22 lines
432 B
Rust
22 lines
432 B
Rust
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// run-fail
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// check-run-results
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// exec-env:RUST_BACKTRACE=0
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// Test that we format the panic message only once.
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// Regression test for https://github.com/rust-lang/rust/issues/110717
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use std::fmt;
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struct PrintOnFmt;
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impl fmt::Display for PrintOnFmt {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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eprintln!("fmt");
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f.write_str("PrintOnFmt")
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}
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}
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fn main() {
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panic!("{}", PrintOnFmt)
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}
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