1 files changed, 31 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0046.md b/compiler/rustc_error_codes/src/error_codes/E0046.md
new file mode 100644
index 000000000..d8f95330c
--- /dev/null
+++ b/compiler/rustc_error_codes/src/error_codes/E0046.md
@@ -0,0 +1,31 @@
+Items are missing in a trait implementation.
+
+Erroneous code example:
+
+```compile_fail,E0046
+trait Foo {
+    fn foo();
+}
+
+struct Bar;
+
+impl Foo for Bar {}
+// error: not all trait items implemented, missing: `foo`
+```
+
+When trying to make some type implement a trait `Foo`, you must, at minimum,
+provide implementations for all of `Foo`'s required methods (meaning the
+methods that do not have default implementations), as well as any required
+trait items like associated types or constants. Example:
+
+```
+trait Foo {
+    fn foo();
+}
+
+struct Bar;
+
+impl Foo for Bar {
+    fn foo() {} // ok!
+}
+```