[Bug tree-optimization/81772] Compile-time snprintf optimization

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81772

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-08-09
     Ever confirmed|0                           |1

--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Thanks for the strncat suggestion.  That seems quite doable.  I'll try to find
some time to look into it.

I explored some of the other ideas when I implemented the GCC 7 sprintf
optimization (-fprintf-return-value) and warnings (-Wformat-overflow and
-Wformat-truncation) but they didn't seem applicable in enough situations (when
all or at least some of the arguments were constant) to justify either the
additional complexity or the space overhead.