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[libcxx] Add support for sanitizers on OS X.

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Summary: This patch adds special configuration logic to find the compiler_rt libraries required by sanitizers on OS X. The supported sanitizers are Address and Undefined.

Reviewers: mclow.lists

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D11381

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@242858 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier 2015-07-22 00:33:36 +00:00
parent 40766f70a4
commit 938c96ef53
3 changed files with 33 additions and 0 deletions
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26
lib/CMakeLists.txt
View File

@ -68,6 +68,32 @@ if (LIBCXX_COVERAGE_LIBRARY)
endif()
target_link_libraries(cxx ${libraries})
if (APPLE AND LLVM_USE_SANITIZER)
if ("${LLVM_USE_SANITIZER}" STREQUAL "Address")
set(LIBFILE "libclang_rt.asan_osx_dynamic.dylib")
elseif("${LLVM_USE_SANITIZER}" STREQUAL "Undefined")
set(LIBFILE "libclang_rt.ubsan_osx_dynamic.dylib")
else()
message(WARNING "LLVM_USE_SANITIZER=${LLVM_USE_SANITIZER} is not supported on OS X")
endif()
if (LIBFILE)
execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=lib OUTPUT_VARIABLE LIBDIR RESULT_VARIABLE Result)
if (NOT ${Result} EQUAL "0")
message(FATAL "Failed to find library resource directory")
endif()
string(STRIP "${LIBDIR}" LIBDIR)
set(LIBDIR "${LIBDIR}/darwin/")
if (NOT IS_DIRECTORY "${LIBDIR}")
message(FATAL_ERROR "Cannot find compiler-rt directory on OS X required for LLVM_USE_SANITIZER")
endif()
set(LIBCXX_SANITIZER_LIBRARY "${LIBDIR}/${LIBFILE}")
set(LIBCXX_SANITIZER_LIBRARY "${LIBCXX_SANITIZER_LIBRARY}" PARENT_SCOPE)
message(STATUS "Manually linking compiler-rt library: ${LIBCXX_SANITIZER_LIBRARY}")
target_link_libraries(cxx "${LIBCXX_SANITIZER_LIBRARY}")
target_link_libraries(cxx "-Wl,-rpath,${LIBDIR}")
endif()
endif()
# Setup flags.
append_if(LIBCXX_COMPILE_FLAGS LIBCXX_HAS_FPIC_FLAG -fPIC)

6
test/libcxx/test/config.py
View File

@ -623,6 +623,8 @@ class Configuration(object):
'-fno-sanitize-recover']
self.cxx.compile_flags += ['-O3']
self.config.available_features.add('ubsan')
if self.target_info.platform() == 'darwin':
self.config.available_features.add('sanitizer-new-delete')
elif san == 'Thread':
self.cxx.flags += ['-fsanitize=thread']
self.config.available_features.add('tsan')
@ -630,6 +632,10 @@ class Configuration(object):
else:
self.lit_config.fatal('unsupported value for '
'use_sanitizer: {0}'.format(san))
san_lib = self.get_lit_conf('sanitizer_library')
if san_lib:
self.cxx.link_flags += [
san_lib, '-Wl,-rpath,%s' % os.path.dirname(san_lib)]
def configure_coverage(self):
self.generate_coverage = self.get_lit_bool('generate_coverage', False)

1
test/lit.site.cfg.in
View File

@ -16,6 +16,7 @@ config.enable_thread_unsafe_c_functions = "@LIBCXX_ENABLE_THREAD_UNSAFE_C_FUNCTI
config.enable_monotonic_clock = "@LIBCXX_ENABLE_MONOTONIC_CLOCK@"
config.cxx_abi = "@LIBCXX_CXX_ABI_LIBNAME@"
config.use_sanitizer = "@LLVM_USE_SANITIZER@"
config.sanitizer_library = "@LIBCXX_SANITIZER_LIBRARY@"
config.abi_library_path = "@LIBCXX_CXX_ABI_LIBRARY_PATH@"
config.configuration_variant = "@LIBCXX_LIT_VARIANT@"
config.target_triple = "@LIBCXX_TARGET_TRIPLE@"