1bd7934d89
```
error[E0308]: mismatched types
--> $DIR/macro-span-caller-replacement.rs:5:17
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LL | s = format!("{arg}");
| ^^^^^^^^^^^^^^^^ expected `&str`, found `String`
...
LL | macro_with_format!();
| -------------------- in this macro invocation
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= note: this error originates in the macro `format` which comes from the expansion of the macro `macro_with_format` (in Nightly builds, run with -Z macro-backtrace for more info)
```
44 lines
1.9 KiB
Text
44 lines
1.9 KiB
Text
error: recursion limit reached while expanding `$crate::format_args_nl!`
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--> $DIR/issue-41731-infinite-macro-println.rs:8:13
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LL | println!(stack!($overflow))
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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...
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LL | stack!("overflow");
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| ------------------ in this macro invocation
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= help: consider increasing the recursion limit by adding a `#![recursion_limit = "10"]` attribute to your crate (`issue_41731_infinite_macro_println`)
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= note: this error originates in the macro `println` which comes from the expansion of the macro `stack` (in Nightly builds, run with -Z macro-backtrace for more info)
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note: trace_macro
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--> $DIR/issue-41731-infinite-macro-println.rs:14:5
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LL | stack!("overflow");
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| ^^^^^^^^^^^^^^^^^^
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= note: expanding `stack! { "overflow" }`
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= note: to `println! (stack! ("overflow"))`
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= note: expanding `println! { stack! ("overflow") }`
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= note: to `{ $crate :: io :: _print($crate :: format_args_nl! (stack! ("overflow"))); }`
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= note: expanding `stack! { "overflow" }`
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= note: to `println! (stack! ("overflow"))`
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= note: expanding `println! { stack! ("overflow") }`
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= note: to `{ $crate :: io :: _print($crate :: format_args_nl! (stack! ("overflow"))); }`
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error: format argument must be a string literal
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--> $DIR/issue-41731-infinite-macro-println.rs:8:13
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LL | println!(stack!($overflow))
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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...
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LL | stack!("overflow");
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| ------------------ in this macro invocation
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= note: this error originates in the macro `println` which comes from the expansion of the macro `stack` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: you might be missing a string literal to format with
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LL | println!("{}", stack!($overflow))
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| +++++
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error: aborting due to 2 previous errors
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