1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/dst/dst-rvalue.stderr b/src/test/ui/dst/dst-rvalue.stderr
new file mode 100644
index 000000000..15830636b
--- /dev/null
+++ b/src/test/ui/dst/dst-rvalue.stderr
@@ -0,0 +1,21 @@
+error[E0277]: the size for values of type `str` cannot be known at compilation time
+  --> $DIR/dst-rvalue.rs:6:28
+   |
+LL |     let _x: Box<str> = box *"hello world";
+   |                            ^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: the trait `Sized` is not implemented for `str`
+   = note: the type of a box expression must have a statically known size
+
+error[E0277]: the size for values of type `[isize]` cannot be known at compilation time
+  --> $DIR/dst-rvalue.rs:10:32
+   |
+LL |     let _x: Box<[isize]> = box *array;
+   |                                ^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: the trait `Sized` is not implemented for `[isize]`
+   = note: the type of a box expression must have a statically known size
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.