Mailinglist Archive: opensuse (2532 mails)

[Anders Johansson <ajh@xxxxxxxxxx>]

On Sunday 04 May 2008 11:46:12 Sam Clemens wrote:
> Cristian Rodríguez wrote:
> > David C. Rankin escribió:
> > > int main(int argc, char *argv[])
> > > {
> > >     char *endptr, *str, newstr[20];
> > >
> > >     strcpy(newstr,argv[1]);
> >
> >        ^^
> > ./a.out 23000000000000000000000000000000000000
> >
> > *** stack smashing detected ***: ./a.out terminated
>
>   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> I've never see that run-time error message.
> What compiler flags did you use to get THAT to be produced?

-fstack-protector

-ffortify=2 is also quite useful. At the cost of a bit of performance, it 
checks most of your boundaries for you

Anders
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