[Bug tree-optimization/115232] [14/15 regression] ICE during GIMPLE pass during waccess

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115232

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 #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
(gdb) p newc
$1 = (const demangle_component &) <error reading variable: Cannot access memory
at address 0x0>
(gdb) p delc
$2 = (const demangle_component &) <error reading variable: Cannot access memory
at address 0x0>

1763      demangle_component *ndc = cplus_demangle_v3_components (new_str, 0,
&np);
1764      demangle_component *ddc = cplus_demangle_v3_components (del_str, 0,
&dp);
1765      bool mismatch = new_delete_mismatch_p (*ndc, *ddc);

(gdb) p new_str
$3 = 0x7ffff7009ea8 "_ZZN5OuterIvE6methodIvEEvvQ3cstITL0__EEN5InnernwEm"
(gdb) p del_str
$4 = 0x7ffff7009e70 "_ZZN5OuterIvE6methodIvEEvvQ3cstITL0__EEN5InnerdlEPv"

so we cannot demangle these?  But we expect no failure.  It should be trivial
to build in safety here, mine for that.  I'll keep the PR open for the
failed demangle though.