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// If the format string is another macro invocation, rustc would previously
// compute nonsensical spans, such as:
//
// error: invalid format string: unmatched `}` found
// --> test.rs:2:17
// |
// 2 | format!(concat!("abc}"));
// | ^ unmatched `}` in format string
//
// This test checks that this behavior has been fixed.
fn main() {
format!(concat!("abc}"));
//~^ ERROR: invalid format string: unmatched `}` found
}
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