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Test for formating placeholders in panic_fmt lint test.

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This commit is contained in:
Mara Bos 2020-10-18 23:36:00 +02:00
parent b8a8b681b8
commit 14dcf0a8ac
2 changed files with 24 additions and 16 deletions
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4
src/test/ui/panic-brace.rs
View File

@ -4,6 +4,6 @@
fn main() {
panic!("here's a brace: {"); //~ WARN Panic message contains a brace
std::panic!("another one: }"); //~ WARN Panic message contains a brace
core::panic!("Hello { { {"); //~ WARN Panic message contains a brace
assert!(false, "} } }..."); //~ WARN Panic message contains a brace
core::panic!("Hello {}"); //~ WARN Panic message contains an unused formatting placeholder
assert!(false, "{:03x} bla"); //~ WARN Panic message contains an unused formatting placeholder
}

36
src/test/ui/panic-brace.stderr
View File

@ -23,28 +23,36 @@ help: add a "{}" format string to use the message literally
LL | std::panic!("{}", "another one: }");
| ^^^^^
warning: Panic message contains a brace
--> $DIR/panic-brace.rs:7:5
warning: Panic message contains an unused formatting placeholder
--> $DIR/panic-brace.rs:7:18
|
LL | core::panic!("Hello { { {");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL | core::panic!("Hello {}");
| ^^^^^^^^^^
|
= note: This message is not used as a format string, but will be in a future Rust version
help: add a "{}" format string to use the message literally
= note: This message is not used as a format string when given without arguments, but will be in a future Rust version
help: add the missing argument(s)
|
LL | core::panic!("{}", "Hello { { {");
LL | core::panic!("Hello {}", argument);
| ^^^^^^^^^^
help: or add a "{}" format string to use the message literally
|
LL | core::panic!("{}", "Hello {}");
| ^^^^^
warning: Panic message contains a brace
--> $DIR/panic-brace.rs:8:5
warning: Panic message contains an unused formatting placeholder
--> $DIR/panic-brace.rs:8:20
|
LL | assert!(false, "} } }...");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL | assert!(false, "{:03x} bla");
| ^^^^^^^^^^^^
|
= note: This message is not used as a format string, but will be in a future Rust version
help: add a "{}" format string to use the message literally
= note: This message is not used as a format string when given without arguments, but will be in a future Rust version
help: add the missing argument(s)
|
LL | assert!(false, "{}", "} } }...");
LL | assert!(false, "{:03x} bla", argument);
| ^^^^^^^^^^
help: or add a "{}" format string to use the message literally
|
LL | assert!(false, "{}", "{:03x} bla");
| ^^^^^
warning: 4 warnings emitted