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1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 // bad arguments to the format! call
14 // bad number of arguments, see #44954 (originally #15780)
17 //~^ ERROR: 1 positional argument in format string, but no arguments were given
20 //~^ ERROR: invalid reference to positional argument 1 (there is 1 argument)
21 //~^^ ERROR: argument never used
24 //~^ ERROR: 2 positional arguments in format string, but no arguments were given
26 format
!("{0} {1}", 1);
27 //~^ ERROR: invalid reference to positional argument 1 (there is 1 argument)
29 format
!("{0} {1} {2}", 1, 2);
30 //~^ ERROR: invalid reference to positional argument 2 (there are 2 arguments)
32 format
!("{} {value} {} {}", 1, value
=2);
33 //~^ ERROR: invalid reference to positional argument 2 (there are 2 arguments)
34 format
!("{name} {value} {} {} {} {} {} {}", 0, name
=1, value
=2);
35 //~^ ERROR: invalid reference to positional arguments 3, 4 and 5 (there are 3 arguments)
37 format
!("{} {foo} {} {bar} {}", 1, 2, 3);
38 //~^ ERROR: there is no argument named `foo`
39 //~^^ ERROR: there is no argument named `bar`
41 format
!("{foo}"); //~ ERROR: no argument named `foo`
42 format
!("", 1, 2); //~ ERROR: multiple unused formatting arguments
43 format
!("{}", 1, 2); //~ ERROR: argument never used
44 format
!("{1}", 1, 2); //~ ERROR: argument never used
45 format
!("{}", 1, foo
=2); //~ ERROR: named argument never used
46 format
!("{foo}", 1, foo
=2); //~ ERROR: argument never used
47 format
!("", foo
=2); //~ ERROR: named argument never used
48 format
!("{} {}", 1, 2, foo
=1, bar
=2); //~ ERROR: multiple unused formatting arguments
50 format
!("{foo}", foo
=1, foo
=2); //~ ERROR: duplicate argument
51 format
!("", foo
=1, 2); //~ ERROR: positional arguments cannot follow
53 // bad named arguments, #35082
55 format
!("{valuea} {valueb}", valuea
=5, valuec
=7);
56 //~^ ERROR there is no argument named `valueb`
57 //~^^ ERROR named argument never used
59 // bad syntax of the format string
61 format
!("{"); //~ ERROR: expected `'}'` but string was terminated
63 format!("foo
} bar
"); //~ ERROR: unmatched `}` found
64 format!("foo
}"); //~ ERROR: unmatched `}` found
66 format!("foo
%s baz
", "bar
"); //~ ERROR: argument never used