[Bug c/97598] -Wself-init alone fails to warn of a pointless assignment

[philiprbrenan at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97598

--- Comment #1 from Philip R Brenan <philiprbrenan at gmail dot com> ---
Created attachment 49454
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49454&action=edit
Test case