[Bug libstdc++/109889] [13/14 Regression] Segfault in __run_exit_handlers since r13-5309-gc3c6c307792026

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109889

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Tulio found out that __gnu_debug::_Safe_iterator_base::_M_reset() is
overwriting the stack where r2 (TOC pointer) was saved by __run_exit_handlers()
(at address 0x00007fffffffe8e8). This function was called with the wrong
address of the object.

He was able to track this value back from
__gnu_debug::_Safe_sequence_base::_M_detach_all() at debug.cc:325

p *this
$1 = {
  _M_iterators = 0x7fffffffe8e8,
  _M_const_iterators = 0x0,
  _M_version = 1
}