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improve ASAN instrumentation: TRASH

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mark freed memory as not accessible, not merely undefined
This commit is contained in:
Sergei Golubchik
2018-01-20 12:50:28 +01:00
parent 22ae3843db
commit a966d422ca
1 changed files with 4 additions and 4 deletions
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8
include/my_valgrind.h
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@@ -39,9 +39,9 @@
#endif /* HAVE_VALGRIND */ #endif /* HAVE_VALGRIND */
#ifndef DBUG_OFF #ifndef DBUG_OFF
#define TRASH_FILL(A,B,C) do { memset(A, C, B); MEM_UNDEFINED(A, B); } while (0) #define TRASH_FILL(A,B,C) do { MEM_UNDEFINED(A,B); memset(A,C,B); } while(0)
#else #else
#define TRASH_FILL(A,B,C) do { MEM_CHECK_ADDRESSABLE(A,B);MEM_UNDEFINED(A,B);} while (0) #define TRASH_FILL(A,B,C) do { MEM_UNDEFINED(A,B); } while(0)
#endif #endif
#define TRASH_ALLOC(A,B) TRASH_FILL(A,B,0xA5) #define TRASH_ALLOC(A,B) do { TRASH_FILL(A,B,0xA5); MEM_UNDEFINED(A,B); } while(0)
#define TRASH_FREE(A,B) TRASH_FILL(A,B,0x8F) #define TRASH_FREE(A,B) do { TRASH_FILL(A,B,0x8F); MEM_NOACCESS(A,B); } while(0)