[Bug c++/115944] Incorrect code generation with -Og

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115944

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |sjames at gcc dot gnu.org

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
I think the UB makes it hard here. I'll let someone else comment if the
expectation is reasonable, but optimize("O0") on MyClass::call() makes it work.

If you add a __builtin_abort() call underneath the dodgy assignment, it works
fine. Is there a reason you can't use that instead? (Why are we relying on a
segfault?)