[PATCH] Use vec::reserve before vec_safe_grow_cleared is called

[Richard Biener]

On Mon, Jul 27, 2020 at 2:54 PM Martin Liška <mliska@suse.cz> wrote:
>
> On 7/27/20 2:51 PM, Richard Biener wrote:
> > On Mon, Jul 27, 2020 at 2:50 PM Andreas Schwab <schwab@linux-m68k.org> wrote:
> >>
> >> On Jul 27 2020, Martin Liška wrote:
> >>
> >>> @Andreas: Is it a known issue?
> >>
> >> Which issue?
> >
> > I guess Martin means the checking glibc done looks excessive
> > (for the specific case of realloc). But yes, it's enabled in the build roots
> > so we just get what we ask for.
>
> Yes. I'm basically curious who is this enabled/disabled for glibc.
> I speak e.g. about:
>
> #0  0x00007ffff7e886f0 in mem2chunk_check () from /lib64/libc.so.6
> #1  0x00007ffff7e8cb8a in realloc_check () from /lib64/libc.so.6
> #2  0x00005555555550bf in main (argc=<optimized out>, argv=<optimized out>) at bench.c:7

It's /etc/profile.d/malloc-debug.sh

> Martin
>
> >
> > Richard.
> >
> >> Andreas.
> >>
> >> --
> >> Andreas Schwab, schwab@linux-m68k.org
> >> GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
> >> "And now for something completely different."
>