[Bug tree-optimization/107919] Possibly false-positive "maybe-uninitialized" with GCC 12 on complex variant-variant-tuple-unique_ptr types

[freddie_chopin at op dot pl via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107919

--- Comment #1 from Freddie Chopin <freddie_chopin at op dot pl> ---
More possibly imporant notes:
1. The warning appears only with -O1 or -O2, with 0, s, g or 3 the warning is
gone.
2. Adding -fsanitize=undefined to compiler invocation makes the warning go away
as well - no terminal output is produced in that case.