ClickHouse/cmake/sanitize.cmake

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# Possible values:
# - `address` (ASan)
# - `memory` (MSan)
# - `thread` (TSan)
# - `undefined` (UBSan)
# - "" (no sanitizing)
option (SANITIZE "Enable one of the code sanitizers" "")
set (SAN_FLAGS "${SAN_FLAGS} -g -fno-omit-frame-pointer -DSANITIZER")
# gcc with -nodefaultlibs does not add sanitizer libraries
# with -static-libasan and similar
macro(add_explicit_sanitizer_library lib)
target_link_libraries(global-libs INTERFACE "-Wl,-static -l${lib} -Wl,-Bdynamic")
endmacro()
if (SANITIZE)
if (SANITIZE STREQUAL "address")
set (ASAN_FLAGS "-fsanitize=address -fsanitize-address-use-after-scope")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${ASAN_FLAGS}")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${ASAN_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${ASAN_FLAGS}")
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endif()
if (MAKE_STATIC_LIBRARIES AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libasan")
endif ()
if (COMPILER_GCC)
add_explicit_sanitizer_library(asan)
endif()
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elseif (SANITIZE STREQUAL "memory")
# MemorySanitizer flags are set according to the official documentation:
# https://clang.llvm.org/docs/MemorySanitizer.html#usage
#
# For now, it compiles with `cmake -DSANITIZE=memory -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_CXX_FLAGS_ADD="-O1" -DCMAKE_C_FLAGS_ADD="-O1"`
# Compiling with -DCMAKE_BUILD_TYPE=Debug leads to ld.lld failures because
# of large files (was not tested with ld.gold). This is why we compile with
# RelWithDebInfo, and downgrade optimizations to -O1 but not to -Og, to
# keep the binary size down.
# TODO: try compiling with -Og and with ld.gold.
set (MSAN_FLAGS "-fsanitize=memory -fsanitize-memory-use-after-dtor -fsanitize-memory-track-origins -fno-optimize-sibling-calls -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} ${MSAN_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=memory")
endif()
if (MAKE_STATIC_LIBRARIES AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libmsan")
endif ()
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elseif (SANITIZE STREQUAL "thread")
set (TSAN_FLAGS "-fsanitize=thread")
if (COMPILER_CLANG)
set (TSAN_FLAGS "${TSAN_FLAGS} -fsanitize-blacklist=${CMAKE_SOURCE_DIR}/tests/tsan_suppressions.txt")
else()
set (MESSAGE "TSAN suppressions was not passed to the compiler (since the compiler is not clang)\n")
set (MESSAGE "${MESSAGE}Use the following command to pass them manually:\n")
set (MESSAGE "${MESSAGE} export TSAN_OPTIONS=\"$TSAN_OPTIONS suppressions=${CMAKE_SOURCE_DIR}/tests/tsan_suppressions.txt\"")
message (WARNING "${MESSAGE}")
endif()
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${TSAN_FLAGS}")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${TSAN_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=thread")
endif()
if (MAKE_STATIC_LIBRARIES AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libtsan")
endif ()
if (COMPILER_GCC)
add_explicit_sanitizer_library(tsan)
endif()
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elseif (SANITIZE STREQUAL "undefined")
set (UBSAN_FLAGS "-fsanitize=undefined -fno-sanitize-recover=all -fno-sanitize=float-divide-by-zero")
if (ENABLE_FUZZING)
# Unsigned integer overflow is well defined behaviour from a perspective of C++ standard,
# compilers or CPU. We use in hash functions like SipHash and many other places in our codebase.
# This flag is needed only because fuzzers are run inside oss-fuzz infrastructure
# and they have a bunch of flags not halt the program if UIO happend and even to silence that warnings.
# But for unknown reason that flags don't work with ClickHouse or we don't understand how to properly use them,
# that's why we often receive reports about UIO. The simplest way to avoid this is just set this flag here.
set(UBSAN_FLAGS "${SAN_FLAGS} -fno-sanitize=unsigned-integer-overflow")
endif()
if (COMPILER_CLANG)
set (UBSAN_FLAGS "${UBSAN_FLAGS} -fsanitize-blacklist=${CMAKE_SOURCE_DIR}/tests/ubsan_suppressions.txt")
else()
set (MESSAGE "UBSAN suppressions was not passed to the compiler (since the compiler is not clang)\n")
set (MESSAGE "${MESSAGE}Use the following command to pass them manually:\n")
set (MESSAGE "${MESSAGE} export UBSAN_OPTIONS=\"$UBSAN_OPTIONS suppressions=${CMAKE_SOURCE_DIR}/tests/ubsan_suppressions.txt\"")
message (WARNING "${MESSAGE}")
endif()
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SAN_FLAGS} ${UBSAN_FLAGS}")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SAN_FLAGS} ${UBSAN_FLAGS}")
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if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined")
endif()
if (MAKE_STATIC_LIBRARIES AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libubsan")
endif ()
if (COMPILER_GCC)
add_explicit_sanitizer_library(ubsan)
endif()
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# 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()