GCC 4.8.3+ Does anybody aware of Stack Smashing Protection ?

Kim Barrett kim.barrett at oracle.com
Sat Jun 6 00:28:34 UTC 2015

On Jun 5, 2015, at 3:31 PM, Dmitry Samersoff <dmitry.samersoff at oracle.com> wrote:
> Hi Everybody,
> I'm not sure it affects hotspot but should we care about it?
> FYI:
> Beginning with GCC 4.8.3, Stack Smashing Protection (SSP) will be
> enabled by default.  The 4.8 series will enable -fstack-protector
> while 4.9 and later enable -fstack-protector-strong.

I think -fstack-protector (at least) has been the default configuration for Ubuntu’s gcc for
 some time.  I recall this helping me track down a highly intermittent bug a couple years
ago at my previous job.  When we upgraded Ubuntu versions, suddenly the bug became
quite apparent - a fixed sized stack allocated buffer in a third-party library was being overrun.

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