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-rw-r--r--src/test/ui/span/issue-24805-dropck-trait-has-items.rs57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/test/ui/span/issue-24805-dropck-trait-has-items.rs b/src/test/ui/span/issue-24805-dropck-trait-has-items.rs
new file mode 100644
index 000000000..b5c410cd3
--- /dev/null
+++ b/src/test/ui/span/issue-24805-dropck-trait-has-items.rs
@@ -0,0 +1,57 @@
+// Check that traits with various kinds of associated items cause
+// dropck to inject extra region constraints.
+
+#![allow(non_camel_case_types)]
+
+trait HasSelfMethod { fn m1(&self) { } }
+trait HasMethodWithSelfArg { fn m2(x: &Self) { } }
+trait HasType { type Something; }
+
+impl HasSelfMethod for i32 { }
+impl HasMethodWithSelfArg for i32 { }
+impl HasType for i32 { type Something = (); }
+
+impl<'a,T> HasSelfMethod for &'a T { }
+impl<'a,T> HasMethodWithSelfArg for &'a T { }
+impl<'a,T> HasType for &'a T { type Something = (); }
+
+// e.g., `impl_drop!(Send, D_Send)` expands to:
+// ```rust
+// struct D_Send<T:Send>(T);
+// impl<T:Send> Drop for D_Send<T> { fn drop(&mut self) { } }
+// ```
+macro_rules! impl_drop {
+ ($Bound:ident, $Id:ident) => {
+ struct $Id<T:$Bound>(T);
+ impl <T:$Bound> Drop for $Id<T> { fn drop(&mut self) { } }
+ }
+}
+
+impl_drop!{HasSelfMethod, D_HasSelfMethod}
+impl_drop!{HasMethodWithSelfArg, D_HasMethodWithSelfArg}
+impl_drop!{HasType, D_HasType}
+
+fn f_sm() {
+ let (_d, d1);
+ d1 = D_HasSelfMethod(1);
+ _d = D_HasSelfMethod(&d1);
+}
+//~^^ ERROR `d1` does not live long enough
+fn f_mwsa() {
+ let (_d, d1);
+ d1 = D_HasMethodWithSelfArg(1);
+ _d = D_HasMethodWithSelfArg(&d1);
+}
+//~^^ ERROR `d1` does not live long enough
+fn f_t() {
+ let (_d, d1);
+ d1 = D_HasType(1);
+ _d = D_HasType(&d1);
+}
+//~^^ ERROR `d1` does not live long enough
+
+fn main() {
+ f_sm();
+ f_mwsa();
+ f_t();
+}