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-rw-r--r--src/test/ui/variance/variance-issue-20533.rs43
1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/ui/variance/variance-issue-20533.rs b/src/test/ui/variance/variance-issue-20533.rs
new file mode 100644
index 000000000..a2459f873
--- /dev/null
+++ b/src/test/ui/variance/variance-issue-20533.rs
@@ -0,0 +1,43 @@
+// Regression test for issue #20533. At some point, only 1 out of the
+// 3 errors below were being reported.
+
+use std::marker::PhantomData;
+
+fn foo<'a, T>(_x: &'a T) -> PhantomData<&'a ()> {
+ PhantomData
+}
+
+struct Wrap<T>(T);
+
+fn bar<'a, T>(_x: &'a T) -> Wrap<PhantomData<&'a ()>> {
+ Wrap(PhantomData)
+}
+
+struct Baked<'a>(PhantomData<&'a ()>);
+
+fn baz<'a, T>(_x: &'a T) -> Baked<'a> {
+ Baked(PhantomData)
+}
+
+struct AffineU32(u32);
+
+fn main() {
+ {
+ let a = AffineU32(1);
+ let x = foo(&a);
+ drop(a); //~ ERROR cannot move out of `a`
+ drop(x);
+ }
+ {
+ let a = AffineU32(1);
+ let x = bar(&a);
+ drop(a); //~ ERROR cannot move out of `a`
+ drop(x);
+ }
+ {
+ let a = AffineU32(1);
+ let x = baz(&a);
+ drop(a); //~ ERROR cannot move out of `a`
+ drop(x);
+ }
+}