ClickHouse/cmake/sanitize.cmake
Azat Khuzhin 184efcb77a Get back -fno-sanitize-address-use-after-scope quirk for llvm/clang-15
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
2023-05-09 20:35:43 +02:00

70 lines
3.7 KiB
CMake

# Possible values:
# - `address` (ASan)
# - `memory` (MSan)
# - `thread` (TSan)
# - `undefined` (UBSan)
# - "" (no sanitizing)
option (SANITIZE "Enable one of the code sanitizers" "")
set (SAN_FLAGS "${SAN_FLAGS} -g -fno-omit-frame-pointer -DSANITIZER")
if (SANITIZE)
if (SANITIZE STREQUAL "address")
set (ASAN_FLAGS "-fsanitize=address -fsanitize-address-use-after-scope")
if (COMPILER_CLANG)
if (${CMAKE_CXX_COMPILER_VERSION} VERSION_GREATER_EQUAL 15 AND ${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 16)
# LLVM-15 has a bug in Address Sanitizer, preventing the usage
# of 'sanitize-address-use-after-scope', see [1].
#
# [1]: https://github.com/llvm/llvm-project/issues/58633
set (ASAN_FLAGS "${ASAN_FLAGS} -fno-sanitize-address-use-after-scope")
endif()
endif()
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${ASAN_FLAGS}")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${ASAN_FLAGS}")
elseif (SANITIZE STREQUAL "memory")
# MemorySanitizer flags are set according to the official documentation:
# https://clang.llvm.org/docs/MemorySanitizer.html#usage
# Linking can fail due to relocation overflows (see #49145), caused by too big object files / libraries.
# Work around this with position-independent builds (-fPIC and -fpie), this is slightly slower than non-PIC/PIE but that's okay.
set (MSAN_FLAGS "-fsanitize=memory -fsanitize-memory-use-after-dtor -fsanitize-memory-track-origins -fno-optimize-sibling-calls -fPIC -fpie -fsanitize-blacklist=${CMAKE_SOURCE_DIR}/tests/msan_suppressions.txt")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${MSAN_FLAGS}")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${MSAN_FLAGS}")
elseif (SANITIZE STREQUAL "thread")
set (TSAN_FLAGS "-fsanitize=thread")
if (COMPILER_CLANG)
set (TSAN_FLAGS "${TSAN_FLAGS} -fsanitize-blacklist=${CMAKE_SOURCE_DIR}/tests/tsan_suppressions.txt")
endif()
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${TSAN_FLAGS}")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${TSAN_FLAGS}")
elseif (SANITIZE STREQUAL "undefined")
set (UBSAN_FLAGS "-fsanitize=undefined -fno-sanitize-recover=all -fno-sanitize=float-divide-by-zero")
if (ENABLE_FUZZING)
# Unsigned integer overflow is well defined behaviour from a perspective of C++ standard,
# compilers or CPU. We use in hash functions like SipHash and many other places in our codebase.
# This flag is needed only because fuzzers are run inside oss-fuzz infrastructure
# and they have a bunch of flags not halt the program if UIO happend and even to silence that warnings.
# But for unknown reason that flags don't work with ClickHouse or we don't understand how to properly use them,
# that's why we often receive reports about UIO. The simplest way to avoid this is just set this flag here.
set(UBSAN_FLAGS "${UBSAN_FLAGS} -fno-sanitize=unsigned-integer-overflow")
endif()
if (COMPILER_CLANG)
set (UBSAN_FLAGS "${UBSAN_FLAGS} -fsanitize-blacklist=${CMAKE_SOURCE_DIR}/tests/ubsan_suppressions.txt")
endif()
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${UBSAN_FLAGS}")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${UBSAN_FLAGS}")
# llvm-tblgen, that is used during LLVM build, doesn't work with UBSan.
set (ENABLE_EMBEDDED_COMPILER 0 CACHE BOOL "")
else ()
message (FATAL_ERROR "Unknown sanitizer type: ${SANITIZE}")
endif ()
endif()