[Bug libstdc++/88374] crash when stepping into for loop where iterators are created and compared with gdb

[bob.steagall.cpp at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88374

--- Comment #2 from Bob Steagall <bob.steagall.cpp at gmail dot com> ---
See https://sourceware.org/bugzilla/show_bug.cgi?id=20020, especially comment 7
for more data.