add test

Author: ludviggunne

test/testsimplifytypedef.cpp

@@ -234,6 +234,7 @@ class TestSimplifyTypedef : public TestFixture {
         TEST_CASE(simplifyTypedef161);
         TEST_CASE(simplifyTypedef162);
         TEST_CASE(simplifyTypedef163);
+        TEST_CASE(simplifyTypedef164);
 
         TEST_CASE(simplifyTypedefFunction1);
         TEST_CASE(simplifyTypedefFunction2); // ticket #1685
@@ -3874,6 +3875,11 @@ class TestSimplifyTypedef : public TestFixture {
         ASSERT_THROW_INTERNAL(tok(code), INTERNAL);
     }
 
+    void simplifyTypedef164() {
+        const char code[] = "typedef struct D{x;}y y;";
+        ASSERT_THROW_INTERNAL(tok(code), INTERNAL);
+    }
+
     void simplifyTypedefFunction1() {
         {
             const char code[] = "typedef void (*my_func)();\n"