[Bug c++/71792] deducing type from bitfield leads to overflow

[vrzubov at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71792

--- Comment #3 from vadim <vrzubov at gmail dot com> ---
Created attachment 44807
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44807&action=edit
test case

after patch current test have to work