[Bug c/116871] -Wincompatible-pointer-types for function pointers could highlight the mismatch better

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116871

--- Comment #8 from Eric Gallager <egallager at gcc dot gnu.org> ---
I've got an additional example from an old edition of Tcl (8.4) to add here (in
generic/tclCmdMZ.c); might take a bit to reduce, though...