[Bug other/82368] [8 regression] with r253275 several new test cases in libbacktrace fail

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82368

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43412
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43412&action=edit
gcc8-pr82368.patch

Untested fix.