1 This fixes PR21419 by checking that read-only expressions are not given
2 as outputs for an asm statement. The gimplifier was already performed
3 consistency tests on asm statements, so this looked like a good place to
6 --- gcc/gcc/gimplify.c 14 Sep 2005 06:59:10 -0000
7 +++ gcc/gcc/gimplify.c 25 Sep 2005 12:32:41 -0000
8 @@ -3543,6 +3543,12 @@ gimplify_asm_expr (tree *expr_p, tree *p
9 parse_output_constraint (&constraint, i, 0, 0,
10 &allows_mem, &allows_reg, &is_inout);
12 + if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (link))))
14 + error ("invalid lvalue in asm output %d", i);
18 if (!allows_reg && allows_mem)
19 lang_hooks.mark_addressable (TREE_VALUE (link));