[Bug tree-optimization/110060] Adding optimizer hints to std::vector causes a new -Wstringop-overread false positive

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110060

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The library change also caused:

FAIL: g++.dg/pr104547.C -std=gnu++17 scan-tree-dump-not vrp2
"_M_default_append"

So I'm definitely changing std::vector again. I don't know if this is worth
keeping open as a tree-optimization bug, or just blame the increased function
sizes in the library code.