[hardening-discuss] -DFORTIFY_SOURCE seems to cause SIGBUS on sparc

[Stefan Fritsch]

Hi Kees,

On Thursday 19 June 2008, Kees Cook wrote:
> On Thu, Jun 19, 2008 at 08:38:33PM +0200, Stefan Fritsch wrote:
> > I had this bug report which seems to point to gcc doing something
> > wrong on sparc with -DFORTIFY_SOURCE and causing SIGBUS:
> >
> > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=485525

> Any chance of getting a minimal reproducer so we can open a gcc or
> glibc bug for it?

it seems my initial thought was wrong and it was not -DFORTIFY_SOURCE 
but just gcc 4.3 being more aggressive at optimizing memcpy()s away. 
When I have time, I will check if the patched apache still works 
with -DFORTIFY_SOURCE.

Cheers,
Stefan