https://gcc.gnu.org/bugzilla/show_bug.cgi?id=23087
--- Comment #16 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- Well, an additional note: 'char' and 'signed char' are different types (or similar in the unsigned case) could be added in the case where the types have the same representation, one is char and the other is signed or unsigned char. Or the wording of the original warning could be refined in that case. But I don't think the less-specific wording about incompatible types would be appropriate here, or that the warning should be enabled more widely than the general signedness case (if anything, this case is less serious than that one).
