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Reject transparent attr in field attribute position

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David Tolnay 2020-04-27 15:48:44 -07:00
parent c1ab55293d
commit 85b0944eac
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3 changed files with 18 additions and 0 deletions
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6
impl/src/valid.rs
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@ -163,6 +163,12 @@ fn check_field_attrs(fields: &[Field]) -> Result<()> {
backtrace_field = Some(field);
has_backtrace = true;
}
if let Some(transparent) = field.attrs.transparent {
return Err(Error::new_spanned(
transparent,
"#[error(transparent)] needs to go outside the enum or struct, not on an individual field",
));
}
has_backtrace |= field.is_backtrace();
}
if let (Some(from_field), Some(source_field)) = (from_field, source_field) {