Error help msg when attempting usage of ~ as unary operator misleading

[tcullum-gpsw]

I find the error message confusing and possibly incorrect when attempting to use ~ as a unary operator:

In current Rust stable and nightly, I get:

error: `~` cannot be used as a unary operator
 --> src/main.rs:5:11
  |
5 |     num = ~num + 1;
  |           ^ help: use `!` to perform bitwise negation

The "help" is misleading because it is suggesting using ! to "perform bitwise negation." But this is not really what ~ performs. NEG and NOT are two separate instructions which perform different things. I think this message would be best changed to "perform bitwise NOT" or "perform bitwise one's complement"

[nagisa]

~ is referred to as “bitwise not”, “binary complement” and “bitwise negation” among many other names, so the current diagnostic is valid. Not sure where the confusion might arise here, because “bitwise” implies that the operation is… well… bitwise.

[mark-i-m]

bitwise not would be my preferred phrasing...