[Bug tree-optimization/96963] -Wstringop-overflow false positive on -O3 or -O2 -ftree-vectorize when assigning consecutive char struct members

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96963

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
store-merging will also happily store a (short)0 there, but likely runs after
strlen.