rust/src/test/ui/issues/issue-21701.stderr
Zack M. Davis f3e9b1a703 in which the E0618 "expected function" diagnostic gets a makeover
Now the main span focuses on the erroneous not-a-function callee,
while showing the entire call expression is relegated to a secondary
span. In the case where the erroneous callee is itself a call, we
point out the definition, and, if the call expression spans multiple
lines, tentatively suggest a semicolon (because we suspect that the
"outer" call is actually supposed to be a tuple).

The new `bug!` assertion is, in fact, safe (`confirm_builtin_call` is
only called by `check_call`, which is only called with a first arg of
kind `ExprKind::Call` in `check_expr_kind`).

Resolves #51055.
2018-11-10 22:12:33 -08:00

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error[E0618]: expected function, found `U`
--> $DIR/issue-21701.rs:12:13
|
LL | fn foo<U>(t: U) {
| - `U` defined here
LL | let y = t();
| ^--
| |
| call expression requires function
error[E0618]: expected function, found `Bar`
--> $DIR/issue-21701.rs:19:13
|
LL | struct Bar;
| ----------- `Bar` defined here
...
LL | let f = Bar();
| ^^^--
| |
| call expression requires function
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0618`.