The warning control falls into the C++ trap of using a reference
to old hashtable contents for a put operation which can end up
re-allocating that before reading from the old freed referenced to
source. Fixed by introducing a temporary.
2022-01-17 Richard Biener <rguenther@suse.de>
PR middle-end/101292
* diagnostic-spec.c (copy_warning): Make sure to not
reference old hashtable content on possible resize.
* warning-control.cc (copy_warning): Likewise.
else
{
if (from_spec)
- nowarn_map->put (to, *from_spec);
+ {
+ nowarn_spec_t tem = *from_spec;
+ nowarn_map->put (to, tem);
+ }
else
nowarn_map->remove (to);
}
gcc_assert (supp);
gcc_checking_assert (nowarn_map);
- nowarn_map->put (to_loc, *from_spec);
+ nowarn_spec_t tem = *from_spec;
+ nowarn_map->put (to_loc, tem);
}
else
{