56 lines
1.5 KiB
Rust
56 lines
1.5 KiB
Rust
// Parse `cfg_attr` with varying numbers of attributes and trailing commas
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// Completely empty `cfg_attr` input
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#[cfg_attr()] //~ error: malformed `cfg_attr` attribute input
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struct NoConfigurationPredicate;
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// Zero attributes, zero trailing comma (comma manatory here)
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#[cfg_attr(true)] //~ error: expected `,`, found end of `cfg_attr`
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struct A0C0;
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// Zero attributes, one trailing comma
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#[cfg_attr(true,)]
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//~^ WARN `#[cfg_attr]` does not expand to any attributes
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struct A0C1;
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// Zero attributes, two trailing commas
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#[cfg_attr(true,,)] //~ ERROR expected identifier
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struct A0C2;
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// One attribute, no trailing comma
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#[cfg_attr(true, must_use)] // Ok
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struct A1C0;
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// One attribute, one trailing comma
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#[cfg_attr(true, must_use,)] // Ok
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struct A1C1;
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// One attribute, two trailing commas
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#[cfg_attr(true, must_use,,)] //~ ERROR expected identifier
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struct A1C2;
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// Two attributes, no trailing comma
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#[cfg_attr(true, must_use, deprecated)] // Ok
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struct A2C0;
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// Two attributes, one trailing comma
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#[cfg_attr(true, must_use, deprecated,)] // Ok
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struct A2C1;
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// Two attributes, two trailing commas
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#[cfg_attr(true, must_use, deprecated,,)] //~ ERROR expected identifier
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struct A2C2;
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// Wrong delimiter `[`
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#[cfg_attr[true,,]]
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//~^ ERROR wrong `cfg_attr` delimiters
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//~| ERROR expected identifier, found `,`
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struct BracketZero;
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// Wrong delimiter `{`
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#[cfg_attr{true,,}]
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//~^ ERROR wrong `cfg_attr` delimiters
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//~| ERROR expected identifier, found `,`
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struct BraceZero;
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fn main() {}
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