1 files changed, 13 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-15756.stderr b/src/test/ui/issues/issue-15756.stderr
new file mode 100644
index 000000000..d9bdc69ad
--- /dev/null
+++ b/src/test/ui/issues/issue-15756.stderr
@@ -0,0 +1,13 @@
+error[E0277]: the size for values of type `[T]` cannot be known at compilation time
+  --> $DIR/issue-15756.rs:7:10
+   |
+LL |     &mut something
+   |          ^^^^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: the trait `Sized` is not implemented for `[T]`
+   = note: all local variables must have a statically known size
+   = help: unsized locals are gated as an unstable feature
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.