[Bug middle-end/77696] Confusing wording for -Wformat-overflow

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77696

--- Comment #17 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Prototype of a new approach posted here:
  "[PATCH 0/5] RFC: gimple-ssa-sprintf.c: a new approach (PR middle-end/77696)"
    https://gcc.gnu.org/ml/gcc-patches/2018-09/msg00771.html