gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libc/src/__support/ctype_utils.h",
    "//libc/src/__support/integer_to_string.h",
    "//libc/src/ctype/CMakeLists.txt",
    "//libc/src/ctype/isalnum.cpp",
    "//libc/src/ctype/isalnum_l.cpp",
    "//libc/src/ctype/isalpha.cpp",
    "//libc/src/ctype/isalpha_l.cpp",
    "//libc/src/ctype/isdigit.cpp",
    "//libc/src/ctype/isdigit_l.cpp",
    "//libc/src/ctype/isgraph.cpp",
    "//libc/src/ctype/isgraph_l.cpp",
    "//libc/src/ctype/islower.cpp",
    "//libc/src/ctype/islower_l.cpp",
    "//libc/src/ctype/ispunct.cpp",
    "//libc/src/ctype/ispunct_l.cpp",
    "//libc/src/ctype/isspace.cpp",
    "//libc/src/ctype/isspace_l.cpp",
    "//libc/src/ctype/isupper.cpp",
    "//libc/src/ctype/isupper_l.cpp",
    "//libc/src/ctype/isxdigit.cpp",
    "//libc/src/ctype/isxdigit_l.cpp",
    "//libc/src/ctype/tolower.cpp",
    "//libc/src/ctype/tolower_l.cpp",
    "//libc/src/ctype/toupper.cpp",
    "//libc/src/ctype/toupper_l.cpp",
    "//libc/src/stdio/printf_core/float_dec_converter_limited.h",
    "//libc/src/stdio/printf_core/float_hex_converter.h",
    "//libc/src/stdlib/l64a.cpp",
    "//libc/src/string/strcasestr.cpp",
    "//libc/src/strings/strcasecmp.cpp",
    "//libc/src/strings/strcasecmp_l.cpp",
    "//libc/src/strings/strncasecmp.cpp",
    "//libc/src/strings/strncasecmp_l.cpp",
    "//libc/test/UnitTest/MemoryMatcher.cpp",
    "//libc/test/src/ctype/islower_test.cpp",
    "//libc/test/src/stdlib/StrtolTest.h",
    "//utils/bazel/llvm-project-overlay/libc/BUILD.bazel"
  ],
  "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