDGPU      : AMDGPU target (supports R600 and GCN GPUs)
 - - llvm_targets_ARM         : ARM CPU target
 - - llvm_targets_BPF         : Berkeley Packet Filter target
 - - llvm_targets_Hexagon     : Qualcomm Hexagon DSP target
 - - llvm_targets_MSP430      : MSP430 CPU target (experimental)
 - - llvm_targets_Mips        : MIPS CPU target (includes MIPS64)
 - - llvm_targets_NVPTX       : NVIDIA PTX (GPU) target (32-bit and 64-bit)
 - - llvm_targets_PowerPC     : PowerPC CPU target (PPC32 and PPC64)
 - - llvm_targets_Sparc       : Sparc CPU target
 - - llvm_targets_SystemZ     : SystemZ (s390x) CPU target
 - - llvm_targets_XCore       : XCore CPU target
 - - multitarget              : Build all host targets (default: host only)
 + + ncurses                  : Support querying terminal properties using ncurses' terminfo
 - - ocaml                    : Add support/bindings for the Ocaml language
 + + python                   : Add optional support/bindings for the Python language
 + + python_targets_python2_7 : Build with Python 2.7
 + + sanitize                 : Build compiler-rt's sanitizers
 + + static-analyzer          : Install the Clang static analyzer (requires USE=clang)
 - - test                     : Workaround to pull in packages needed to run with FEATURES=test. Portage-2.1.2 handles this internally, so don't set it in
                                make.conf/package.use anymore
 + + xml                      : Add support for XML files