[PATCH v2 1/3] posix: Remove dynamic memory allocation from execl{e,p}

[Florian Weimer]

On 02/01/2016 06:18 PM, Adhemerval Zanella wrote:

> Right, it is not ensuring the safeness. Is '-fstack-check' the suffice 
> option to ensure it or do we need a more strict one?

In my tests, the initial stack banging probe is sometimes more than a
page away from the current stack pointer, so it does not look safe to me.

For posix_spawn, it's probably simpler for now to compute the shell
invocation in the parent.  That is, perform two vforks in case the first
execve fails.

Florian