On Sun, Aug 21, 2011 at 5:45 PM, Fabian Groffen <Fabian.Groffen@cwi.nl> wrote:

On 21-08-2011 17:04:52 +0300, Michael Sioutis wrote:
> Hello,
>
> I get an error when trying to compile latest MonetDB default branch on my
> Ubuntu 10.04 64bit machine.
>
> bootstrap: OK
> configure (../configure --prefix=/opt/MonetDB/ --enable-monetdb5
> --enable-sql --enable-rdf --enable-geom --enable-bits=64 --enable-debug
> --enable-datacell): OK
> make -j2: ERROR
>
> The error is:

> ../../gdk/[1]gdk_batop.mx: In function ‘BATsetprop’:
> ../../gdk/[2]gdk_batop.mx:2890: error: not protecting function: no buffer at

> least 8 bytes long
>
> I think flags -fstack-protector-all and -Wstack-protector are to blame,
> they default to 8 bytes.
> I can skip the problem if I set 8 byte long dummy buffers to EVERY function
> that
> doesn't have such a buffer, e.g., char mybuf[8]; memset(buf, 0,
> sizeof(buf));
>
> I also thought of setting the buffer size to 1, by passing --param
> spp-buffer-size=1 as a compiler option, but then I get various other
> errors.

-fstack-protector-all should check everything.

I'd be interested to see your configure output.

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