1 files changed, 75 insertions, 0 deletions
diff --git a/src/test/ui/dropck/reject-specialized-drops-8142.rs b/src/test/ui/dropck/reject-specialized-drops-8142.rs
new file mode 100644
index 000000000..7a3bbe7cb
--- /dev/null
+++ b/src/test/ui/dropck/reject-specialized-drops-8142.rs
@@ -0,0 +1,75 @@
+// Issue 8142: Test that Drop impls cannot be specialized beyond the
+// predicates attached to the type definition itself.
+trait Bound { fn foo(&self) { } }
+struct K<'l1,'l2> { x: &'l1 i8, y: &'l2 u8 }
+struct L<'l1,'l2> { x: &'l1 i8, y: &'l2 u8 }
+struct M<'m> { x: &'m i8 }
+struct N<'n> { x: &'n i8 }
+struct O<To> { x: *const To }
+struct P<Tp> { x: *const Tp }
+struct Q<Tq> { x: *const Tq }
+struct R<Tr> { x: *const Tr }
+struct S<Ts:Bound> { x: *const Ts }
+struct T<'t,Ts:'t> { x: &'t Ts }
+struct U;
+struct V<Tva, Tvb> { x: *const Tva, y: *const Tvb }
+struct W<'l1, 'l2> { x: &'l1 i8, y: &'l2 u8 }
+struct X<const Ca: usize>;
+struct Y<const Ca: usize, const Cb: usize>;
+
+enum Enum<T> { Variant(T) }
+struct TupleStruct<T>(T);
+union Union<T: Copy> { f: T }
+
+impl<'al,'adds_bnd:'al> Drop for K<'al,'adds_bnd> {                        // REJECT
+    //~^ ERROR `Drop` impl requires `'adds_bnd: 'al`
+    fn drop(&mut self) { } }
+
+impl<'al,'adds_bnd>     Drop for L<'al,'adds_bnd> where 'adds_bnd:'al {    // REJECT
+    //~^ ERROR `Drop` impl requires `'adds_bnd: 'al`
+    fn drop(&mut self) { } }
+
+impl<'ml>               Drop for M<'ml>         { fn drop(&mut self) { } } // ACCEPT
+
+impl                    Drop for N<'static>     { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impls cannot be specialized
+
+impl<COkNoBound> Drop for O<COkNoBound> { fn drop(&mut self) { } } // ACCEPT
+
+impl              Drop for P<i8>          { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impls cannot be specialized
+
+impl<AddsBnd:Bound> Drop for Q<AddsBnd> { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impl requires `AddsBnd: Bound`
+
+impl<'rbnd,AddsRBnd:'rbnd> Drop for R<AddsRBnd> { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impl requires `AddsRBnd: 'rbnd`
+
+impl<Bs:Bound>    Drop for S<Bs>          { fn drop(&mut self) { } } // ACCEPT
+
+impl<'t,Bt:'t>    Drop for T<'t,Bt>       { fn drop(&mut self) { } } // ACCEPT
+
+impl              Drop for U              { fn drop(&mut self) { } } // ACCEPT
+
+impl<One>         Drop for V<One,One>     { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impls cannot be specialized
+
+impl<'lw>         Drop for W<'lw,'lw>     { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impls cannot be specialized
+
+impl              Drop for X<3>           { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impls cannot be specialized
+
+impl<const Ca: usize> Drop for Y<Ca, Ca>     { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impls cannot be specialized
+
+impl<AddsBnd:Bound> Drop for Enum<AddsBnd> { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impl requires `AddsBnd: Bound`
+
+impl<AddsBnd:Bound> Drop for TupleStruct<AddsBnd> { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impl requires `AddsBnd: Bound`
+
+impl<AddsBnd:Copy + Bound> Drop for Union<AddsBnd> { fn drop(&mut self) { } } // REJECT
+//~^ ERROR `Drop` impl requires `AddsBnd: Bound`
+
+pub fn main() { }