[Bug tree-optimization/122380] [15/16 regression] std::variant with std::vectors of differing types may lead to double frees since r15-5595

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122380

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|libstdc++                   |tree-optimization
             Target|arm-unknown-linux-gnueabihf |x86_64
   Last reconfirmed|                            |2026-02-02
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
            Summary|[15/16 regression]          |[15/16 regression]
                   |std::variant with           |std::variant with
                   |std::vectors of differing   |std::vectors of differing
                   |types may lead to double    |types may lead to double
                   |frees                       |frees since r15-5595

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I can reproduce the issue with the original testcase on x86_64 on the trunk.


`-O2` fails so does `-fno-ipa-modref -O2` So it is not a modref issue.
`-O2 -fno-ipa-icf` also fails.


r15-5595-g27778979c9a1e3