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# -*- Python -*-
import os
def get_required_attr(config, attr_name):
attr_value = getattr(config, attr_name, None)
if attr_value == None:
lit_config.fatal(
"No attribute %r in test configuration! You may need to run "
"tests from your build directory or add this attribute "
"to lit.site.cfg " % attr_name)
return attr_value
# Setup source root.
config.test_source_root = os.path.dirname(__file__)
default_ubsan_opts = []
# Choose between standalone and UBSan+ASan modes.
ubsan_lit_test_mode = get_required_attr(config, 'ubsan_lit_test_mode')
if ubsan_lit_test_mode == "Standalone":
config.name = 'UBSan-Standalone-' + config.target_arch
config.available_features.add("ubsan-standalone")
clang_ubsan_cflags = []
elif ubsan_lit_test_mode == "AddressSanitizer":
config.name = 'UBSan-ASan-' + config.target_arch
config.available_features.add("ubsan-asan")
clang_ubsan_cflags = ["-fsanitize=address"]
default_ubsan_opts += ['detect_leaks=0']
elif ubsan_lit_test_mode == "MemorySanitizer":
config.name = 'UBSan-MSan-' + config.target_arch
config.available_features.add("ubsan-msan")
clang_ubsan_cflags = ["-fsanitize=memory"]
elif ubsan_lit_test_mode == "ThreadSanitizer":
config.name = 'UBSan-TSan-' + config.target_arch
config.available_features.add("ubsan-tsan")
clang_ubsan_cflags = ["-fsanitize=thread"]
else:
lit_config.fatal("Unknown UBSan test mode: %r" % ubsan_lit_test_mode)
# Platform-specific default for lit tests.
if config.target_arch == 's390x':
# On SystemZ we need -mbackchain to make the fast unwinder work.
clang_ubsan_cflags.append("-mbackchain")
if config.host_os == 'Darwin':
# On Darwin, we default to `abort_on_error=1`, which would make tests run
# much slower. Let's override this and run lit tests with 'abort_on_error=0'.
default_ubsan_opts += ['abort_on_error=0']
default_ubsan_opts += ['log_to_syslog=0']
default_ubsan_opts_str = ':'.join(default_ubsan_opts)
if default_ubsan_opts_str:
config.environment['UBSAN_OPTIONS'] = default_ubsan_opts_str
default_ubsan_opts_str += ':'
# Substitution to setup UBSAN_OPTIONS in portable way.
config.substitutions.append(('%env_ubsan_opts=',
'env UBSAN_OPTIONS=' + default_ubsan_opts_str))
def build_invocation(compile_flags):
return " " + " ".join([config.clang] + compile_flags) + " "
target_cflags = [get_required_attr(config, "target_cflags")]
clang_ubsan_cflags += target_cflags
clang_ubsan_cxxflags = config.cxx_mode_flags + clang_ubsan_cflags
# Define %clang and %clangxx substitutions to use in test RUN lines.
config.substitutions.append( ("%clang ", build_invocation(clang_ubsan_cflags)) )
config.substitutions.append( ("%clangxx ", build_invocation(clang_ubsan_cxxflags)) )
config.substitutions.append( ("%gmlt ", " ".join(config.debug_info_flags) + " ") )
# Default test suffixes.
config.suffixes = ['.c', '.cc', '.cpp']
# Check that the host supports UndefinedBehaviorSanitizer tests
if config.host_os not in ['Linux', 'Darwin', 'FreeBSD', 'Windows', 'NetBSD']:
config.unsupported = True
# Allow tests to use REQUIRES=stable-runtime. For use when you cannot use XFAIL
# because the test hangs or fails on one configuration and not the other.
if config.target_arch.startswith('arm') == False and config.target_arch != 'aarch64':
config.available_features.add('stable-runtime')
config.available_features.add('arch=' + config.target_arch)
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