1bd7934d89
```
error[E0308]: mismatched types
--> $DIR/macro-span-caller-replacement.rs:5:17
|
LL | s = format!("{arg}");
| ^^^^^^^^^^^^^^^^ expected `&str`, found `String`
...
LL | macro_with_format!();
| -------------------- in this macro invocation
|
= note: this error originates in the macro `format` which comes from the expansion of the macro `macro_with_format` (in Nightly builds, run with -Z macro-backtrace for more info)
```
16 lines
378 B
Rust
16 lines
378 B
Rust
macro_rules! macro_with_format { () => {
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fn check_5(arg : usize) -> String {
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let s : &str;
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if arg < 5 {
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s = format!("{arg}"); //~ ERROR mismatched types
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} else {
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s = String::new(); //~ ERROR mismatched types
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}
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String::from(s)
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}
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}}
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fn main() {
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macro_with_format!();
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println!( "{}", check_5(6) );
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}
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