diff --git a/src/tools/rustfmt/tests/target/field-representing-types.rs b/src/tools/rustfmt/tests/target/field-representing-types.rs
new file mode 100644
index 0000000000000..a31ccbfb461f2
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/field-representing-types.rs
@@ -0,0 +1,2 @@
+type FRT = builtin # field_of(Type, ident);
+type FRT2 = builtin # field_of(Type<A, B>, ident);