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Fix ICE from #105101
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@ -146,7 +146,7 @@ fn extract_default_variant<'a>(
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let suggestion = default_variants
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.iter()
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.filter_map(|v| {
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if v.ident == variant.ident {
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if v.span == variant.span {
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None
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} else {
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Some((cx.sess.find_by_name(&v.attrs, kw::Default)?.span, String::new()))
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9
src/test/ui/deriving/issue-105101.rs
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9
src/test/ui/deriving/issue-105101.rs
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@ -0,0 +1,9 @@
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// compile-flags: --crate-type=lib
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#[derive(Default)] //~ ERROR multiple declared defaults
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enum E {
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#[default]
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A,
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#[default]
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A, //~ ERROR defined multiple times
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}
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29
src/test/ui/deriving/issue-105101.stderr
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29
src/test/ui/deriving/issue-105101.stderr
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@ -0,0 +1,29 @@
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error: multiple declared defaults
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--> $DIR/issue-105101.rs:3:10
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LL | #[derive(Default)]
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| ^^^^^^^
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...
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LL | A,
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| - first default
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LL | #[default]
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LL | A,
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| - additional default
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= note: only one variant can be default
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= note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info)
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error[E0428]: the name `A` is defined multiple times
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--> $DIR/issue-105101.rs:8:5
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LL | A,
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| - previous definition of the type `A` here
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LL | #[default]
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LL | A,
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| ^ `A` redefined here
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= note: `A` must be defined only once in the type namespace of this enum
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0428`.
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