#if MAX_SAVE_STACK > 0
static char *stack_copy;
static ptrdiff_t stack_copy_size;
-#endif
+
+/* Copy to DEST a block of memory from SRC of size SIZE bytes,
+ avoiding any address sanitization. */
+
+static void * ATTRIBUTE_NO_SANITIZE_ADDRESS
+no_sanitize_memcpy (void *dest, void const *src, size_t size)
+{
+ if (! ADDRESS_SANITIZER)
+ return memcpy (dest, src, size);
+ else
+ {
+ size_t i;
+ char *d = dest;
+ char const *s = src;
+ for (i = 0; i < size; i++)
+ d[i] = s[i];
+ return dest;
+ }
+}
+
+#endif /* MAX_SAVE_STACK > 0 */
static Lisp_Object Qconses;
static Lisp_Object Qsymbols;
/* The entry point is lisp_align_malloc which returns blocks of at most
BLOCK_BYTES and guarantees they are aligned on a BLOCK_ALIGN boundary. */
-#if !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
-# define USE_ALIGNED_ALLOC 1
+/* Use aligned_alloc if it or a simple substitute is available.
+ Address sanitization breaks aligned allocation, as of gcc 4.8.2 and
+ clang 3.3 anyway. */
+
+#if ! ADDRESS_SANITIZER
+# if !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
+# define USE_ALIGNED_ALLOC 1
/* Defined in gmalloc.c. */
void *aligned_alloc (size_t, size_t);
-#elif defined HAVE_ALIGNED_ALLOC
-# define USE_ALIGNED_ALLOC 1
-#elif defined HAVE_POSIX_MEMALIGN
-# define USE_ALIGNED_ALLOC 1
+# elif defined HAVE_ALIGNED_ALLOC
+# define USE_ALIGNED_ALLOC 1
+# elif defined HAVE_POSIX_MEMALIGN
+# define USE_ALIGNED_ALLOC 1
static void *
aligned_alloc (size_t alignment, size_t size)
{
void *p;
return posix_memalign (&p, alignment, size) == 0 ? p : 0;
}
+# endif
#endif
/* BLOCK_ALIGN has to be a power of 2. */
/* Mark Lisp objects referenced from the address range START+OFFSET..END
or END+OFFSET..START. */
-static void
+static void ATTRIBUTE_NO_SANITIZE_ADDRESS
mark_memory (void *start, void *end)
-#if defined (__clang__) && defined (__has_feature)
-#if __has_feature(address_sanitizer)
- /* Do not allow -faddress-sanitizer to check this function, since it
- crosses the function stack boundary, and thus would yield many
- false positives. */
- __attribute__((no_address_safety_analysis))
-#endif
-#endif
{
void **pp;
int i;
stack_copy = xrealloc (stack_copy, stack_size);
stack_copy_size = stack_size;
}
- memcpy (stack_copy, stack, stack_size);
+ no_sanitize_memcpy (stack_copy, stack, stack_size);
}
}
#endif /* MAX_SAVE_STACK > 0 */