message: try g++-9 for coverage
diff: @@ -76,20 +76,20 @@ matrix:
  - SANITIZER=true
  - CXX_STANDARD=17
  - - name: "coverage build, g++-8"
  + - name: "coverage build, g++-9"
  if: branch = main
  env:
  - ARCH=amd64
  #compiler
  - - CXX=g++-8
  - - CC=gcc-8
  + - CXX=g++-9
  + - CC=gcc-9
  #build settings
  - build_type=Debug
  - - CXXFLAGS="-O0 --coverage"
  + - CXXFLAGS="-O0 -fno-inline --coverage"
  - CXX_STANDARD=17
  addons:
  apt:
  - packages: ['gcc-8', 'g++-8', 'lcov', 'cmake']
  + packages: ['gcc-9', 'g++-9', 'lcov', 'cmake']
  script:
  - ./scripts/travis-build.sh
  - ./scripts/travis-after-success.sh
  