[Syntax] Add test cases for fixed round trip failures.
diff --git a/test/Syntax/round_trip_misc.swift b/test/Syntax/round_trip_misc.swift
new file mode 100644
index 0000000..1b78860
--- /dev/null
+++ b/test/Syntax/round_trip_misc.swift
@@ -0,0 +1,30 @@
+// RUN: %round-trip-syntax-test --swift-syntax-test %swift-syntax-test --file %s
+
+class C {
+ // Erroneous typealias decl.
+ typealias Inner: Foo = Int
+
+ // Implict accessor with attribute at the top of its body.
+ var x: Int {
+ @objc
+ func f() {}
+ }
+}
+
+// Orphan '}' at top level
+}
+
+// Compound name.
+foo(x:y:)()
+
+// Type identifier with erroneous component.
+let a: Int.)
+
+// Type with unknown attribute followed by parentheses.
+typealias b = @foobar() -> Void
+typealias c = @foobar(a) () -> Void
+
+// keypath expressions.
+let d = \.foo
+let e = \.[1]
+let f = \.?.bar
