[Bug tree-optimization/96447] False positive -Wstringop-overflow with -O3 due to loop unrolling

[daniel at constexpr dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96447

--- Comment #2 from Daniel Scharrer <daniel at constexpr dot org> ---
For warnings enabled by something like -fanalyzer this might be reasonable but
for a warning I enabled by default (not even requiring -Wall) the bar should
ideally be a bit higher.