[Bug c++/68901] UBSan triggers false -Wpadded warning

[hoganmeier at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68901

--- Comment #6 from krux <hoganmeier at gmail dot com> ---
Created attachment 46434
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46434&action=edit
proposed patch