1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/const-generics/bad-const-generic-exprs.rs b/tests/ui/const-generics/bad-const-generic-exprs.rs
new file mode 100644
index 00000000000..ca91643edf7
--- /dev/null
+++ b/tests/ui/const-generics/bad-const-generic-exprs.rs
@@ -0,0 +1,22 @@
+struct Wow<const N: usize>;
+
+fn main() {
+    let _: Wow<if true {}>;
+    //~^ ERROR invalid const generic expression
+    //~| HELP expressions must be enclosed in braces to be used as const generic arguments
+    let _: Wow<|| ()>;
+    //~^ ERROR invalid const generic expression
+    //~| HELP expressions must be enclosed in braces to be used as const generic arguments
+    let _: Wow<A.b>;
+    //~^ ERROR expected one of
+    //~| HELP expressions must be enclosed in braces to be used as const generic arguments
+    let _: Wow<A.0>;
+    //~^ ERROR expected one of
+    //~| HELP expressions must be enclosed in braces to be used as const generic arguments
+
+    // FIXME(compiler-errors): This one is still unsatisfying,
+    // and probably a case I could see someone typing by accident..
+    let _: Wow<[12]>;
+    //~^ ERROR expected type, found
+    //~| ERROR type provided when a constant was expected
+}