Fix detection of recursive structs.

2 files changed, 30 insertions, 0 deletions

diff --git a/test/libsolidity/syntaxTests/structs/recursion/multi_struct_composition.sol b/test/libsolidity/syntaxTests/structs/recursion/multi_struct_composition.sol
new file mode 100644
index 00000000..9a1c22f1
--- /dev/null
+++ b/test/libsolidity/syntaxTests/structs/recursion/multi_struct_composition.sol
@@ -0,0 +1,15 @@
+pragma experimental ABIEncoderV2;
+
+contract C {
+  struct T { U u; V v; }
+
+  struct U { W w; }
+
+  struct V { W w; }
+
+  struct W { uint x; }
+
+  function f(T) public pure { }
+}
+// ----
+// Warning: Experimental features are turned on. Do not use experimental features on live deployments.
diff --git a/test/libsolidity/syntaxTests/structs/recursion/parallel_structs.sol b/test/libsolidity/syntaxTests/structs/recursion/parallel_structs.sol
new file mode 100644
index 00000000..d4ad088d
--- /dev/null
+++ b/test/libsolidity/syntaxTests/structs/recursion/parallel_structs.sol
@@ -0,0 +1,15 @@
+pragma experimental ABIEncoderV2;
+
+contract TestContract
+{
+    struct SubStruct {
+        uint256 id;
+    }
+    struct TestStruct {
+        SubStruct subStruct1;
+        SubStruct subStruct2;
+    }
+    function addTestStruct(TestStruct) public pure {}
+}
+// ----
+// Warning: Experimental features are turned on. Do not use experimental features on live deployments.