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The test cases for issue 41731 are about infinite macro recursion that incorporates `print!` and `println!`. However, they also included trailing semicolons despite expanding to expressions; that isn't what these particular test cases are designed to test. Eliminate the trailing semicolons, to simplify future work on removing this special case. Every *other* macro that expands to a semicolon in an expression is a test case for that specifically.
39 lines
1.6 KiB
Plaintext
39 lines
1.6 KiB
Plaintext
error: recursion limit reached while expanding `$crate::format_args!`
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--> $DIR/issue-41731-infinite-macro-print.rs:14:5
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LL | stack!("overflow");
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| ^^^^^^^^^^^^^^^^^^
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= help: consider increasing the recursion limit by adding a `#![recursion_limit = "10"]` attribute to your crate (`issue_41731_infinite_macro_print`)
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= note: this error originates in the macro `print` 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-print.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 `print! (stack! ("overflow"))`
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= note: expanding `print! { stack! ("overflow") }`
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= note: to `{ $crate :: io :: _print($crate :: format_args! (stack! ("overflow"))); }`
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= note: expanding `stack! { "overflow" }`
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= note: to `print! (stack! ("overflow"))`
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= note: expanding `print! { stack! ("overflow") }`
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= note: to `{ $crate :: io :: _print($crate :: format_args! (stack! ("overflow"))); }`
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error: format argument must be a string literal
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--> $DIR/issue-41731-infinite-macro-print.rs:14:5
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LL | stack!("overflow");
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| ^^^^^^^^^^^^^^^^^^
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= note: this error originates in the macro `print` which comes from the expansion of the macro `stack` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: you might be missing a string literal to format with
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LL | print!("{}", stack!($overflow))
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| +++++
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error: aborting due to 2 previous errors
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