Track origins for memsan runs

Author: deanberris

.travis.yml

@@ -15,7 +15,7 @@ env:
 # Support the sanitizers in clang only
 - BOOST_VER=1.59.0 BUILD_SHARED_LIBS="OFF" CMAKE_BUILD_TYPE="Debug" ENABLE_HTTPS="ON" CMAKE_CXX_FLAGS="-fsanitize=thread"
 - BOOST_VER=1.59.0 BUILD_SHARED_LIBS="OFF" CMAKE_BUILD_TYPE="Debug" ENABLE_HTTPS="ON" CMAKE_CXX_FLAGS="-fsanitize=address"
-- BOOST_VER=1.59.0 BUILD_SHARED_LIBS="OFF" CMAKE_BUILD_TYPE="Debug" ENABLE_HTTPS="ON" CMAKE_CXX_FLAGS="-fsanitize=memory"
+- BOOST_VER=1.59.0 BUILD_SHARED_LIBS="OFF" CMAKE_BUILD_TYPE="Debug" ENABLE_HTTPS="ON" CMAKE_CXX_FLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2"
 matrix:
   exclude:
     - compiler: g++