| // Copyright 2013 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| fn main() { |
| // bad arguments to the format! call |
| |
| // bad number of arguments, see #44954 (originally #15780) |
| |
| format!("{}"); |
| //~^ ERROR: 1 positional argument in format string, but no arguments were given |
| |
| format!("{1}", 1); |
| //~^ ERROR: invalid reference to positional argument 1 (there is 1 argument) |
| //~^^ ERROR: argument never used |
| |
| format!("{} {}"); |
| //~^ ERROR: 2 positional arguments in format string, but no arguments were given |
| |
| format!("{0} {1}", 1); |
| //~^ ERROR: invalid reference to positional argument 1 (there is 1 argument) |
| |
| format!("{0} {1} {2}", 1, 2); |
| //~^ ERROR: invalid reference to positional argument 2 (there are 2 arguments) |
| |
| format!("{} {value} {} {}", 1, value=2); |
| //~^ ERROR: invalid reference to positional argument 2 (there are 2 arguments) |
| format!("{name} {value} {} {} {} {} {} {}", 0, name=1, value=2); |
| //~^ ERROR: invalid reference to positional arguments 3, 4 and 5 (there are 3 arguments) |
| |
| format!("{} {foo} {} {bar} {}", 1, 2, 3); |
| //~^ ERROR: there is no argument named `foo` |
| //~^^ ERROR: there is no argument named `bar` |
| |
| format!("{foo}"); //~ ERROR: no argument named `foo` |
| format!("", 1, 2); //~ ERROR: multiple unused formatting arguments |
| format!("{}", 1, 2); //~ ERROR: argument never used |
| format!("{1}", 1, 2); //~ ERROR: argument never used |
| format!("{}", 1, foo=2); //~ ERROR: named argument never used |
| format!("{foo}", 1, foo=2); //~ ERROR: argument never used |
| format!("", foo=2); //~ ERROR: named argument never used |
| format!("{} {}", 1, 2, foo=1, bar=2); //~ ERROR: multiple unused formatting arguments |
| |
| format!("{foo}", foo=1, foo=2); //~ ERROR: duplicate argument |
| format!("", foo=1, 2); //~ ERROR: positional arguments cannot follow |
| |
| // bad named arguments, #35082 |
| |
| format!("{valuea} {valueb}", valuea=5, valuec=7); |
| //~^ ERROR there is no argument named `valueb` |
| //~^^ ERROR named argument never used |
| |
| // bad syntax of the format string |
| |
| format!("{"); //~ ERROR: expected `'}'` but string was terminated |
| |
| format!("foo } bar"); //~ ERROR: unmatched `}` found |
| format!("foo }"); //~ ERROR: unmatched `}` found |
| |
| format!("foo %s baz", "bar"); //~ ERROR: argument never used |
| |
| format!(r##" |
| |
| {foo} |
| |
| "##); |
| //~^^^ ERROR: there is no argument named `foo` |
| |
| // bad syntax in format string with multiple newlines, #53836 |
| format!("first number: {} |
| second number: {} |
| third number: {} |
| fourth number: {} |
| fifth number: {} |
| sixth number: {} |
| seventh number: {} |
| eighth number: {} |
| ninth number: { |
| tenth number: {}", |
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10); |
| //~^^ ERROR: invalid format string |
| } |