[Bug middle-end/111523] Unexpected performance regression with -ftrivial-auto-var-init=zero for e.g. systemctl unmask

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111523

--- Comment #10 from qinzhao at gcc dot gnu.org ---
(In reply to Andrew Pinski from comment #9)

> Anways systemd has now changed the buffer to 256 which is much much smaller
> and for most calls enough in size before needing to reallocate the buffer
> that it has now become fast.
> 
> Anyways -ftrivial-auto-var-init=zero just exposed a performance (stack size)
> issue with already existing issue inside the systemd code. A good thing
> really. 
> 
> So closing as moved.

thanks a lot for the analysis and the solution of this performance issue.
really appreciate.