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# -*- Python -*-
import os
import platform
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
def push_ld_library_path(config, new_path):
new_ld_library_path = os.path.pathsep.join(
(new_path, config.environment['LD_LIBRARY_PATH']))
config.environment['LD_LIBRARY_PATH'] = new_ld_library_path
# Setup config name.
config.name = 'AddressSanitizer' + config.name_suffix
# Setup source root.
config.test_source_root = os.path.dirname(__file__)
# GCC-ASan doesn't link in all the necessary libraries automatically, so
# we have to do it ourselves.
if config.compiler_id == 'GNU':
extra_linkflags = ["-pthread", "-lstdc++"]
else:
extra_linkflags = []
# There is no libdl on FreeBSD.
if config.compiler_id == 'GNU' and config.host_os != 'FreeBSD':
extra_linkflags += ["-ldl"]
# Setup default compiler flags used with -fsanitize=address option.
# FIXME: Review the set of required flags and check if it can be reduced.
target_cflags = [get_required_attr(config, "target_cflags")] + extra_linkflags
target_cxxflags = config.cxx_mode_flags + target_cflags
clang_asan_static_cflags = ["-fsanitize=address",
"-mno-omit-leaf-frame-pointer",
"-fno-omit-frame-pointer",
"-fno-optimize-sibling-calls",
"-g"] + target_cflags
clang_asan_static_cxxflags = config.cxx_mode_flags + clang_asan_static_cflags
if config.asan_dynamic:
clang_asan_cflags = clang_asan_static_cflags + ['-shared-libasan']
clang_asan_cxxflags = clang_asan_static_cxxflags + ['-shared-libasan']
config.available_features.add("asan-dynamic-runtime")
else:
clang_asan_cflags = clang_asan_static_cflags
clang_asan_cxxflags = clang_asan_static_cxxflags
config.available_features.add("asan-static-runtime")
asan_lit_source_dir = get_required_attr(config, "asan_lit_source_dir")
if config.android == "TRUE":
config.available_features.add('android')
clang_wrapper = os.path.join(asan_lit_source_dir,
"android_commands", "android_compile.py") + " "
else:
clang_wrapper = ""
def build_invocation(compile_flags):
return " " + " ".join([clang_wrapper, config.clang] + compile_flags) + " "
config.substitutions.append( ("%clang ", build_invocation(target_cflags)) )
config.substitutions.append( ("%clangxx ", build_invocation(target_cxxflags)) )
config.substitutions.append( ("%clang_asan ", build_invocation(clang_asan_cflags)) )
config.substitutions.append( ("%clangxx_asan ", build_invocation(clang_asan_cxxflags)) )
config.substitutions.append( ("%shared_libasan", "libclang_rt.asan-%s.so" % config.target_arch))
if config.asan_dynamic:
config.substitutions.append( ("%clang_asan_static ", build_invocation(clang_asan_static_cflags)) )
config.substitutions.append( ("%clangxx_asan_static ", build_invocation(clang_asan_static_cxxflags)) )
# Windows-specific tests might also use the clang-cl.exe driver.
if platform.system() == 'Windows':
clang_cl_asan_cxxflags = ["-fsanitize=address",
"-Wno-deprecated-declarations",
"-WX",
"-D_HAS_EXCEPTIONS=0",
"-Zi"] + target_cflags
clang_invocation = build_invocation(clang_cl_asan_cxxflags)
clang_cl_invocation = clang_invocation.replace("clang.exe","clang-cl.exe")
config.substitutions.append( ("%clang_cl_asan ", clang_cl_invocation) )
config.substitutions.append( ("%asan_dll_thunk",
os.path.join(config.compiler_rt_libdir, "clang_rt.asan_dll_thunk-i386.lib")))
# FIXME: De-hardcode this path.
asan_source_dir = os.path.join(
get_required_attr(config, "compiler_rt_src_root"), "lib", "asan")
# Setup path to asan_symbolize.py script.
asan_symbolize = os.path.join(asan_source_dir, "scripts", "asan_symbolize.py")
if not os.path.exists(asan_symbolize):
lit_config.fatal("Can't find script on path %r" % asan_symbolize)
python_exec = get_required_attr(config, "python_executable")
config.substitutions.append( ("%asan_symbolize", python_exec + " " + asan_symbolize + " ") )
# Setup path to sancov.py script.
sanitizer_common_source_dir = os.path.join(
get_required_attr(config, "compiler_rt_src_root"), "lib", "sanitizer_common")
sancov = os.path.join(sanitizer_common_source_dir, "scripts", "sancov.py")
if not os.path.exists(sancov):
lit_config.fatal("Can't find script on path %r" % sancov)
python_exec = get_required_attr(config, "python_executable")
config.substitutions.append( ("%sancov", python_exec + " " + sancov + " ") )
# Determine kernel bitness
if config.host_arch.find('64') != -1 and config.android != "TRUE":
kernel_bits = '64'
else:
kernel_bits = '32'
# Define CHECK-%os to check for OS-dependent output.
config.substitutions.append( ('CHECK-%os', ("CHECK-" + config.host_os)))
config.substitutions.append( ('CHECK-%kernel_bits', ("CHECK-kernel-" + kernel_bits + "-bits")))
config.available_features.add("asan-" + config.bits + "-bits")
# Allow tests to use REQUIRES=stable-runtime. For use when you cannot use XFAIL
# because the test hangs.
if config.target_arch != 'arm':
config.available_features.add('stable-runtime')
# Turn on leak detection on 64-bit Linux.
if config.host_os == 'Linux' and config.bits == '64':
config.environment['ASAN_OPTIONS'] = 'detect_leaks=1'
# Set LD_LIBRARY_PATH to pick dynamic runtime up properly.
push_ld_library_path(config, config.compiler_rt_libdir)
# GCC-ASan uses dynamic runtime by default.
if config.compiler_id == 'GNU':
gcc_dir = os.path.dirname(config.clang)
libasan_dir = os.path.join(gcc_dir, "..", "lib" + config.bits)
push_ld_library_path(config, libasan_dir)
# Default test suffixes.
config.suffixes = ['.c', '.cc', '.cpp']
if config.host_os == 'Darwin':
config.suffixes.append('.mm')
# AddressSanitizer tests are currently supported on Linux and Darwin only.
if config.host_os not in ['Linux', 'Darwin']:
config.unsupported = True
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