src/test/ui/fmt/format-concat-span.rs

   1 // If the format string is another macro invocation, rustc would previously
   2 // compute nonsensical spans, such as:
   3 //
   4 //   error: invalid format string: unmatched `}` found
   5 //    --> test.rs:2:17
   6 //     |
   7 //   2 |     format!(concat!("abc}"));
   8 //     |                 ^ unmatched `}` in format string
   9 //
  10 // This test checks that this behavior has been fixed.
  11
  12 fn main() {
  13     format!(concat!("abc}"));
  14     //~^ ERROR: invalid format string: unmatched `}` found
  15 }