message: travis: upgrade to llvm 12
diff: @@ -59,23 +59,23 @@ matrix:
  dist: focal
  addons: *gcc10
  - - env: CMAKE_CXX_COMPILER=clang++-11 CMAKE_BUILD_TYPE=Debug CMAKE_CXX_FLAGS=-fsanitize=address,undefined
  + - env: CMAKE_CXX_COMPILER=clang++-12 CMAKE_BUILD_TYPE=Debug CMAKE_CXX_FLAGS=-fsanitize=address,undefined
  os: linux
  dist: focal
  - addons: &clang11
  + addons: &clang12
  apt:
  sources:
  - sourceline: "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main"
  key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
  packages:
  - *default_packages
  - - clang-11
  + - clang-12
  - g++-10
  - - env: CMAKE_CXX_COMPILER=clang++-11 CMAKE_BUILD_TYPE=Release
  + - env: CMAKE_CXX_COMPILER=clang++-12 CMAKE_BUILD_TYPE=Release
  os: linux
  dist: focal
  - addons: *clang11
  + addons: *clang12
  - env: CMAKE_BUILD_TYPE=Debug CMAKE_CXX_FLAGS=-fsanitize=address,undefined
  os: osx
  