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/* Copyright (C) 2010 Monty Program Ab
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* clang -> gcc */
#ifndef __has_feature
# define __has_feature(x) 0
#endif
#if __has_feature(address_sanitizer)
# define __SANITIZE_ADDRESS__ 1
#endif
#ifdef HAVE_valgrind
#define IF_VALGRIND(A,B) A
#else
#define IF_VALGRIND(A,B) B
#endif
#if defined(HAVE_VALGRIND) && defined(HAVE_valgrind)
# include <valgrind/memcheck.h>
# define MEM_UNDEFINED(a,len) VALGRIND_MAKE_MEM_UNDEFINED(a,len)
# define MEM_NOACCESS(a,len) VALGRIND_MAKE_MEM_NOACCESS(a,len)
# define MEM_CHECK_ADDRESSABLE(a,len) VALGRIND_CHECK_MEM_IS_ADDRESSABLE(a,len)
# define MEM_CHECK_DEFINED(a,len) VALGRIND_CHECK_MEM_IS_DEFINED(a,len)
#elif defined(__SANITIZE_ADDRESS__)
# include <sanitizer/asan_interface.h>
/* How to do manual poisoning:
https://github.com/google/sanitizers/wiki/AddressSanitizerManualPoisoning */
# define MEM_UNDEFINED(a,len) ASAN_UNPOISON_MEMORY_REGION(a,len)
# define MEM_NOACCESS(a,len) ASAN_POISON_MEMORY_REGION(a,len)
# define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0)
# define MEM_CHECK_DEFINED(a,len) ((void) 0)
#else
# define MEM_UNDEFINED(a,len) ((void) (a), (void) (len))
# define MEM_NOACCESS(a,len) ((void) 0)
# define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0)
# define MEM_CHECK_DEFINED(a,len) ((void) 0)
#endif /* HAVE_VALGRIND */
#ifndef DBUG_OFF
#define TRASH_FILL(A,B,C) do { const size_t trash_tmp= (B); MEM_UNDEFINED(A, trash_tmp); memset(A, C, trash_tmp); } while (0)
#else
#define TRASH_FILL(A,B,C) do { MEM_UNDEFINED((A), (B)); } while (0)
#endif
#define TRASH_ALLOC(A,B) do { TRASH_FILL(A,B,0xA5); MEM_UNDEFINED(A,B); } while(0)
#define TRASH_FREE(A,B) do { TRASH_FILL(A,B,0x8F); MEM_NOACCESS(A,B); } while(0)
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