From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH v3] tools/perf/metricgroup: Fix printing event names of
 metric group with multiple events incase of overlapping events
Date: Mon, 10 Feb 2020 10:00:31 -0800
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> > stack declarations of variable length arrays are not
> > a good thing.
> > 
> > https://lwn.net/Articles/749089/
> > 
> > and
> > 
> > 	bool evlist_used[perf_evlist->core.nr_entries] = {};
> 
> hum, I think we already have few of them in perf ;-)

For user space they don't really matter as long as the size is
not totally out of bound, it has a fairly large stack compared
to the kernel, and also is less security sensitive.

-Andi