message: tests: Switch one of the Travis jobs to an unsigned char environment (-funsigned-char)
diff: @@ -116,14 +116,14 @@ jobs:
  CONFIG_SHELL="/bin/dash"
  - stage: test
  - name: 'x86_64 Linux [GOAL: install] [bionic] [uses qt5 dev package instead of depends Qt to speed up build and avoid timeout]'
  + name: 'x86_64 Linux [GOAL: install] [bionic] [uses qt5 dev package instead of depends Qt to speed up build and avoid timeout] [unsigned char]'
  env: >-
  HOST=x86_64-unknown-linux-gnu
  PACKAGES="python3-zmq qtbase5-dev qttools5-dev-tools protobuf-compiler libdbus-1-dev libharfbuzz-dev libprotobuf-dev"
  DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1 ALLOW_HOST_PACKAGES=1"
  TEST_RUNNER_EXTRA="--coverage --extended --exclude feature_dbcrash" # Run extended tests so that coverage does not fail, but exclude the very slow dbcrash
  GOAL="install"
  - BITCOIN_CONFIG="--enable-zmq --with-gui=qt5 --enable-glibc-back-compat --enable-reduce-exports --enable-debug CXXFLAGS=\"-g0 -O2\""
  + BITCOIN_CONFIG="--enable-zmq --with-gui=qt5 --enable-glibc-back-compat --enable-reduce-exports --enable-debug CFLAGS=\"-g0 -O2 -funsigned-char\" CXXFLAGS=\"-g0 -O2 -funsigned-char\""
  - stage: test
  name: 'x86_64 Linux [GOAL: install] [trusty] [no functional tests, no depends, only system libs]'
  