https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103262
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
merge_call_side_effects has
modref_parm_map chain_map;
...
for (auto kill : saved_kills)
{
if (kill.parm_index >= (int)parm_map.length ())
continue;
modref_parm_map &m
= kill.parm_index == MODREF_STATIC_CHAIN_PARM
? chain_map
: parm_map[kill.parm_index];
if (m.parm_index == MODREF_LOCAL_MEMORY_PARM
|| m.parm_index == MODREF_UNKNOWN_PARM
|| m.parm_index == MODREF_RETSLOT_PARM
|| !m.parm_offset_known)
continue;
modref_access_node n = kill;
n.parm_index = m.parm_index;
n.parm_offset += m.parm_offset;
if (modref_access_node::insert_kill (cur_summary->kills, n,
record_adjustments))
changed = true;
}
But chain_map is never initialized.
