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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/traits/issue-104322.rs | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/test/ui/traits/issue-104322.rs b/src/test/ui/traits/issue-104322.rs new file mode 100644 index 000000000..dcc27f1f0 --- /dev/null +++ b/src/test/ui/traits/issue-104322.rs @@ -0,0 +1,80 @@ +// build-pass +// +// Tests that overflows do not occur in certain situations +// related to generic diesel code + +use mini_diesel::*; + +pub trait HandleDelete<K> {} + +pub fn handle_delete<D, R>() +where + R: HasTable, + R::Table: HandleDelete<D> + 'static, +{ +} + +impl<K, T> HandleDelete<K> for T +where + T: Table + HasTable<Table = T> + 'static, + K: 'static, + &'static K: Identifiable<Table = T>, + T::PrimaryKey: EqAll<<&'static K as Identifiable>::Id>, + T::Query: FilterDsl<<T::PrimaryKey as EqAll<<&'static K as Identifiable>::Id>>::Output>, + Filter<T::Query, <T::PrimaryKey as EqAll<<&'static K as Identifiable>::Id>>::Output>: + IntoUpdateTarget<Table = T>, +{ +} + +mod mini_diesel { + pub trait HasTable { + type Table: Table; + } + + pub trait Identifiable: HasTable { + type Id; + } + + pub trait EqAll<Rhs> { + type Output; + } + + pub trait IntoUpdateTarget: HasTable { + type WhereClause; + } + + pub trait Query { + type SqlType; + } + + pub trait AsQuery { + type Query: Query; + } + impl<T: Query> AsQuery for T { + type Query = Self; + } + + pub trait FilterDsl<Predicate> { + type Output; + } + + impl<T, Predicate> FilterDsl<Predicate> for T + where + T: Table, + T::Query: FilterDsl<Predicate>, + { + type Output = Filter<T::Query, Predicate>; + } + + pub trait QuerySource { + type FromClause; + } + + pub trait Table: QuerySource + AsQuery + Sized { + type PrimaryKey; + } + + pub type Filter<Source, Predicate> = <Source as FilterDsl<Predicate>>::Output; +} + +fn main() {} |