[Bug c/78408] Aggressive optimization of zeroing results in incorrect behavior

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78408

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Do you think you could produce a smaller, stand-alone testcase that reproduces
the issue? Or at least attach the preprocessed sources to the report?