https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106331
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
Status|NEW |ASSIGNED
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Thanks for tracking down. Obviously
/* If the MEM_REF has no acceptable address, try to get the base object
from the original address we got, and build an all-aliasing
unknown-sized access to that one. */
if (is_gimple_mem_ref_addr (TREE_OPERAND (exp, 0)))
set_mem_attributes (mem, exp, 0);
else if (TREE_CODE (TREE_OPERAND (exp, 0)) == ADDR_EXPR
&& (exp = get_base_address (TREE_OPERAND (TREE_OPERAND (exp, 0),
0))))
{
exp = build_fold_addr_expr (exp);
exp = fold_build2 (MEM_REF,
build_array_type (char_type_node,
build_range_type (sizetype,
size_zero_node,
NULL)),
exp, build_int_cst (ptr_type_node, 0));
set_mem_attributes (mem, exp, 0);
^^^
is broken. Looks like introduced with r0-117468-g625ed1721782f6
