https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113488
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a look.
(gdb) p debug_dwarf_die (die)
DIE 0: DW_TAG_label (0x7ffff68dc410)
abbrev id: 0 offset: 0 mark: 0
(gdb) p attr_kind
$2 = DW_AT_abstract_origin
and in gen_label_die we do
tree origin = decl_ultimate_origin (decl);
dw_die_ref lbl_die = lookup_decl_die (decl);
rtx insn;
char label[MAX_ARTIFICIAL_LABEL_BYTES];
if (!lbl_die)
{
lbl_die = new_die (DW_TAG_label, context_die, decl);
equate_decl_number_to_die (decl, lbl_die);
if (origin != NULL)
add_abstract_origin_attribute (lbl_die, origin);
but origin == decl here.
(gdb) p decl->decl_common.abstract_origin
$6 = <label_decl 0x7ffff7fc8e00 no_change>
that's read this way from the LTO data. A workaround right in dwarf2out
is possible, but I'll see if this self-reference makes sense (and where
it comes from).
