Update clang for the Dockerfile used in tsan tests

templates/tools/dockerfile/clang_update.include

+#=================
+# Update clang to a version with improved tsan
+
+RUN apt-get update && apt-get -y install python cmake && apt-get clean
+
+RUN git clone -n -b release_38 http://llvm.org/git/llvm.git && ${'\\'}
+  cd llvm && git checkout ad57503 && cd ..
+RUN git clone -n -b release_38 http://llvm.org/git/clang.git && ${'\\'}
+  cd clang && git checkout ad2c56e && cd ..
+RUN git clone -n -b release_38 http://llvm.org/git/compiler-rt.git && ${'\\'}
+  cd compiler-rt && git checkout 3176922 && cd ..
+RUN git clone -n -b release_38 ${'\\'}
+  http://llvm.org/git/clang-tools-extra.git && cd clang-tools-extra && ${'\\'}
+  git checkout c288525 && cd ..
+RUN git clone -n -b release_38 http://llvm.org/git/libcxx.git && ${'\\'}
+  cd libcxx && git checkout fda3549  && cd ..
+RUN git clone -n -b release_38 http://llvm.org/git/libcxxabi.git && ${'\\'}
+  cd libcxxabi && git checkout 8d4e51d && cd ..
+
+RUN mv clang llvm/tools
+RUN mv compiler-rt llvm/projects
+RUN mv clang-tools-extra llvm/tools/clang/tools
+RUN mv libcxx llvm/projects
+RUN mv libcxxabi llvm/projects
+
+RUN mkdir llvm-build
+RUN cd llvm-build && cmake ${'\\'}
+  -DCMAKE_BUILD_TYPE:STRING=Release ${'\\'}
+  -DCMAKE_INSTALL_PREFIX:STRING=/usr ${'\\'}
+  -DLLVM_TARGETS_TO_BUILD:STRING=X86 ${'\\'}
+  ../llvm
+RUN make -C llvm-build && make -C llvm-build install && rm -rf llvm-build

templates/tools/dockerfile/test/cxx_jessie_x64/Dockerfile.template

@@ -33,7 +33,7 @@
   
   <%include file="../../apt_get_basic.include"/>
   <%include file="../../cxx_deps.include"/>
+  <%include file="../../clang_update.include"/>
   <%include file="../../run_tests_addons.include"/>
   # Define the default command.
   CMD ["bash"]
-  
\ No newline at end of file

tools/dockerfile/test/cxx_jessie_x64/Dockerfile

@@ -67,6 +67,39 @@ RUN apt-get update && apt-get install -y time && apt-get clean
 # C++ dependencies
 RUN apt-get update && apt-get -y install libgflags-dev libgtest-dev libc++-dev clang && apt-get clean
 
+#=================
+# Update clang to a version with improved tsan
+
+RUN apt-get update && apt-get -y install python cmake && apt-get clean
+
+RUN git clone -n -b release_38 http://llvm.org/git/llvm.git && \
+  cd llvm && git checkout ad57503 && cd ..
+RUN git clone -n -b release_38 http://llvm.org/git/clang.git && \
+  cd clang && git checkout ad2c56e && cd ..
+RUN git clone -n -b release_38 http://llvm.org/git/compiler-rt.git && \
+  cd compiler-rt && git checkout 3176922 && cd ..
+RUN git clone -n -b release_38 \
+  http://llvm.org/git/clang-tools-extra.git && cd clang-tools-extra && \
+  git checkout c288525 && cd ..
+RUN git clone -n -b release_38 http://llvm.org/git/libcxx.git && \
+  cd libcxx && git checkout fda3549  && cd ..
+RUN git clone -n -b release_38 http://llvm.org/git/libcxxabi.git && \
+  cd libcxxabi && git checkout 8d4e51d && cd ..
+
+RUN mv clang llvm/tools
+RUN mv compiler-rt llvm/projects
+RUN mv clang-tools-extra llvm/tools/clang/tools
+RUN mv libcxx llvm/projects
+RUN mv libcxxabi llvm/projects
+
+RUN mkdir llvm-build
+RUN cd llvm-build && cmake \
+  -DCMAKE_BUILD_TYPE:STRING=Release \
+  -DCMAKE_INSTALL_PREFIX:STRING=/usr \
+  -DLLVM_TARGETS_TO_BUILD:STRING=X86 \
+  ../llvm
+RUN make -C llvm-build && make -C llvm-build install && rm -rf llvm-build
+
 # Prepare ccache
 RUN ln -s /usr/bin/ccache /usr/local/bin/gcc
 RUN ln -s /usr/bin/ccache /usr/local/bin/g++