Add a test for invalid const arguments

2 files changed, 12 insertions, 0 deletions

diff --git a/src/test/ui/const-generics/invalid-constant-in-args.rs b/src/test/ui/const-generics/invalid-constant-in-args.rs
new file mode 100644
index 00000000000..40df237ee72
--- /dev/null
+++ b/src/test/ui/const-generics/invalid-constant-in-args.rs
@@ -0,0 +1,3 @@
+fn main() {
+    let _: Vec<&str, "a"> = Vec::new(); //~ ERROR wrong number of const arguments
+}
diff --git a/src/test/ui/const-generics/invalid-constant-in-args.stderr b/src/test/ui/const-generics/invalid-constant-in-args.stderr
new file mode 100644
index 00000000000..1623f645124
--- /dev/null
+++ b/src/test/ui/const-generics/invalid-constant-in-args.stderr
@@ -0,0 +1,9 @@
+error[E0107]: wrong number of const arguments: expected 0, found 1
+  --> $DIR/invalid-constant-in-args.rs:2:22
+   |
+LL |     let _: Vec<&str, "a"> = Vec::new(); //~ ERROR wrong number of const arguments
+   |                      ^^^ unexpected const argument
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0107`.