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#[cfg_attr] //~ ERROR malformed `cfg_attr` attribute
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struct S1;
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#[cfg_attr = ""] //~ ERROR malformed `cfg_attr` attribute
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struct S2;
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#[derive] //~ ERROR malformed `derive` attribute
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struct S3;
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#[derive = ""] //~ ERROR malformed `derive` attribute
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struct S4;
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fn main() {}
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