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