1 files changed, 60 insertions, 0 deletions
diff --git a/src/test/ui/const-generics/const-arg-in-const-arg.rs b/src/test/ui/const-generics/const-arg-in-const-arg.rs
new file mode 100644
index 000000000..44a4f560a
--- /dev/null
+++ b/src/test/ui/const-generics/const-arg-in-const-arg.rs
@@ -0,0 +1,60 @@
+// revisions: full min
+
+#![cfg_attr(full, feature(generic_const_exprs))]
+#![cfg_attr(full, allow(incomplete_features))]
+
+const fn foo<T>() -> usize { std::mem::size_of::<T>() }
+const fn bar<const N: usize>() -> usize { N }
+const fn faz<'a>(_: &'a ()) -> usize { 13 }
+const fn baz<'a>(_: &'a ()) -> usize where &'a (): Sized { 13 }
+
+struct Foo<const N: usize>;
+fn test<'a, 'b, T, const N: usize>() where &'b (): Sized {
+    let _: [u8; foo::<T>()]; //[min]~ ERROR generic parameters may not
+                             //[full]~^ ERROR unconstrained generic constant
+    let _: [u8; bar::<N>()]; //[min]~ ERROR generic parameters may not
+                             //[min]~^ ERROR unresolved item provided when a constant was expected
+                             //[full]~^^ ERROR unconstrained generic constant
+    let _: [u8; faz::<'a>(&())]; //[min]~ ERROR a non-static lifetime
+                                 //~^ ERROR cannot specify lifetime arguments
+    let _: [u8; baz::<'a>(&())]; //[min]~ ERROR a non-static lifetime
+    let _: [u8; faz::<'b>(&())]; //[min]~ ERROR a non-static lifetime
+                                 //~^ ERROR cannot specify lifetime arguments
+    let _: [u8; baz::<'b>(&())]; //[min]~ ERROR a non-static lifetime
+
+    let _ = [0; foo::<T>()]; //[min]~ ERROR constant expression depends on a generic parameter
+                             //[full]~^ ERROR unconstrained generic constant
+    let _ = [0; bar::<N>()]; //[min]~ ERROR generic parameters may not
+                             //[min]~^ ERROR unresolved item provided when a constant was expected
+                             //[full]~^^ ERROR unconstrained generic constant
+    let _ = [0; faz::<'a>(&())]; //[min]~ ERROR a non-static lifetime
+                                 //~^ ERROR cannot specify lifetime arguments
+    let _ = [0; baz::<'a>(&())]; //[min]~ ERROR a non-static lifetime
+    let _ = [0; faz::<'b>(&())]; //[min]~ ERROR a non-static lifetime
+                                 //~^ ERROR cannot specify lifetime arguments
+    let _ = [0; baz::<'b>(&())]; //[min]~ ERROR a non-static lifetime
+    let _: Foo<{ foo::<T>() }>; //[min]~ ERROR generic parameters may not
+                                //[full]~^ ERROR unconstrained generic constant
+    let _: Foo<{ bar::<N>() }>; //[min]~ ERROR generic parameters may not
+                                //[min]~^ ERROR unresolved item provided when a constant was expected
+                                //[full]~^^ ERROR unconstrained generic constant
+    let _: Foo<{ faz::<'a>(&()) }>; //[min]~ ERROR a non-static lifetime
+                                    //~^ ERROR cannot specify lifetime arguments
+    let _: Foo<{ baz::<'a>(&()) }>; //[min]~ ERROR a non-static lifetime
+    let _: Foo<{ faz::<'b>(&()) }>; //[min]~ ERROR a non-static lifetime
+                                    //~^ ERROR cannot specify lifetime arguments
+    let _: Foo<{ baz::<'b>(&()) }>; //[min]~ ERROR a non-static lifetime
+    let _ = Foo::<{ foo::<T>() }>; //[min]~ ERROR generic parameters may not
+                                   //[full]~^ ERROR unconstrained generic constant
+    let _ = Foo::<{ bar::<N>() }>; //[min]~ ERROR generic parameters may not
+                                   //[min]~^ ERROR unresolved item provided when a constant was expected
+                                   //[full]~^^ ERROR unconstrained generic constant
+    let _ = Foo::<{ faz::<'a>(&()) }>; //[min]~ ERROR a non-static lifetime
+                                       //~^ ERROR cannot specify lifetime arguments
+    let _ = Foo::<{ baz::<'a>(&()) }>; //[min]~ ERROR a non-static lifetime
+    let _ = Foo::<{ faz::<'b>(&()) }>; //[min]~ ERROR a non-static lifetime
+                                       //~^ ERROR cannot specify lifetime arguments
+    let _ = Foo::<{ baz::<'b>(&()) }>; //[min]~ ERROR a non-static lifetime
+}
+
+fn main() {}