gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libcxx/include/__flat_map/flat_map.h",
    "//libcxx/include/__flat_map/flat_multimap.h",
    "//libcxx/include/__flat_set/flat_multiset.h",
    "//libcxx/include/__flat_set/flat_set.h",
    "//libcxx/include/__memory/shared_count.h",
    "//libcxx/include/__mutex/once_flag.h",
    "//libcxx/include/__type_traits/is_allocator.h",
    "//libcxx/include/__vector/vector.h",
    "//libcxx/include/deque",
    "//libcxx/include/forward_list",
    "//libcxx/include/list",
    "//libcxx/include/map",
    "//libcxx/include/module.modulemap.in",
    "//libcxx/include/mutex",
    "//libcxx/include/queue",
    "//libcxx/include/set",
    "//libcxx/include/sstream",
    "//libcxx/include/stack",
    "//libcxx/include/string",
    "//libcxx/include/unordered_map",
    "//libcxx/include/unordered_set",
    "//libcxx/test/libcxx/memory/is_allocator.pass.cpp",
    "//libcxx/test/libcxx/transitive_includes/cxx26.csv"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//compiler-rt/test/hwasan:check-hwasan",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}
running all tests due to change to blacklisted file