1020e3036b
When there're missing arguments in a function call, present a list of
all the expected types:
```rust
fn main() {
t("");
}
fn t(a: &str, x: String) {}
```
```bash
% rustc file.rs
file.rs:3:5: 2:8 error: this function takes 2 parameters but 0
parameters were supplied [E0061]
file.rs:3 t();
^~~
file.rs:3:5: 2:8 help: run `rustc --explain E0061` to see a detailed explanation
file.rs:3:5: 2:8 note: the following parameter types were expected: &str, std::string::String
error: aborting due to previous error
```
Fixes #33649
44 lines
2.0 KiB
Rust
44 lines
2.0 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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extern {
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fn foo(f: isize, x: u8, ...);
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}
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extern "C" fn bar(f: isize, x: u8) {}
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fn main() {
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unsafe {
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foo(); //~ ERROR: this function takes at least 2 parameters but 0 parameters were supplied
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//~^ NOTE the following parameter types were expected
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foo(1); //~ ERROR: this function takes at least 2 parameters but 1 parameter was supplied
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//~^ NOTE the following parameter types were expected
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let x: unsafe extern "C" fn(f: isize, x: u8) = foo;
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//~^ ERROR: mismatched types
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//~| expected type `unsafe extern "C" fn(isize, u8)`
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//~| found type `unsafe extern "C" fn(isize, u8, ...) {foo}`
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//~| NOTE: expected non-variadic fn, found variadic function
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let y: extern "C" fn(f: isize, x: u8, ...) = bar;
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//~^ ERROR: mismatched types
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//~| expected type `extern "C" fn(isize, u8, ...)`
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//~| found type `extern "C" fn(isize, u8) {bar}`
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//~| NOTE: expected variadic fn, found non-variadic function
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foo(1, 2, 3f32); //~ ERROR: can't pass an `f32` to variadic function, cast to `c_double`
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foo(1, 2, true); //~ ERROR: can't pass `bool` to variadic function, cast to `c_int`
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foo(1, 2, 1i8); //~ ERROR: can't pass `i8` to variadic function, cast to `c_int`
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foo(1, 2, 1u8); //~ ERROR: can't pass `u8` to variadic function, cast to `c_uint`
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foo(1, 2, 1i16); //~ ERROR: can't pass `i16` to variadic function, cast to `c_int`
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foo(1, 2, 1u16); //~ ERROR: can't pass `u16` to variadic function, cast to `c_uint`
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}
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}
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