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Editorial Team
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Asked: 2026-05-27T13:18:28+00:00

I’m trying to set option -fstack-protector-all in GCC 3.4.3 compiler for enabling some stack

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I’m trying to set option -fstack-protector-all in GCC 3.4.3 compiler for enabling some stack smashing protection scenarios. However when compiling with this i got
error: unrecognized command line option “-fstack-protector-all”
. So seems this option isn’t implemented in GCC 3.4.3 ?? or Am I missing something ?

If it is not implemented in older GCC compiler what is the best / easiest alternative to this ?

Or maybe some useful code pattern to implement stack-smashing protector in C code itself ?

Thanks

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1 Answer

  1. Editorial Team

    You seem to be only one minor version off a gcc version that seems to be able to provide you with this particular smash protection. I found this when googling:

    http://www.research.ibm.com/trl/projects/security/ssp/

    Maybe you could upgrade to that one (one minor number up) and still be compatible with your vendor?

    Additionally, as at least for a number of years canary values are default set in gcc (no need to use the option you mention), have you looked at the disassembly of a simple program? If you see some storing/loading from a (gs) location near end of stack, it’s already implemented.

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