Re: [RFC PATCH] micro-optimize __procfdname

[Alexander Monakov <amonakov@ispras.ru>]

On Sat, 5 Mar 2016, Alexander Monakov wrote:
> There's an option of returning a struct containing both a buffer and a
> pointer, but it's a bit worse code-size-wise and may be too magic:
> 
> struct procfdname_ret {
> 	char *ptr, buf[procfdsize];
> } __procfdname_impl(unsigned fd);
> 
> #define procfdname(fd) __procfdname_impl(fd).ptr
> 
> ... and in __procfdname_impl assign a pointer to last filled position in
> retval.buf to retval.ptr.

Rich explained on IRC that it's not correct (thanks!), and I don't see a way
to unbreak it. Sorry for the noise.

Alexander