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| from __future__ import absolute_import
from __future__ import print_function
# System modules
from distutils.version import LooseVersion
from functools import wraps
import os
import platform
import re
import sys
import tempfile
import subprocess
# Third-party modules
import six
import unittest2
# LLDB modules
import lldb
from . import configuration
from . import test_categories
from . import lldbtest_config
from lldbsuite.test_event.event_builder import EventBuilder
from lldbsuite.support import funcutils
from lldbsuite.test import lldbplatform
from lldbsuite.test import lldbplatformutil
class DecorateMode:
Skip, Xfail = range(2)
# You can use no_match to reverse the test of the conditional that is used to match keyword
# arguments in the skip / xfail decorators. If oslist=["windows", "linux"] skips windows
# and linux, oslist=no_match(["windows", "linux"]) skips *unless* windows
# or linux.
class no_match:
def __init__(self, item):
self.item = item
def _check_expected_version(comparison, expected, actual):
def fn_leq(x, y): return x <= y
def fn_less(x, y): return x < y
def fn_geq(x, y): return x >= y
def fn_greater(x, y): return x > y
def fn_eq(x, y): return x == y
def fn_neq(x, y): return x != y
op_lookup = {
"==": fn_eq,
"=": fn_eq,
"!=": fn_neq,
"<>": fn_neq,
">": fn_greater,
"<": fn_less,
">=": fn_geq,
"<=": fn_leq
}
expected_str = '.'.join([str(x) for x in expected])
actual_str = '.'.join([str(x) for x in actual])
return op_lookup[comparison](
LooseVersion(actual_str),
LooseVersion(expected_str))
_re_pattern_type = type(re.compile(''))
def _match_decorator_property(expected, actual):
if actual is None or expected is None:
return True
if isinstance(expected, no_match):
return not _match_decorator_property(expected.item, actual)
elif isinstance(expected, (_re_pattern_type,) + six.string_types):
return re.search(expected, actual) is not None
elif hasattr(expected, "__iter__"):
return any([x is not None and _match_decorator_property(x, actual)
for x in expected])
else:
return expected == actual
def expectedFailure(expected_fn, bugnumber=None):
def expectedFailure_impl(func):
if isinstance(func, type) and issubclass(func, unittest2.TestCase):
raise Exception(
"Decorator can only be used to decorate a test method")
@wraps(func)
def wrapper(*args, **kwargs):
self = args[0]
if funcutils.requires_self(expected_fn):
xfail_reason = expected_fn(self)
else:
xfail_reason = expected_fn()
if xfail_reason is not None:
if configuration.results_formatter_object is not None:
# Mark this test as expected to fail.
configuration.results_formatter_object.handle_event(
EventBuilder.event_for_mark_test_expected_failure(self))
xfail_func = unittest2.expectedFailure(func)
xfail_func(*args, **kwargs)
else:
func(*args, **kwargs)
return wrapper
# Some decorators can be called both with no arguments (e.g. @expectedFailureWindows)
# or with arguments (e.g. @expectedFailureWindows(compilers=['gcc'])). When called
# the first way, the first argument will be the actual function because decorators are
# weird like that. So this is basically a check that says "which syntax was the original
# function decorated with?"
if six.callable(bugnumber):
return expectedFailure_impl(bugnumber)
else:
return expectedFailure_impl
def skipTestIfFn(expected_fn, bugnumber=None):
def skipTestIfFn_impl(func):
if isinstance(func, type) and issubclass(func, unittest2.TestCase):
raise Exception(
"@skipTestIfFn can only be used to decorate a test method")
@wraps(func)
def wrapper(*args, **kwargs):
self = args[0]
if funcutils.requires_self(expected_fn):
reason = expected_fn(self)
else:
reason = expected_fn()
if reason is not None:
self.skipTest(reason)
else:
func(*args, **kwargs)
return wrapper
# Some decorators can be called both with no arguments (e.g. @expectedFailureWindows)
# or with arguments (e.g. @expectedFailureWindows(compilers=['gcc'])). When called
# the first way, the first argument will be the actual function because decorators are
# weird like that. So this is basically a check that says "how was the
# decorator used"
if six.callable(bugnumber):
return skipTestIfFn_impl(bugnumber)
else:
return skipTestIfFn_impl
def _decorateTest(mode,
bugnumber=None, oslist=None, hostoslist=None,
compiler=None, compiler_version=None,
archs=None, triple=None,
debug_info=None,
swig_version=None, py_version=None,
macos_version=None,
remote=None, dwarf_version=None):
def fn(self):
skip_for_os = _match_decorator_property(
lldbplatform.translate(oslist), self.getPlatform())
skip_for_hostos = _match_decorator_property(
lldbplatform.translate(hostoslist),
lldbplatformutil.getHostPlatform())
skip_for_compiler = _match_decorator_property(
compiler, self.getCompiler()) and self.expectedCompilerVersion(compiler_version)
skip_for_arch = _match_decorator_property(
archs, self.getArchitecture())
skip_for_debug_info = _match_decorator_property(
debug_info, self.getDebugInfo())
skip_for_triple = _match_decorator_property(
triple, lldb.DBG.GetSelectedPlatform().GetTriple())
skip_for_remote = _match_decorator_property(
remote, lldb.remote_platform is not None)
skip_for_swig_version = (
swig_version is None) or (
not hasattr(
lldb,
'swig_version')) or (
_check_expected_version(
swig_version[0],
swig_version[1],
lldb.swig_version))
skip_for_py_version = (
py_version is None) or _check_expected_version(
py_version[0], py_version[1], sys.version_info)
skip_for_macos_version = (macos_version is None) or (
(platform.mac_ver()[0] != "") and (_check_expected_version(
macos_version[0],
macos_version[1],
platform.mac_ver()[0])))
skip_for_dwarf_version = (dwarf_version is None) or (
_check_expected_version(dwarf_version[0], dwarf_version[1],
self.getDwarfVersion()))
# For the test to be skipped, all specified (e.g. not None) parameters must be True.
# An unspecified parameter means "any", so those are marked skip by default. And we skip
# the final test if all conditions are True.
conditions = [(oslist, skip_for_os, "target o/s"),
(hostoslist, skip_for_hostos, "host o/s"),
(compiler, skip_for_compiler, "compiler or version"),
(archs, skip_for_arch, "architecture"),
(debug_info, skip_for_debug_info, "debug info format"),
(triple, skip_for_triple, "target triple"),
(swig_version, skip_for_swig_version, "swig version"),
(py_version, skip_for_py_version, "python version"),
(macos_version, skip_for_macos_version, "macOS version"),
(remote, skip_for_remote, "platform locality (remote/local)"),
(dwarf_version, skip_for_dwarf_version, "dwarf version")]
reasons = []
final_skip_result = True
for this_condition in conditions:
final_skip_result = final_skip_result and this_condition[1]
if this_condition[0] is not None and this_condition[1]:
reasons.append(this_condition[2])
reason_str = None
if final_skip_result:
mode_str = {
DecorateMode.Skip: "skipping",
DecorateMode.Xfail: "xfailing"}[mode]
if len(reasons) > 0:
reason_str = ",".join(reasons)
reason_str = "{} due to the following parameter(s): {}".format(
mode_str, reason_str)
else:
reason_str = "{} unconditionally"
if bugnumber is not None and not six.callable(bugnumber):
reason_str = reason_str + " [" + str(bugnumber) + "]"
return reason_str
if mode == DecorateMode.Skip:
return skipTestIfFn(fn, bugnumber)
elif mode == DecorateMode.Xfail:
return expectedFailure(fn, bugnumber)
else:
return None
# provide a function to xfail on defined oslist, compiler version, and archs
# if none is specified for any argument, that argument won't be checked and thus means for all
# for example,
# @expectedFailureAll, xfail for all platform/compiler/arch,
# @expectedFailureAll(compiler='gcc'), xfail for gcc on all platform/architecture
# @expectedFailureAll(bugnumber, ["linux"], "gcc", ['>=', '4.9'], ['i386']), xfail for gcc>=4.9 on linux with i386
def expectedFailureAll(bugnumber=None,
oslist=None, hostoslist=None,
compiler=None, compiler_version=None,
archs=None, triple=None,
debug_info=None,
swig_version=None, py_version=None,
macos_version=None,
remote=None, dwarf_version=None):
return _decorateTest(DecorateMode.Xfail,
bugnumber=bugnumber,
oslist=oslist, hostoslist=hostoslist,
compiler=compiler, compiler_version=compiler_version,
archs=archs, triple=triple,
debug_info=debug_info,
swig_version=swig_version, py_version=py_version,
macos_version=None,
remote=remote,dwarf_version=dwarf_version)
# provide a function to skip on defined oslist, compiler version, and archs
# if none is specified for any argument, that argument won't be checked and thus means for all
# for example,
# @skipIf, skip for all platform/compiler/arch,
# @skipIf(compiler='gcc'), skip for gcc on all platform/architecture
# @skipIf(bugnumber, ["linux"], "gcc", ['>=', '4.9'], ['i386']), skip for gcc>=4.9 on linux with i386
def skipIf(bugnumber=None,
oslist=None, hostoslist=None,
compiler=None, compiler_version=None,
archs=None, triple=None,
debug_info=None,
swig_version=None, py_version=None,
macos_version=None,
remote=None, dwarf_version=None):
return _decorateTest(DecorateMode.Skip,
bugnumber=bugnumber,
oslist=oslist, hostoslist=hostoslist,
compiler=compiler, compiler_version=compiler_version,
archs=archs, triple=triple,
debug_info=debug_info,
swig_version=swig_version, py_version=py_version,
macos_version=macos_version,
remote=remote, dwarf_version=dwarf_version)
def _skip_for_android(reason, api_levels, archs):
def impl(obj):
result = lldbplatformutil.match_android_device(
obj.getArchitecture(), valid_archs=archs, valid_api_levels=api_levels)
return reason if result else None
return impl
def add_test_categories(cat):
"""Add test categories to a TestCase method"""
cat = test_categories.validate(cat, True)
def impl(func):
if isinstance(func, type) and issubclass(func, unittest2.TestCase):
raise Exception(
"@add_test_categories can only be used to decorate a test method")
try:
if hasattr(func, "categories"):
cat.extend(func.categories)
setattr(func, "categories", cat)
except AttributeError:
raise Exception('Cannot assign categories to inline tests.')
return func
return impl
def benchmarks_test(func):
"""Decorate the item as a benchmarks test."""
def should_skip_benchmarks_test():
return "benchmarks test"
# Mark this function as such to separate them from the regular tests.
result = skipTestIfFn(should_skip_benchmarks_test)(func)
result.__benchmarks_test__ = True
return result
def no_debug_info_test(func):
"""Decorate the item as a test what don't use any debug info. If this annotation is specified
then the test runner won't generate a separate test for each debug info format. """
if isinstance(func, type) and issubclass(func, unittest2.TestCase):
raise Exception(
"@no_debug_info_test can only be used to decorate a test method")
@wraps(func)
def wrapper(self, *args, **kwargs):
return func(self, *args, **kwargs)
# Mark this function as such to separate them from the regular tests.
wrapper.__no_debug_info_test__ = True
return wrapper
def apple_simulator_test(platform):
"""
Decorate the test as a test requiring a simulator for a specific platform.
Consider that a simulator is available if you have the corresponding SDK installed.
The SDK identifiers for simulators are iphonesimulator, appletvsimulator, watchsimulator
"""
def should_skip_simulator_test():
if lldbplatformutil.getHostPlatform() != 'darwin':
return "simulator tests are run only on darwin hosts"
try:
DEVNULL = open(os.devnull, 'w')
output = subprocess.check_output(["xcodebuild", "-showsdks"], stderr=DEVNULL).decode("utf-8")
if re.search('%ssimulator' % platform, output):
return None
else:
return "%s simulator is not supported on this system." % platform
except subprocess.CalledProcessError:
return "%s is not supported on this system (xcodebuild failed)." % feature
return skipTestIfFn(should_skip_simulator_test)
def debugserver_test(func):
"""Decorate the item as a debugserver test."""
def should_skip_debugserver_test():
return "debugserver tests" if configuration.dont_do_debugserver_test else None
return skipTestIfFn(should_skip_debugserver_test)(func)
def llgs_test(func):
"""Decorate the item as a lldb-server test."""
def should_skip_llgs_tests():
return "llgs tests" if configuration.dont_do_llgs_test else None
return skipTestIfFn(should_skip_llgs_tests)(func)
def not_remote_testsuite_ready(func):
"""Decorate the item as a test which is not ready yet for remote testsuite."""
def is_remote():
return "Not ready for remote testsuite" if lldb.remote_platform else None
return skipTestIfFn(is_remote)(func)
def expectedFailureOS(
oslist,
bugnumber=None,
compilers=None,
debug_info=None,
archs=None):
return expectedFailureAll(
oslist=oslist,
bugnumber=bugnumber,
compiler=compilers,
archs=archs,
debug_info=debug_info)
def expectedFailureDarwin(bugnumber=None, compilers=None, debug_info=None):
# For legacy reasons, we support both "darwin" and "macosx" as OS X
# triples.
return expectedFailureOS(
lldbplatform.darwin_all,
bugnumber,
compilers,
debug_info=debug_info)
def expectedFailureAndroid(bugnumber=None, api_levels=None, archs=None):
""" Mark a test as xfail for Android.
Arguments:
bugnumber - The LLVM pr associated with the problem.
api_levels - A sequence of numbers specifying the Android API levels
for which a test is expected to fail. None means all API level.
arch - A sequence of architecture names specifying the architectures
for which a test is expected to fail. None means all architectures.
"""
return expectedFailure(
_skip_for_android(
"xfailing on android",
api_levels,
archs),
bugnumber)
def expectedFailureNetBSD(bugnumber=None):
return expectedFailureOS(
['netbsd'],
bugnumber)
# Flakey tests get two chances to run. If they fail the first time round, the result formatter
# makes sure it is run one more time.
def expectedFlakey(expected_fn, bugnumber=None):
def expectedFailure_impl(func):
@wraps(func)
def wrapper(*args, **kwargs):
self = args[0]
if expected_fn(self):
# Send event marking test as explicitly eligible for rerunning.
if configuration.results_formatter_object is not None:
# Mark this test as rerunnable.
configuration.results_formatter_object.handle_event(
EventBuilder.event_for_mark_test_rerun_eligible(self))
func(*args, **kwargs)
return wrapper
# Some decorators can be called both with no arguments (e.g. @expectedFailureWindows)
# or with arguments (e.g. @expectedFailureWindows(compilers=['gcc'])). When called
# the first way, the first argument will be the actual function because decorators are
# weird like that. So this is basically a check that says "which syntax was the original
# function decorated with?"
if six.callable(bugnumber):
return expectedFailure_impl(bugnumber)
else:
return expectedFailure_impl
def expectedFlakeyOS(oslist, bugnumber=None, compilers=None):
def fn(self):
return (self.getPlatform() in oslist and
self.expectedCompiler(compilers))
return expectedFlakey(fn, bugnumber)
def expectedFlakeyDarwin(bugnumber=None, compilers=None):
# For legacy reasons, we support both "darwin" and "macosx" as OS X
# triples.
return expectedFlakeyOS(
lldbplatformutil.getDarwinOSTriples(),
bugnumber,
compilers)
def expectedFlakeyFreeBSD(bugnumber=None, compilers=None):
return expectedFlakeyOS(['freebsd'], bugnumber, compilers)
def expectedFlakeyLinux(bugnumber=None, compilers=None):
return expectedFlakeyOS(['linux'], bugnumber, compilers)
def expectedFlakeyNetBSD(bugnumber=None, compilers=None):
return expectedFlakeyOS(['netbsd'], bugnumber, compilers)
def expectedFlakeyAndroid(bugnumber=None, api_levels=None, archs=None):
return expectedFlakey(
_skip_for_android(
"flakey on android",
api_levels,
archs),
bugnumber)
def skipIfOutOfTreeDebugserver(func):
"""Decorate the item to skip tests if using an out-of-tree debugserver."""
def is_out_of_tree_debugserver():
return "out-of-tree debugserver" if lldbtest_config.out_of_tree_debugserver else None
return skipTestIfFn(is_out_of_tree_debugserver)(func)
def skipIfRemote(func):
"""Decorate the item to skip tests if testing remotely."""
def is_remote():
return "skip on remote platform" if lldb.remote_platform else None
return skipTestIfFn(is_remote)(func)
def skipIfNoSBHeaders(func):
"""Decorate the item to mark tests that should be skipped when LLDB is built with no SB API headers."""
def are_sb_headers_missing():
if lldbplatformutil.getHostPlatform() == 'darwin':
header = os.path.join(
os.environ["LLDB_LIB_DIR"],
'LLDB.framework',
'Versions',
'Current',
'Headers',
'LLDB.h')
if os.path.exists(header):
return None
header = os.path.join(
os.environ["LLDB_SRC"],
"include",
"lldb",
"API",
"LLDB.h")
if not os.path.exists(header):
return "skip because LLDB.h header not found"
return None
return skipTestIfFn(are_sb_headers_missing)(func)
def skipIfiOSSimulator(func):
"""Decorate the item to skip tests that should be skipped on the iOS Simulator."""
def is_ios_simulator():
return "skip on the iOS Simulator" if configuration.lldb_platform_name == 'ios-simulator' else None
return skipTestIfFn(is_ios_simulator)(func)
def skipIfiOS(func):
return skipIfPlatform(["ios"])(func)
def skipIftvOS(func):
return skipIfPlatform(["tvos"])(func)
def skipIfwatchOS(func):
return skipIfPlatform(["watchos"])(func)
def skipIfbridgeOS(func):
return skipIfPlatform(["bridgeos"])(func)
def skipIfDarwinEmbedded(func):
"""Decorate the item to skip tests that should be skipped on Darwin armv7/arm64 targets."""
return skipIfPlatform(
lldbplatform.translate(
lldbplatform.darwin_embedded))(func)
def skipIfFreeBSD(func):
"""Decorate the item to skip tests that should be skipped on FreeBSD."""
return skipIfPlatform(["freebsd"])(func)
def skipIfNetBSD(func):
"""Decorate the item to skip tests that should be skipped on NetBSD."""
return skipIfPlatform(["netbsd"])(func)
def skipIfDarwin(func):
"""Decorate the item to skip tests that should be skipped on Darwin."""
return skipIfPlatform(
lldbplatform.translate(
lldbplatform.darwin_all))(func)
def skipIfLinux(func):
"""Decorate the item to skip tests that should be skipped on Linux."""
return skipIfPlatform(["linux"])(func)
def skipIfWindows(func):
"""Decorate the item to skip tests that should be skipped on Windows."""
return skipIfPlatform(["windows"])(func)
def skipUnlessWindows(func):
"""Decorate the item to skip tests that should be skipped on any non-Windows platform."""
return skipUnlessPlatform(["windows"])(func)
def skipUnlessDarwin(func):
"""Decorate the item to skip tests that should be skipped on any non Darwin platform."""
return skipUnlessPlatform(lldbplatformutil.getDarwinOSTriples())(func)
def skipUnlessTargetAndroid(func):
return unittest2.skipUnless(lldbplatformutil.target_is_android(),
"requires target to be Android")(func)
def skipIfHostIncompatibleWithRemote(func):
"""Decorate the item to skip tests if binaries built on this host are incompatible."""
def is_host_incompatible_with_remote(self):
host_arch = self.getLldbArchitecture()
host_platform = lldbplatformutil.getHostPlatform()
target_arch = self.getArchitecture()
target_platform = 'darwin' if self.platformIsDarwin() else self.getPlatform()
if not (target_arch == 'x86_64' and host_arch ==
'i386') and host_arch != target_arch:
return "skipping because target %s is not compatible with host architecture %s" % (
target_arch, host_arch)
if target_platform != host_platform:
return "skipping because target is %s but host is %s" % (
target_platform, host_platform)
if lldbplatformutil.match_android_device(target_arch):
return "skipping because target is android"
return None
return skipTestIfFn(is_host_incompatible_with_remote)(func)
def skipIfPlatform(oslist):
"""Decorate the item to skip tests if running on one of the listed platforms."""
# This decorator cannot be ported to `skipIf` yet because it is used on entire
# classes, which `skipIf` explicitly forbids.
return unittest2.skipIf(lldbplatformutil.getPlatform() in oslist,
"skip on %s" % (", ".join(oslist)))
def skipUnlessPlatform(oslist):
"""Decorate the item to skip tests unless running on one of the listed platforms."""
# This decorator cannot be ported to `skipIf` yet because it is used on entire
# classes, which `skipIf` explicitly forbids.
return unittest2.skipUnless(lldbplatformutil.getPlatform() in oslist,
"requires one of %s" % (", ".join(oslist)))
def skipUnlessArch(arch):
"""Decorate the item to skip tests unless running on the specified architecture."""
def arch_doesnt_match(self):
target_arch = self.getArchitecture()
if arch != target_arch:
return "Test only runs on " + arch + ", but target arch is " + target_arch
return None
return skipTestIfFn(arch_doesnt_match)
def skipIfTargetAndroid(bugnumber=None, api_levels=None, archs=None):
"""Decorator to skip tests when the target is Android.
Arguments:
api_levels - The API levels for which the test should be skipped. If
it is None, then the test will be skipped for all API levels.
arch - A sequence of architecture names specifying the architectures
for which a test is skipped. None means all architectures.
"""
return skipTestIfFn(
_skip_for_android(
"skipping for android",
api_levels,
archs),
bugnumber)
def skipUnlessSupportedTypeAttribute(attr):
"""Decorate the item to skip test unless Clang supports type __attribute__(attr)."""
def compiler_doesnt_support_struct_attribute(self):
compiler_path = self.getCompiler()
f = tempfile.NamedTemporaryFile()
cmd = [self.getCompiler(), "-x", "c++", "-c", "-o", f.name, "-"]
p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
stdout, stderr = p.communicate('struct __attribute__((%s)) Test {};'%attr)
if attr in stderr:
return "Compiler does not support attribute %s"%(attr)
return None
return skipTestIfFn(compiler_doesnt_support_struct_attribute)
def skipUnlessHasCallSiteInfo(func):
"""Decorate the function to skip testing unless call site info from clang is available."""
def is_compiler_clang_with_call_site_info(self):
compiler_path = self.getCompiler()
compiler = os.path.basename(compiler_path)
if not compiler.startswith("clang"):
return "Test requires clang as compiler"
f = tempfile.NamedTemporaryFile()
cmd = "echo 'int main() {}' | " \
"%s -g -glldb -O1 -Xclang -femit-debug-entry-values -S -emit-llvm -x c -o %s -" % (compiler_path, f.name)
if os.popen(cmd).close() is not None:
return "Compiler can't compile with call site info enabled"
with open(f.name, 'r') as ir_output_file:
buf = ir_output_file.read()
if 'DIFlagAllCallsDescribed' not in buf:
return "Compiler did not introduce DIFlagAllCallsDescribed IR flag"
return None
return skipTestIfFn(is_compiler_clang_with_call_site_info)(func)
def skipUnlessThreadSanitizer(func):
"""Decorate the item to skip test unless Clang -fsanitize=thread is supported."""
def is_compiler_clang_with_thread_sanitizer(self):
compiler_path = self.getCompiler()
compiler = os.path.basename(compiler_path)
if not compiler.startswith("clang"):
return "Test requires clang as compiler"
if lldbplatformutil.getPlatform() == 'windows':
return "TSAN tests not compatible with 'windows'"
# rdar://28659145 - TSAN tests don't look like they're supported on i386
if self.getArchitecture() == 'i386' and platform.system() == 'Darwin':
return "TSAN tests not compatible with i386 targets"
f = tempfile.NamedTemporaryFile()
cmd = "echo 'int main() {}' | %s -x c -o %s -" % (compiler_path, f.name)
if os.popen(cmd).close() is not None:
return None # The compiler cannot compile at all, let's *not* skip the test
cmd = "echo 'int main() {}' | %s -fsanitize=thread -x c -o %s -" % (compiler_path, f.name)
if os.popen(cmd).close() is not None:
return "Compiler cannot compile with -fsanitize=thread"
return None
return skipTestIfFn(is_compiler_clang_with_thread_sanitizer)(func)
def skipUnlessUndefinedBehaviorSanitizer(func):
"""Decorate the item to skip test unless -fsanitize=undefined is supported."""
def is_compiler_clang_with_ubsan(self):
# Write out a temp file which exhibits UB.
inputf = tempfile.NamedTemporaryFile(suffix='.c', mode='w')
inputf.write('int main() { int x = 0; return x / x; }\n')
inputf.flush()
# We need to write out the object into a named temp file for inspection.
outputf = tempfile.NamedTemporaryFile()
# Try to compile with ubsan turned on.
cmd = '%s -fsanitize=undefined %s -o %s' % (self.getCompiler(), inputf.name, outputf.name)
if os.popen(cmd).close() is not None:
return "Compiler cannot compile with -fsanitize=undefined"
# Check that we actually see ubsan instrumentation in the binary.
cmd = 'nm %s' % outputf.name
with os.popen(cmd) as nm_output:
if '___ubsan_handle_divrem_overflow' not in nm_output.read():
return "Division by zero instrumentation is missing"
# Find the ubsan dylib.
# FIXME: This check should go away once compiler-rt gains support for __ubsan_on_report.
cmd = '%s -fsanitize=undefined -x c - -o - -### 2>&1' % self.getCompiler()
with os.popen(cmd) as cc_output:
driver_jobs = cc_output.read()
m = re.search(r'"([^"]+libclang_rt.ubsan_osx_dynamic.dylib)"', driver_jobs)
if not m:
return "Could not find the ubsan dylib used by the driver"
ubsan_dylib = m.group(1)
# Check that the ubsan dylib has special monitor hooks.
cmd = 'nm -gU %s' % ubsan_dylib
with os.popen(cmd) as nm_output:
syms = nm_output.read()
if '___ubsan_on_report' not in syms:
return "Missing ___ubsan_on_report"
if '___ubsan_get_current_report_data' not in syms:
return "Missing ___ubsan_get_current_report_data"
# OK, this dylib + compiler works for us.
return None
return skipTestIfFn(is_compiler_clang_with_ubsan)(func)
def skipUnlessAddressSanitizer(func):
"""Decorate the item to skip test unless Clang -fsanitize=thread is supported."""
def is_compiler_with_address_sanitizer(self):
compiler_path = self.getCompiler()
compiler = os.path.basename(compiler_path)
f = tempfile.NamedTemporaryFile()
if lldbplatformutil.getPlatform() == 'windows':
return "ASAN tests not compatible with 'windows'"
cmd = "echo 'int main() {}' | %s -x c -o %s -" % (compiler_path, f.name)
if os.popen(cmd).close() is not None:
return None # The compiler cannot compile at all, let's *not* skip the test
cmd = "echo 'int main() {}' | %s -fsanitize=address -x c -o %s -" % (compiler_path, f.name)
if os.popen(cmd).close() is not None:
return "Compiler cannot compile with -fsanitize=address"
return None
return skipTestIfFn(is_compiler_with_address_sanitizer)(func)
def _get_bool_config_skip_if_decorator(key):
config = lldb.SBDebugger.GetBuildConfiguration()
value_node = config.GetValueForKey(key)
fail_value = True # More likely to notice if something goes wrong
have = value_node.GetValueForKey("value").GetBooleanValue(fail_value)
return unittest2.skipIf(not have, "requires " + key)
def skipIfCursesSupportMissing(func):
return _get_bool_config_skip_if_decorator("curses")(func)
def skipIfXmlSupportMissing(func):
return _get_bool_config_skip_if_decorator("xml")(func)
def skipIfLLVMTargetMissing(target):
config = lldb.SBDebugger.GetBuildConfiguration()
targets = config.GetValueForKey("targets").GetValueForKey("value")
found = False
for i in range(targets.GetSize()):
if targets.GetItemAtIndex(i).GetStringValue(99) == target:
found = True
break
return unittest2.skipIf(not found, "requires " + target)
# Call sysctl on darwin to see if a specified hardware feature is available on this machine.
def skipUnlessFeature(feature):
def is_feature_enabled(self):
if platform.system() == 'Darwin':
try:
DEVNULL = open(os.devnull, 'w')
output = subprocess.check_output(["/usr/sbin/sysctl", feature], stderr=DEVNULL).decode("utf-8")
# If 'feature: 1' was output, then this feature is available and
# the test should not be skipped.
if re.match('%s: 1\s*' % feature, output):
return None
else:
return "%s is not supported on this system." % feature
except subprocess.CalledProcessError:
return "%s is not supported on this system." % feature
return skipTestIfFn(is_feature_enabled)
def skipIfAsan(func):
"""Skip this test if the environment is set up to run LLDB itself under ASAN."""
def is_asan():
if ('ASAN_OPTIONS' in os.environ):
return "ASAN unsupported"
return None
return skipTestIfFn(is_asan)(func)
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