38 lines
739 B
Rust
38 lines
739 B
Rust
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//@ compile-flags: -Zfmt-debug=none
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//@ run-pass
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#![feature(fmt_debug)]
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#![allow(dead_code)]
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#![allow(unused)]
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#[derive(Debug)]
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struct Foo {
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bar: u32,
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}
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#[derive(Debug)]
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enum Baz {
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Quz,
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}
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#[cfg(fmt_debug = "full")]
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compile_error!("nope");
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#[cfg(fmt_debug = "none")]
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struct Custom;
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impl std::fmt::Debug for Custom {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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f.write_str("custom_fmt")
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}
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}
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fn main() {
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let c = Custom;
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let s = format!("Debug is '{:?}', '{:#?}', and '{c:?}'", Foo { bar: 1 }, Baz::Quz);
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assert_eq!("Debug is '', '', and ''", s);
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let f = 3.0;
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let s = format_args!("{:?}x{:#?}y{f:?}", 1234, "can't debug this").to_string();
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assert_eq!("xy", s);
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}
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