[Bug tree-optimization/78969] bogus snprintf truncation warning due to missing range info

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78969

--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
I also found the following discussion about what looks like the same problem:

  https://patchwork.ffmpeg.org/patch/3630