Add llvm-symbolizer directory to PATH. Needed to get symbolized stack…

… traces from the sanitizers.

.travis.yml

@@ -107,7 +107,7 @@ jobs:
     - stage: test
       env: >-
         HOST=x86_64-unknown-linux-gnu
-        PACKAGES="clang python3-zmq qtbase5-dev qttools5-dev-tools libssl1.0-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.3++-dev libminiupnpc-dev libzmq3-dev libprotobuf-dev protobuf-compiler libqrencode-dev"
+        PACKAGES="clang llvm python3-zmq qtbase5-dev qttools5-dev-tools libssl1.0-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.3++-dev libminiupnpc-dev libzmq3-dev libprotobuf-dev protobuf-compiler libqrencode-dev"
         NO_DEPENDS=1
         GOAL="install"
         BITCOIN_CONFIG="--enable-zmq --with-incompatible-bdb --enable-glibc-back-compat --enable-reduce-exports --with-gui=qt5 CPPFLAGS=-DDEBUG_LOCKORDER --with-sanitizers=integer,undefined CC=clang CXX=clang++"

.travis/test_03_before_install.sh

@@ -7,6 +7,8 @@
 export LC_ALL=C.UTF-8
 
 PATH=$(echo $PATH | tr ':' "\n" | sed '/\/opt\/python/d' | tr "\n" ":" | sed "s|::|:|g")
+# Add llvm-symbolizer directory to PATH. Needed to get symbolized stack traces from the sanitizers.
+PATH=$PATH:/usr/lib/llvm-6.0/bin/
 export PATH
 
 BEGIN_FOLD () {