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Merge pull request #2963 from commandline/master

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Fix regression in print_literal
This commit is contained in:
Oliver Schneider 2018-07-26 10:11:34 +02:00 committed by GitHub
commit b0dabce478
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 87 additions and 83 deletions
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32
clippy_lints/src/write.rs
View File

@ -290,22 +290,24 @@ fn check_tts(cx: &EarlyContext<'a>, tts: &ThinTokenStream, is_write: bool) -> Op
idx += 1;
},
ExprKind::Assign(lhs, rhs) => {
if let ExprKind::Path(_, p) = &lhs.node {
let mut all_simple = true;
let mut seen = false;
for arg in &args {
match arg.position {
| ArgumentImplicitlyIs(_)
| ArgumentIs(_)
=> {},
ArgumentNamed(name) => if *p == name {
seen = true;
all_simple &= arg.format == SIMPLE;
},
if let ExprKind::Lit(_) = rhs.node {
if let ExprKind::Path(_, p) = &lhs.node {
let mut all_simple = true;
let mut seen = false;
for arg in &args {
match arg.position {
| ArgumentImplicitlyIs(_)
| ArgumentIs(_)
=> {},
ArgumentNamed(name) => if *p == name {
seen = true;
all_simple &= arg.format == SIMPLE;
},
}
}
if all_simple && seen {
span_lint(cx, lint, rhs.span, "literal with an empty format string");
}
}
if all_simple && seen {
span_lint(cx, lint, rhs.span, "literal with an empty format string");
}
}
},

1
tests/ui/print_literal.rs
View File

@ -8,6 +8,7 @@ fn main() {
println!("Hello");
let world = "world";
println!("Hello {}", world);
println!("Hello {world}", world=world);
println!("3 in hex is {:X}", 3);
println!("2 + 1 = {:.4}", 3);
println!("2 + 1 = {:5.4}", 3);

68
tests/ui/print_literal.stderr
View File

@ -1,87 +1,87 @@
error: literal with an empty format string
--> $DIR/print_literal.rs:23:71
--> $DIR/print_literal.rs:24:71
|
23 | println!("{} of {:b} people know binary, the other half doesn't", 1, 2);
24 | println!("{} of {:b} people know binary, the other half doesn't", 1, 2);
| ^
|
= note: `-D print-literal` implied by `-D warnings`
error: literal with an empty format string
--> $DIR/print_literal.rs:24:24
--> $DIR/print_literal.rs:25:24
|
24 | print!("Hello {}", "world");
25 | print!("Hello {}", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:25:36
--> $DIR/print_literal.rs:26:36
|
25 | println!("Hello {} {}", world, "world");
26 | println!("Hello {} {}", world, "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:26:26
--> $DIR/print_literal.rs:27:26
|
26 | println!("Hello {}", "world");
27 | println!("Hello {}", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:27:30
--> $DIR/print_literal.rs:28:30
|
27 | println!("10 / 4 is {}", 2.5);
28 | println!("10 / 4 is {}", 2.5);
| ^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:28:28
--> $DIR/print_literal.rs:29:28
|
28 | println!("2 + 1 = {}", 3);
29 | println!("2 + 1 = {}", 3);
| ^
error: literal with an empty format string
--> $DIR/print_literal.rs:33:25
|
33 | println!("{0} {1}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:33:34
|
33 | println!("{0} {1}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:34:25
|
34 | println!("{1} {0}", "hello", "world");
34 | println!("{0} {1}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:34:34
|
34 | println!("{1} {0}", "hello", "world");
34 | println!("{0} {1}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:37:33
--> $DIR/print_literal.rs:35:25
|
37 | println!("{foo} {bar}", foo="hello", bar="world");
| ^^^^^^^
35 | println!("{1} {0}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:37:46
--> $DIR/print_literal.rs:35:34
|
37 | println!("{foo} {bar}", foo="hello", bar="world");
| ^^^^^^^
35 | println!("{1} {0}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:38:33
|
38 | println!("{bar} {foo}", foo="hello", bar="world");
38 | println!("{foo} {bar}", foo="hello", bar="world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:38:46
|
38 | println!("{bar} {foo}", foo="hello", bar="world");
38 | println!("{foo} {bar}", foo="hello", bar="world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:39:33
|
39 | println!("{bar} {foo}", foo="hello", bar="world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/print_literal.rs:39:46
|
39 | println!("{bar} {foo}", foo="hello", bar="world");
| ^^^^^^^
error: aborting due to 14 previous errors

1
tests/ui/write_literal.rs
View File

@ -11,6 +11,7 @@ fn main() {
writeln!(&mut v, "Hello");
let world = "world";
writeln!(&mut v, "Hello {}", world);
writeln!(&mut v, "Hello {world}", world=world);
writeln!(&mut v, "3 in hex is {:X}", 3);
writeln!(&mut v, "2 + 1 = {:.4}", 3);
writeln!(&mut v, "2 + 1 = {:5.4}", 3);

68
tests/ui/write_literal.stderr
View File

@ -1,87 +1,87 @@
error: literal with an empty format string
--> $DIR/write_literal.rs:26:79
--> $DIR/write_literal.rs:27:79
|
26 | writeln!(&mut v, "{} of {:b} people know binary, the other half doesn't", 1, 2);
27 | writeln!(&mut v, "{} of {:b} people know binary, the other half doesn't", 1, 2);
| ^
|
= note: `-D write-literal` implied by `-D warnings`
error: literal with an empty format string
--> $DIR/write_literal.rs:27:32
--> $DIR/write_literal.rs:28:32
|
27 | write!(&mut v, "Hello {}", "world");
28 | write!(&mut v, "Hello {}", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:28:44
--> $DIR/write_literal.rs:29:44
|
28 | writeln!(&mut v, "Hello {} {}", world, "world");
29 | writeln!(&mut v, "Hello {} {}", world, "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:29:34
--> $DIR/write_literal.rs:30:34
|
29 | writeln!(&mut v, "Hello {}", "world");
30 | writeln!(&mut v, "Hello {}", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:30:38
--> $DIR/write_literal.rs:31:38
|
30 | writeln!(&mut v, "10 / 4 is {}", 2.5);
31 | writeln!(&mut v, "10 / 4 is {}", 2.5);
| ^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:31:36
--> $DIR/write_literal.rs:32:36
|
31 | writeln!(&mut v, "2 + 1 = {}", 3);
32 | writeln!(&mut v, "2 + 1 = {}", 3);
| ^
error: literal with an empty format string
--> $DIR/write_literal.rs:36:33
|
36 | writeln!(&mut v, "{0} {1}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:36:42
|
36 | writeln!(&mut v, "{0} {1}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:37:33
|
37 | writeln!(&mut v, "{1} {0}", "hello", "world");
37 | writeln!(&mut v, "{0} {1}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:37:42
|
37 | writeln!(&mut v, "{1} {0}", "hello", "world");
37 | writeln!(&mut v, "{0} {1}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:40:41
--> $DIR/write_literal.rs:38:33
|
40 | writeln!(&mut v, "{foo} {bar}", foo="hello", bar="world");
| ^^^^^^^
38 | writeln!(&mut v, "{1} {0}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:40:54
--> $DIR/write_literal.rs:38:42
|
40 | writeln!(&mut v, "{foo} {bar}", foo="hello", bar="world");
| ^^^^^^^
38 | writeln!(&mut v, "{1} {0}", "hello", "world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:41:41
|
41 | writeln!(&mut v, "{bar} {foo}", foo="hello", bar="world");
41 | writeln!(&mut v, "{foo} {bar}", foo="hello", bar="world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:41:54
|
41 | writeln!(&mut v, "{bar} {foo}", foo="hello", bar="world");
41 | writeln!(&mut v, "{foo} {bar}", foo="hello", bar="world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:42:41
|
42 | writeln!(&mut v, "{bar} {foo}", foo="hello", bar="world");
| ^^^^^^^
error: literal with an empty format string
--> $DIR/write_literal.rs:42:54
|
42 | writeln!(&mut v, "{bar} {foo}", foo="hello", bar="world");
| ^^^^^^^
error: aborting due to 14 previous errors