Bug#876696: clang-6.0: clangd-6.0 error

[Damien R.]

Package: clang-6.0
Version: 1:6.0~svn311834-1
Severity: important

Launching clangd-6.0 failed with the following output:
: CommandLine Error: Option 'help-list' registered more than once!
LLVM ERROR: inconsistency in registered CommandLine options

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.12.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages clang-6.0 depends on:
ii  binutils                 2.29.1-3
ii  libc6                    2.24-17
ii  libc6-dev                2.24-17
ii  libclang-common-6.0-dev  1:6.0~svn311834-1
ii  libclang1-6.0            1:6.0~svn311834-1
ii  libgcc-7-dev             7.2.0-7
ii  libgcc1                  1:7.2.0-7
ii  libjsoncpp1              1.7.4-3
ii  libllvm6.0               1:6.0~svn311834-1
ii  libobjc-7-dev            7.2.0-7
ii  libstdc++-7-dev          7.2.0-7
ii  libstdc++6               7.2.0-7
ii  libtinfo5                6.0+20170902-1
ii  zlib1g                   1:1.2.8.dfsg-5

Versions of packages clang-6.0 recommends:
ii  llvm-6.0-dev  1:6.0~svn311834-1
ii  python        2.7.14-1

Versions of packages clang-6.0 suggests:
pn  clang-6.0-doc  <none>
pn  gnustep        <none>
pn  gnustep-devel  <none>
pn  libomp-dev     <none>

-- no debconf information