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This program is free software; you can redistribute it and/or modify

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it under the terms of the GNU General Public License as published by

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the Free Software Foundation; version 2 of the License.

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This program is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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GNU General Public License for more details.

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You should have received a copy of the GNU General Public License

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along with this program; if not, write to the Free Software

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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */

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#ifndef MY_VALGRIND_INCLUDED

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#define MY_VALGRIND_INCLUDED

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/* clang -> gcc */

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#ifndef __has_feature

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# define __has_feature(x) 0

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#endif

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#if __has_feature(address_sanitizer)

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# define __SANITIZE_ADDRESS__ 1

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#endif

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#if __has_feature(memory_sanitizer)

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# include <sanitizer/msan_interface.h>

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# define HAVE_valgrind

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# define HAVE_MEM_CHECK

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# define MEM_UNDEFINED(a,len) __msan_allocated_memory(a,len)

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# define MEM_MAKE_ADDRESSABLE(a,len) MEM_UNDEFINED(a,len)

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# define MEM_MAKE_DEFINED(a,len) __msan_unpoison(a,len)

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# define MEM_NOACCESS(a,len) ((void) 0)

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# define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0)

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# define MEM_CHECK_DEFINED(a,len) __msan_check_mem_is_initialized(a,len)

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# define MEM_GET_VBITS(a,b,len) __msan_copy_shadow(b,a,len)

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# define MEM_SET_VBITS(a,b,len) __msan_copy_shadow(a,b,len)

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# define REDZONE_SIZE 8

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# ifdef __linux__

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# define MSAN_STAT_WORKAROUND(st) MEM_MAKE_DEFINED(st, sizeof(*st))

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# else

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# define MSAN_STAT_WORKAROUND(st) ((void) 0)

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# endif

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#elif defined(HAVE_VALGRIND_MEMCHECK_H) && defined(HAVE_valgrind)

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# include <valgrind/memcheck.h>

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# define HAVE_MEM_CHECK

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# define MEM_UNDEFINED(a,len) VALGRIND_MAKE_MEM_UNDEFINED(a,len)

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# define MEM_MAKE_ADDRESSABLE(a,len) MEM_UNDEFINED(a,len)

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# define MEM_MAKE_DEFINED(a,len) VALGRIND_MAKE_MEM_DEFINED(a,len)

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# define MEM_NOACCESS(a,len) VALGRIND_MAKE_MEM_NOACCESS(a,len)

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# define MEM_CHECK_ADDRESSABLE(a,len) VALGRIND_CHECK_MEM_IS_ADDRESSABLE(a,len)

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# define MEM_CHECK_DEFINED(a,len) VALGRIND_CHECK_MEM_IS_DEFINED(a,len)

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# define MEM_GET_VBITS(a,b,len) VALGRIND_GET_VBITS(a,b,len)

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# define MEM_SET_VBITS(a,b,len) VALGRIND_SET_VBITS(a,b,len)

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# define REDZONE_SIZE 8

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# define MSAN_STAT_WORKAROUND(st) ((void) 0)

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#elif defined(__SANITIZE_ADDRESS__) && (!defined(_MSC_VER) || defined (__clang__))

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# include <sanitizer/asan_interface.h>

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/* How to do manual poisoning:

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https://github.com/google/sanitizers/wiki/AddressSanitizerManualPoisoning */

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# define MEM_UNDEFINED(a,len) ((void) 0)

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# define MEM_MAKE_ADDRESSABLE(a,len) ASAN_UNPOISON_MEMORY_REGION(a,len)

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# define MEM_MAKE_DEFINED(a,len) ((void) 0)

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# define MEM_NOACCESS(a,len) ASAN_POISON_MEMORY_REGION(a,len)

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# define MEM_CHECK_ADDRESSABLE(a,len) \

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assert(!__asan_region_is_poisoned((void*) a,len))

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# define MEM_CHECK_DEFINED(a,len) ((void) 0)

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# define MEM_GET_VBITS(a,b,len) ((void) 0)

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# define MEM_SET_VBITS(a,b,len) ((void) 0)

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# define MSAN_STAT_WORKAROUND(st) ((void) 0)

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# define REDZONE_SIZE 8

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#else

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# define MEM_UNDEFINED(a,len) ((void) 0)

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# define MEM_MAKE_ADDRESSABLE(a,len) ((void) 0)

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# define MEM_MAKE_DEFINED(a,len) ((void) 0)

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# define MEM_NOACCESS(a,len) ((void) 0)

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# define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0)

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# define MEM_CHECK_DEFINED(a,len) ((void) 0)

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# define MEM_GET_VBITS(a,b,len) ((void) 0)

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# define MEM_SET_VBITS(a,b,len) ((void) 0)

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# define REDZONE_SIZE 0

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# define MSAN_STAT_WORKAROUND(st) ((void) 0)

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#endif /* __has_feature(memory_sanitizer) */

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#ifdef TRASH_FREED_MEMORY

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_TRASH_FILL() has to call MEM_MAKE_ADDRESSABLE() to cancel any effect of

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TRASH_FREE().

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This can happen in the case one does

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TRASH_ALLOC(A,B) ; TRASH_FREE(A,B) ; TRASH_ALLOC(A,B)

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to reuse the same memory in an internal memory allocator like MEM_ROOT.

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_TRASH_FILL() is an internal function and should not be used externally.

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#define _TRASH_FILL(A,B,C) do { const size_t trash_tmp= (B); MEM_MAKE_ADDRESSABLE(A, trash_tmp); memset(A, C, trash_tmp); } while (0)

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#else

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#define _TRASH_FILL(A,B,C) do { MEM_UNDEFINED((A), (B)); } while (0)

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#endif

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/** Note that some memory became allocated and/or uninitialized. */

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#define TRASH_ALLOC(A,B) do { _TRASH_FILL(A,B,0xA5); MEM_MAKE_ADDRESSABLE(A,B); } while(0)

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/** Note that some memory became freed. (Prohibit further access to it.) */

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#define TRASH_FREE(A,B) do { _TRASH_FILL(A,B,0x8F); MEM_NOACCESS(A,B); } while(0)

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#endif /* MY_VALGRIND_INCLUDED */

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