On Wed, 8 Mar 2017, Jakub Jelinek wrote:
> Hi!
>
> As reported, we were using often completely bogus access sizes for
> atomic builtins, where the access size should be determined purely by their
> _{1,2,4,8,16} suffix, not by whatever type the passed pointer points to,
> pointer conversions are useless.
>
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
Ok.
Richard.
> 2017-03-08 Jakub Jelinek <ja...@redhat.com>
>
> PR sanitizer/79944
> * asan.c (get_mem_refs_of_builtin_call): For BUILT_IN_ATOMIC* and
> BUILT_IN_SYNC*, determine the access type from the size suffix and
> always build a MEM_REF with that type. Handle forgotten
> BUILT_IN_SYNC_FETCH_AND_NAND_16 and BUILT_IN_SYNC_NAND_AND_FETCH_16.
>
> * c-c++-common/asan/pr79944.c: New test.
>
> --- gcc/asan.c.jj 2017-03-06 12:32:28.000000000 +0100
> +++ gcc/asan.c 2017-03-08 12:24:11.151353229 +0100
> @@ -603,218 +603,208 @@ get_mem_refs_of_builtin_call (const gcal
> case BUILT_IN_STRLEN:
> source0 = gimple_call_arg (call, 0);
> len = gimple_call_lhs (call);
> - break ;
> + break;
>
> /* And now the __atomic* and __sync builtins.
> These are handled differently from the classical memory memory
> access builtins above. */
>
> case BUILT_IN_ATOMIC_LOAD_1:
> - case BUILT_IN_ATOMIC_LOAD_2:
> - case BUILT_IN_ATOMIC_LOAD_4:
> - case BUILT_IN_ATOMIC_LOAD_8:
> - case BUILT_IN_ATOMIC_LOAD_16:
> is_store = false;
> - /* fall through. */
> -
> + /* FALLTHRU */
> case BUILT_IN_SYNC_FETCH_AND_ADD_1:
> - case BUILT_IN_SYNC_FETCH_AND_ADD_2:
> - case BUILT_IN_SYNC_FETCH_AND_ADD_4:
> - case BUILT_IN_SYNC_FETCH_AND_ADD_8:
> - case BUILT_IN_SYNC_FETCH_AND_ADD_16:
> -
> case BUILT_IN_SYNC_FETCH_AND_SUB_1:
> - case BUILT_IN_SYNC_FETCH_AND_SUB_2:
> - case BUILT_IN_SYNC_FETCH_AND_SUB_4:
> - case BUILT_IN_SYNC_FETCH_AND_SUB_8:
> - case BUILT_IN_SYNC_FETCH_AND_SUB_16:
> -
> case BUILT_IN_SYNC_FETCH_AND_OR_1:
> - case BUILT_IN_SYNC_FETCH_AND_OR_2:
> - case BUILT_IN_SYNC_FETCH_AND_OR_4:
> - case BUILT_IN_SYNC_FETCH_AND_OR_8:
> - case BUILT_IN_SYNC_FETCH_AND_OR_16:
> -
> case BUILT_IN_SYNC_FETCH_AND_AND_1:
> - case BUILT_IN_SYNC_FETCH_AND_AND_2:
> - case BUILT_IN_SYNC_FETCH_AND_AND_4:
> - case BUILT_IN_SYNC_FETCH_AND_AND_8:
> - case BUILT_IN_SYNC_FETCH_AND_AND_16:
> -
> case BUILT_IN_SYNC_FETCH_AND_XOR_1:
> - case BUILT_IN_SYNC_FETCH_AND_XOR_2:
> - case BUILT_IN_SYNC_FETCH_AND_XOR_4:
> - case BUILT_IN_SYNC_FETCH_AND_XOR_8:
> - case BUILT_IN_SYNC_FETCH_AND_XOR_16:
> -
> case BUILT_IN_SYNC_FETCH_AND_NAND_1:
> - case BUILT_IN_SYNC_FETCH_AND_NAND_2:
> - case BUILT_IN_SYNC_FETCH_AND_NAND_4:
> - case BUILT_IN_SYNC_FETCH_AND_NAND_8:
> -
> case BUILT_IN_SYNC_ADD_AND_FETCH_1:
> - case BUILT_IN_SYNC_ADD_AND_FETCH_2:
> - case BUILT_IN_SYNC_ADD_AND_FETCH_4:
> - case BUILT_IN_SYNC_ADD_AND_FETCH_8:
> - case BUILT_IN_SYNC_ADD_AND_FETCH_16:
> -
> case BUILT_IN_SYNC_SUB_AND_FETCH_1:
> - case BUILT_IN_SYNC_SUB_AND_FETCH_2:
> - case BUILT_IN_SYNC_SUB_AND_FETCH_4:
> - case BUILT_IN_SYNC_SUB_AND_FETCH_8:
> - case BUILT_IN_SYNC_SUB_AND_FETCH_16:
> -
> case BUILT_IN_SYNC_OR_AND_FETCH_1:
> - case BUILT_IN_SYNC_OR_AND_FETCH_2:
> - case BUILT_IN_SYNC_OR_AND_FETCH_4:
> - case BUILT_IN_SYNC_OR_AND_FETCH_8:
> - case BUILT_IN_SYNC_OR_AND_FETCH_16:
> -
> case BUILT_IN_SYNC_AND_AND_FETCH_1:
> - case BUILT_IN_SYNC_AND_AND_FETCH_2:
> - case BUILT_IN_SYNC_AND_AND_FETCH_4:
> - case BUILT_IN_SYNC_AND_AND_FETCH_8:
> - case BUILT_IN_SYNC_AND_AND_FETCH_16:
> -
> case BUILT_IN_SYNC_XOR_AND_FETCH_1:
> - case BUILT_IN_SYNC_XOR_AND_FETCH_2:
> - case BUILT_IN_SYNC_XOR_AND_FETCH_4:
> - case BUILT_IN_SYNC_XOR_AND_FETCH_8:
> - case BUILT_IN_SYNC_XOR_AND_FETCH_16:
> -
> case BUILT_IN_SYNC_NAND_AND_FETCH_1:
> - case BUILT_IN_SYNC_NAND_AND_FETCH_2:
> - case BUILT_IN_SYNC_NAND_AND_FETCH_4:
> - case BUILT_IN_SYNC_NAND_AND_FETCH_8:
> -
> case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_1:
> - case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_2:
> - case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4:
> - case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8:
> - case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_16:
> -
> case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_1:
> - case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_2:
> - case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_4:
> - case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_8:
> - case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_16:
> -
> case BUILT_IN_SYNC_LOCK_TEST_AND_SET_1:
> - case BUILT_IN_SYNC_LOCK_TEST_AND_SET_2:
> - case BUILT_IN_SYNC_LOCK_TEST_AND_SET_4:
> - case BUILT_IN_SYNC_LOCK_TEST_AND_SET_8:
> - case BUILT_IN_SYNC_LOCK_TEST_AND_SET_16:
> -
> case BUILT_IN_SYNC_LOCK_RELEASE_1:
> - case BUILT_IN_SYNC_LOCK_RELEASE_2:
> - case BUILT_IN_SYNC_LOCK_RELEASE_4:
> - case BUILT_IN_SYNC_LOCK_RELEASE_8:
> - case BUILT_IN_SYNC_LOCK_RELEASE_16:
> -
> case BUILT_IN_ATOMIC_EXCHANGE_1:
> - case BUILT_IN_ATOMIC_EXCHANGE_2:
> - case BUILT_IN_ATOMIC_EXCHANGE_4:
> - case BUILT_IN_ATOMIC_EXCHANGE_8:
> - case BUILT_IN_ATOMIC_EXCHANGE_16:
> -
> case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_1:
> - case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_2:
> - case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_4:
> - case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_8:
> - case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_16:
> -
> case BUILT_IN_ATOMIC_STORE_1:
> - case BUILT_IN_ATOMIC_STORE_2:
> - case BUILT_IN_ATOMIC_STORE_4:
> - case BUILT_IN_ATOMIC_STORE_8:
> - case BUILT_IN_ATOMIC_STORE_16:
> -
> case BUILT_IN_ATOMIC_ADD_FETCH_1:
> - case BUILT_IN_ATOMIC_ADD_FETCH_2:
> - case BUILT_IN_ATOMIC_ADD_FETCH_4:
> - case BUILT_IN_ATOMIC_ADD_FETCH_8:
> - case BUILT_IN_ATOMIC_ADD_FETCH_16:
> -
> case BUILT_IN_ATOMIC_SUB_FETCH_1:
> - case BUILT_IN_ATOMIC_SUB_FETCH_2:
> - case BUILT_IN_ATOMIC_SUB_FETCH_4:
> - case BUILT_IN_ATOMIC_SUB_FETCH_8:
> - case BUILT_IN_ATOMIC_SUB_FETCH_16:
> -
> case BUILT_IN_ATOMIC_AND_FETCH_1:
> - case BUILT_IN_ATOMIC_AND_FETCH_2:
> - case BUILT_IN_ATOMIC_AND_FETCH_4:
> - case BUILT_IN_ATOMIC_AND_FETCH_8:
> - case BUILT_IN_ATOMIC_AND_FETCH_16:
> -
> case BUILT_IN_ATOMIC_NAND_FETCH_1:
> - case BUILT_IN_ATOMIC_NAND_FETCH_2:
> - case BUILT_IN_ATOMIC_NAND_FETCH_4:
> - case BUILT_IN_ATOMIC_NAND_FETCH_8:
> - case BUILT_IN_ATOMIC_NAND_FETCH_16:
> -
> case BUILT_IN_ATOMIC_XOR_FETCH_1:
> - case BUILT_IN_ATOMIC_XOR_FETCH_2:
> - case BUILT_IN_ATOMIC_XOR_FETCH_4:
> - case BUILT_IN_ATOMIC_XOR_FETCH_8:
> - case BUILT_IN_ATOMIC_XOR_FETCH_16:
> -
> case BUILT_IN_ATOMIC_OR_FETCH_1:
> - case BUILT_IN_ATOMIC_OR_FETCH_2:
> - case BUILT_IN_ATOMIC_OR_FETCH_4:
> - case BUILT_IN_ATOMIC_OR_FETCH_8:
> - case BUILT_IN_ATOMIC_OR_FETCH_16:
> -
> case BUILT_IN_ATOMIC_FETCH_ADD_1:
> - case BUILT_IN_ATOMIC_FETCH_ADD_2:
> - case BUILT_IN_ATOMIC_FETCH_ADD_4:
> - case BUILT_IN_ATOMIC_FETCH_ADD_8:
> - case BUILT_IN_ATOMIC_FETCH_ADD_16:
> -
> case BUILT_IN_ATOMIC_FETCH_SUB_1:
> - case BUILT_IN_ATOMIC_FETCH_SUB_2:
> - case BUILT_IN_ATOMIC_FETCH_SUB_4:
> - case BUILT_IN_ATOMIC_FETCH_SUB_8:
> - case BUILT_IN_ATOMIC_FETCH_SUB_16:
> -
> case BUILT_IN_ATOMIC_FETCH_AND_1:
> - case BUILT_IN_ATOMIC_FETCH_AND_2:
> - case BUILT_IN_ATOMIC_FETCH_AND_4:
> - case BUILT_IN_ATOMIC_FETCH_AND_8:
> - case BUILT_IN_ATOMIC_FETCH_AND_16:
> -
> case BUILT_IN_ATOMIC_FETCH_NAND_1:
> - case BUILT_IN_ATOMIC_FETCH_NAND_2:
> - case BUILT_IN_ATOMIC_FETCH_NAND_4:
> - case BUILT_IN_ATOMIC_FETCH_NAND_8:
> - case BUILT_IN_ATOMIC_FETCH_NAND_16:
> -
> case BUILT_IN_ATOMIC_FETCH_XOR_1:
> - case BUILT_IN_ATOMIC_FETCH_XOR_2:
> - case BUILT_IN_ATOMIC_FETCH_XOR_4:
> - case BUILT_IN_ATOMIC_FETCH_XOR_8:
> - case BUILT_IN_ATOMIC_FETCH_XOR_16:
> -
> case BUILT_IN_ATOMIC_FETCH_OR_1:
> + access_size = 1;
> + goto do_atomic;
> +
> + case BUILT_IN_ATOMIC_LOAD_2:
> + is_store = false;
> + /* FALLTHRU */
> + case BUILT_IN_SYNC_FETCH_AND_ADD_2:
> + case BUILT_IN_SYNC_FETCH_AND_SUB_2:
> + case BUILT_IN_SYNC_FETCH_AND_OR_2:
> + case BUILT_IN_SYNC_FETCH_AND_AND_2:
> + case BUILT_IN_SYNC_FETCH_AND_XOR_2:
> + case BUILT_IN_SYNC_FETCH_AND_NAND_2:
> + case BUILT_IN_SYNC_ADD_AND_FETCH_2:
> + case BUILT_IN_SYNC_SUB_AND_FETCH_2:
> + case BUILT_IN_SYNC_OR_AND_FETCH_2:
> + case BUILT_IN_SYNC_AND_AND_FETCH_2:
> + case BUILT_IN_SYNC_XOR_AND_FETCH_2:
> + case BUILT_IN_SYNC_NAND_AND_FETCH_2:
> + case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_2:
> + case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_2:
> + case BUILT_IN_SYNC_LOCK_TEST_AND_SET_2:
> + case BUILT_IN_SYNC_LOCK_RELEASE_2:
> + case BUILT_IN_ATOMIC_EXCHANGE_2:
> + case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_2:
> + case BUILT_IN_ATOMIC_STORE_2:
> + case BUILT_IN_ATOMIC_ADD_FETCH_2:
> + case BUILT_IN_ATOMIC_SUB_FETCH_2:
> + case BUILT_IN_ATOMIC_AND_FETCH_2:
> + case BUILT_IN_ATOMIC_NAND_FETCH_2:
> + case BUILT_IN_ATOMIC_XOR_FETCH_2:
> + case BUILT_IN_ATOMIC_OR_FETCH_2:
> + case BUILT_IN_ATOMIC_FETCH_ADD_2:
> + case BUILT_IN_ATOMIC_FETCH_SUB_2:
> + case BUILT_IN_ATOMIC_FETCH_AND_2:
> + case BUILT_IN_ATOMIC_FETCH_NAND_2:
> + case BUILT_IN_ATOMIC_FETCH_XOR_2:
> case BUILT_IN_ATOMIC_FETCH_OR_2:
> + access_size = 2;
> + goto do_atomic;
> +
> + case BUILT_IN_ATOMIC_LOAD_4:
> + is_store = false;
> + /* FALLTHRU */
> + case BUILT_IN_SYNC_FETCH_AND_ADD_4:
> + case BUILT_IN_SYNC_FETCH_AND_SUB_4:
> + case BUILT_IN_SYNC_FETCH_AND_OR_4:
> + case BUILT_IN_SYNC_FETCH_AND_AND_4:
> + case BUILT_IN_SYNC_FETCH_AND_XOR_4:
> + case BUILT_IN_SYNC_FETCH_AND_NAND_4:
> + case BUILT_IN_SYNC_ADD_AND_FETCH_4:
> + case BUILT_IN_SYNC_SUB_AND_FETCH_4:
> + case BUILT_IN_SYNC_OR_AND_FETCH_4:
> + case BUILT_IN_SYNC_AND_AND_FETCH_4:
> + case BUILT_IN_SYNC_XOR_AND_FETCH_4:
> + case BUILT_IN_SYNC_NAND_AND_FETCH_4:
> + case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4:
> + case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_4:
> + case BUILT_IN_SYNC_LOCK_TEST_AND_SET_4:
> + case BUILT_IN_SYNC_LOCK_RELEASE_4:
> + case BUILT_IN_ATOMIC_EXCHANGE_4:
> + case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_4:
> + case BUILT_IN_ATOMIC_STORE_4:
> + case BUILT_IN_ATOMIC_ADD_FETCH_4:
> + case BUILT_IN_ATOMIC_SUB_FETCH_4:
> + case BUILT_IN_ATOMIC_AND_FETCH_4:
> + case BUILT_IN_ATOMIC_NAND_FETCH_4:
> + case BUILT_IN_ATOMIC_XOR_FETCH_4:
> + case BUILT_IN_ATOMIC_OR_FETCH_4:
> + case BUILT_IN_ATOMIC_FETCH_ADD_4:
> + case BUILT_IN_ATOMIC_FETCH_SUB_4:
> + case BUILT_IN_ATOMIC_FETCH_AND_4:
> + case BUILT_IN_ATOMIC_FETCH_NAND_4:
> + case BUILT_IN_ATOMIC_FETCH_XOR_4:
> case BUILT_IN_ATOMIC_FETCH_OR_4:
> + access_size = 4;
> + goto do_atomic;
> +
> + case BUILT_IN_ATOMIC_LOAD_8:
> + is_store = false;
> + /* FALLTHRU */
> + case BUILT_IN_SYNC_FETCH_AND_ADD_8:
> + case BUILT_IN_SYNC_FETCH_AND_SUB_8:
> + case BUILT_IN_SYNC_FETCH_AND_OR_8:
> + case BUILT_IN_SYNC_FETCH_AND_AND_8:
> + case BUILT_IN_SYNC_FETCH_AND_XOR_8:
> + case BUILT_IN_SYNC_FETCH_AND_NAND_8:
> + case BUILT_IN_SYNC_ADD_AND_FETCH_8:
> + case BUILT_IN_SYNC_SUB_AND_FETCH_8:
> + case BUILT_IN_SYNC_OR_AND_FETCH_8:
> + case BUILT_IN_SYNC_AND_AND_FETCH_8:
> + case BUILT_IN_SYNC_XOR_AND_FETCH_8:
> + case BUILT_IN_SYNC_NAND_AND_FETCH_8:
> + case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8:
> + case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_8:
> + case BUILT_IN_SYNC_LOCK_TEST_AND_SET_8:
> + case BUILT_IN_SYNC_LOCK_RELEASE_8:
> + case BUILT_IN_ATOMIC_EXCHANGE_8:
> + case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_8:
> + case BUILT_IN_ATOMIC_STORE_8:
> + case BUILT_IN_ATOMIC_ADD_FETCH_8:
> + case BUILT_IN_ATOMIC_SUB_FETCH_8:
> + case BUILT_IN_ATOMIC_AND_FETCH_8:
> + case BUILT_IN_ATOMIC_NAND_FETCH_8:
> + case BUILT_IN_ATOMIC_XOR_FETCH_8:
> + case BUILT_IN_ATOMIC_OR_FETCH_8:
> + case BUILT_IN_ATOMIC_FETCH_ADD_8:
> + case BUILT_IN_ATOMIC_FETCH_SUB_8:
> + case BUILT_IN_ATOMIC_FETCH_AND_8:
> + case BUILT_IN_ATOMIC_FETCH_NAND_8:
> + case BUILT_IN_ATOMIC_FETCH_XOR_8:
> case BUILT_IN_ATOMIC_FETCH_OR_8:
> + access_size = 8;
> + goto do_atomic;
> +
> + case BUILT_IN_ATOMIC_LOAD_16:
> + is_store = false;
> + /* FALLTHRU */
> + case BUILT_IN_SYNC_FETCH_AND_ADD_16:
> + case BUILT_IN_SYNC_FETCH_AND_SUB_16:
> + case BUILT_IN_SYNC_FETCH_AND_OR_16:
> + case BUILT_IN_SYNC_FETCH_AND_AND_16:
> + case BUILT_IN_SYNC_FETCH_AND_XOR_16:
> + case BUILT_IN_SYNC_FETCH_AND_NAND_16:
> + case BUILT_IN_SYNC_ADD_AND_FETCH_16:
> + case BUILT_IN_SYNC_SUB_AND_FETCH_16:
> + case BUILT_IN_SYNC_OR_AND_FETCH_16:
> + case BUILT_IN_SYNC_AND_AND_FETCH_16:
> + case BUILT_IN_SYNC_XOR_AND_FETCH_16:
> + case BUILT_IN_SYNC_NAND_AND_FETCH_16:
> + case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_16:
> + case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_16:
> + case BUILT_IN_SYNC_LOCK_TEST_AND_SET_16:
> + case BUILT_IN_SYNC_LOCK_RELEASE_16:
> + case BUILT_IN_ATOMIC_EXCHANGE_16:
> + case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_16:
> + case BUILT_IN_ATOMIC_STORE_16:
> + case BUILT_IN_ATOMIC_ADD_FETCH_16:
> + case BUILT_IN_ATOMIC_SUB_FETCH_16:
> + case BUILT_IN_ATOMIC_AND_FETCH_16:
> + case BUILT_IN_ATOMIC_NAND_FETCH_16:
> + case BUILT_IN_ATOMIC_XOR_FETCH_16:
> + case BUILT_IN_ATOMIC_OR_FETCH_16:
> + case BUILT_IN_ATOMIC_FETCH_ADD_16:
> + case BUILT_IN_ATOMIC_FETCH_SUB_16:
> + case BUILT_IN_ATOMIC_FETCH_AND_16:
> + case BUILT_IN_ATOMIC_FETCH_NAND_16:
> + case BUILT_IN_ATOMIC_FETCH_XOR_16:
> case BUILT_IN_ATOMIC_FETCH_OR_16:
> + access_size = 16;
> + /* FALLTHRU */
> + do_atomic:
> {
> dest = gimple_call_arg (call, 0);
> /* DEST represents the address of a memory location.
> instrument_derefs wants the memory location, so lets
> dereference the address DEST before handing it to
> instrument_derefs. */
> - if (TREE_CODE (dest) == ADDR_EXPR)
> - dest = TREE_OPERAND (dest, 0);
> - else if (TREE_CODE (dest) == SSA_NAME || TREE_CODE (dest) ==
> INTEGER_CST)
> - dest = build2 (MEM_REF, TREE_TYPE (TREE_TYPE (dest)),
> - dest, build_int_cst (TREE_TYPE (dest), 0));
> - else
> - gcc_unreachable ();
> -
> - access_size = int_size_in_bytes (TREE_TYPE (dest));
> + tree type = build_nonstandard_integer_type (access_size
> + * BITS_PER_UNIT, 1);
> + dest = build2 (MEM_REF, type, dest,
> + build_int_cst (build_pointer_type (char_type_node), 0));
> + break;
> }
>
> default:
> --- gcc/testsuite/c-c++-common/asan/pr79944.c.jj 2017-03-08
> 12:50:40.428617273 +0100
> +++ gcc/testsuite/c-c++-common/asan/pr79944.c 2017-03-08 12:34:47.000000000
> +0100
> @@ -0,0 +1,18 @@
> +/* PR sanitizer/79944 */
> +/* { dg-do run } */
> +
> +struct S { int i; char p[1024]; };
> +
> +int
> +main ()
> +{
> + struct S *p = (struct S *) __builtin_malloc (__builtin_offsetof (struct S,
> p) + 64);
> + p->i = 5;
> + asm volatile ("" : "+r" (p) : : "memory");
> + __atomic_fetch_add ((int *) p, 5, __ATOMIC_RELAXED);
> + asm volatile ("" : "+r" (p) : : "memory");
> + if (p->i != 10)
> + __builtin_abort ();
> + __builtin_free (p);
> + return 0;
> +}
>
> Jakub
>
>
--
Richard Biener <rguent...@suse.de>
SUSE LINUX GmbH, GF: Felix Imendoerffer, Jane Smithard, Graham Norton, HRB
21284 (AG Nuernberg)
