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import lit.formats
import os
config.name = "cfi" + config.name_suffix
config.suffixes = [".c", ".cpp", ".test"]
config.test_source_root = os.path.dirname(__file__)
def build_invocation(compile_flags):
return " " + " ".join([config.clang] + compile_flags) + " "
clang = build_invocation([config.target_cflags])
clangxx = build_invocation([config.target_cflags] + config.cxx_mode_flags)
config.substitutions.append((r"%clang ", clang + " "))
config.substitutions.append((r"%clangxx ", clangxx + " "))
if "darwin" in config.available_features:
# -fsanitize=cfi is not supported on Darwin hosts
config.unsupported = True
elif config.lto_supported:
clang_cfi = clang + "-fsanitize=cfi "
if config.cfi_lit_test_mode == "Devirt":
config.available_features.add("devirt")
clang_cfi += "-fwhole-program-vtables "
config.substitutions.append((r"%expect_crash_unless_devirt ", ""))
else:
config.substitutions.append(
(r"%expect_crash_unless_devirt ", config.expect_crash)
)
cxx = " ".join(config.cxx_mode_flags) + " "
diag = "-fno-sanitize-trap=cfi -fsanitize-recover=cfi "
non_dso = "-fvisibility=hidden "
dso = "-fsanitize-cfi-cross-dso -fvisibility=default "
if config.android:
dso += "-include " + config.test_source_root + "/cross-dso/util/cfi_stubs.h "
config.substitutions.append((r"%clang_cfi ", clang_cfi + non_dso))
config.substitutions.append((r"%clangxx_cfi ", clang_cfi + cxx + non_dso))
config.substitutions.append((r"%clang_cfi_diag ", clang_cfi + non_dso + diag))
config.substitutions.append(
(r"%clangxx_cfi_diag ", clang_cfi + cxx + non_dso + diag)
)
config.substitutions.append((r"%clangxx_cfi_dso ", clang_cfi + cxx + dso))
config.substitutions.append(
(r"%clangxx_cfi_dso_diag ", clang_cfi + cxx + dso + diag)
)
config.substitutions.append(
(r"%debug_info_flags", " ".join(config.debug_info_flags))
)
else:
config.unsupported = True
if config.default_sanitizer_opts:
config.environment["UBSAN_OPTIONS"] = ":".join(config.default_sanitizer_opts)
if lit_config.params.get("check_supported", None) and config.unsupported:
raise BaseException("Tests unsupported")
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