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error: recursion limit reached while expanding `$crate::format_args!`
  --> $DIR/issue-41731-infinite-macro-print.rs:14:5
   |
LL |     stack!("overflow");
   |     ^^^^^^^^^^^^^^^^^^
   |
   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "10"]` attribute to your crate (`issue_41731_infinite_macro_print`)
   = 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)

note: trace_macro
  --> $DIR/issue-41731-infinite-macro-print.rs:14:5
   |
LL |     stack!("overflow");
   |     ^^^^^^^^^^^^^^^^^^
   |
   = note: expanding `stack! { "overflow" }`
   = note: to `print! (stack! ("overflow")) ;`
   = note: expanding `print! { stack! ("overflow") }`
   = note: to `{ $crate :: io :: _print($crate :: format_args! (stack! ("overflow"))) ; }`
   = note: expanding `stack! { "overflow" }`
   = note: to `print! (stack! ("overflow")) ;`
   = note: expanding `print! { stack! ("overflow") }`
   = note: to `{ $crate :: io :: _print($crate :: format_args! (stack! ("overflow"))) ; }`

error: format argument must be a string literal
  --> $DIR/issue-41731-infinite-macro-print.rs:14:5
   |
LL |     stack!("overflow");
   |     ^^^^^^^^^^^^^^^^^^
   |
   = note: this error originates in the macro `print` which comes from the expansion of the macro `stack` (in Nightly builds, run with -Z macro-backtrace for more info)
help: you might be missing a string literal to format with
   |
LL |             print!("{}", stack!($overflow));
   |                    +++++

error: aborting due to 2 previous errors