message: Enable GCC's debug mode for hardening build
diff: @@ -94,7 +94,7 @@ config = [
  'ASAN_OPTIONS=detect_leaks=1',
  ],
  ]],
  - // One extra debug build with static libraries and UBSanitizer.
  + // One extra debug build with static libs, UBSan and hardening flags.
  ['fedora-32', [
  numCores: 4,
  tags: ['docker', 'UBSanitizer'],
  @@ -104,7 +104,7 @@ config = [
  'CAF_SANITIZERS:STRING=address,undefined',
  ],
  extraBuildEnv: [
  - 'CXXFLAGS=-fno-sanitize-recover=undefined',
  + 'CXXFLAGS=-fno-sanitize-recover=undefined -D_GLIBCXX_DEBUG',
  'LDFLAGS=-fno-sanitize-recover=undefined',
  ],
  ]],
  