Address review comments
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@ -251,7 +251,7 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
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// Modules, prelude, and resolution:
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ungated!(path, Normal, template!(NameValueStr: "file")),
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ungated!(no_std, CrateLevel, template!(Word)),
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ungated!(no_implicit_prelude, CrateLevel, template!(Word)),
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ungated!(no_implicit_prelude, Normal, template!(Word)),
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ungated!(non_exhaustive, Normal, template!(Word)),
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// Runtime
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@ -130,6 +130,12 @@ impl CheckAttrVisitor<'tcx> {
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sym::ignore | sym::should_panic | sym::proc_macro_derive => {
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self.check_generic_attr(hir_id, attr, target, &[Target::Fn])
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}
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sym::automatically_derived => {
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self.check_generic_attr(hir_id, attr, target, &[Target::Impl])
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}
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sym::no_implicit_prelude => {
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self.check_generic_attr(hir_id, attr, target, &[Target::Mod])
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}
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_ => {}
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}
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@ -290,7 +296,6 @@ impl CheckAttrVisitor<'tcx> {
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b.push_str(&(allowed_target.to_string() + "s"));
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b
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});
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//let supported_names = allowed_targets.iter().fold(String::new(), |msg, t| msg + ", " + &t.to_string());
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self.tcx.struct_span_lint_hir(UNUSED_ATTRIBUTES, hir_id, attr.span, |lint| {
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lint.build(&format!("`#[{name}]` only has an effect on {}", supported_names))
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.emit();
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@ -275,18 +275,20 @@ mod path {
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//~^ WARN `#[path]` only has an effect
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}
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// Don't warn on `automatically_derived` - a custom derive
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// could reasonally annotate anything that it emits with
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// this attribute
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#[automatically_derived]
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//~^ WARN `#[automatically_derived]` only has an effect
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mod automatically_derived {
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mod inner { #![automatically_derived] }
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//~^ WARN `#[automatically_derived]
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#[automatically_derived] fn f() { }
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//~^ WARN `#[automatically_derived]
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#[automatically_derived] struct S;
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//~^ WARN `#[automatically_derived]
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#[automatically_derived] type T = S;
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//~^ WARN `#[automatically_derived]
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#[automatically_derived] impl S { }
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}
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@ -368,22 +370,20 @@ mod ignore {
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}
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#[no_implicit_prelude]
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//~^ WARN crate-level attribute
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mod no_implicit_prelude {
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mod inner { #![no_implicit_prelude] }
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//~^ WARN crate-level attribute
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#[no_implicit_prelude] fn f() { }
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//~^ WARN crate-level attribute
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//~^ WARN `#[no_implicit_prelude]` only has an effect
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#[no_implicit_prelude] struct S;
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//~^ WARN crate-level attribute
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//~^ WARN `#[no_implicit_prelude]` only has an effect
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#[no_implicit_prelude] type T = S;
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//~^ WARN crate-level attribute
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//~^ WARN `#[no_implicit_prelude]` only has an effect
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#[no_implicit_prelude] impl S { }
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//~^ WARN crate-level attribute
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//~^ WARN `#[no_implicit_prelude]` only has an effect
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}
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#[reexport_test_harness_main = "2900"]
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