1 files changed, 16 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-38954.stderr b/src/test/ui/issues/issue-38954.stderr
new file mode 100644
index 000000000..ab15bb1af
--- /dev/null
+++ b/src/test/ui/issues/issue-38954.stderr
@@ -0,0 +1,16 @@
+error[E0277]: the size for values of type `str` cannot be known at compilation time
+  --> $DIR/issue-38954.rs:1:10
+   |
+LL | fn _test(ref _p: str) {}
+   |          ^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: the trait `Sized` is not implemented for `str`
+   = help: unsized fn params are gated as an unstable feature
+help: function arguments must have a statically known size, borrowed types always have a known size
+   |
+LL | fn _test(ref _p: &str) {}
+   |                  +
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.