gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libc/src/__support/GPU/allocator.cpp",
    "//libc/test/src/stdio/CMakeLists.txt",
    "//libc/test/src/stdio/fdopen_test.cpp",
    "//libc/test/src/stdio/fgetc_test.cpp",
    "//libc/test/src/stdio/fgetc_unlocked_test.cpp",
    "//libc/test/src/stdio/fgets_test.cpp",
    "//libc/test/src/stdio/fileop_test.cpp",
    "//libc/test/src/stdio/fopencookie_test.cpp",
    "//libc/test/src/stdio/remove_test.cpp",
    "//libc/test/src/stdio/rename_test.cpp",
    "//libc/test/src/stdio/setvbuf_test.cpp",
    "//libc/test/src/stdio/unlocked_fileop_test.cpp",
    "//libc/test/src/stdlib/StrtolTest.h",
    "//libc/test/src/stdlib/strtold_test.cpp"
  ],
  "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