https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69589
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
The node is added to reachable set in symbol_table::remove_unreachable_nodes
because of following condition is true:
/* If any symbol in a comdat group is reachable, force
all externally visible symbols in the same comdat
group to be reachable as well. Comdat-local symbols
can be discarded if all uses were inlined. */
if (node->same_comdat_group)
{
symtab_node *next;
for (next = node->same_comdat_group;
next != node;
next = next->same_comdat_group)
if (!next->comdat_local_p ()
&& !reachable.add (next))
enqueue_node (next, &first, &reachable);
}
Where node->debug():
(gdb) p node->debug()
_ZN2JS3ubi20PreComputedEdgeRangeD0Ev/73129 (__deleting_dtor ) @0x7ffff56702e0
Type: function definition analyzed
Visibility: externally_visible prevailing_def_ironly public weak comdat
comdat_group:_ZN2JS3ubi20PreComputedEdgeRangeD5Ev one_only visibility_specified
visibility:hidden virtual artificial
Same comdat group as: _ZN2JS3ubi20PreComputedEdgeRangeD2Ev/73127
Address is taken.
Aux: @0x7ffff5667000 References:
Referring: _ZTVN2JS3ubi20PreComputedEdgeRangeE/73125 (addr)
Read from file: Unified_cpp_js_src35.o
First run: 0
Function flags: merged_comdat
Called by:
Calls: _ZdlPvm/39897 (1.00 per call)
I've been still reducing the test-case, currently the total size is about
5.5MB.
Martin
