diff --git a/lib/CppInterOp/Compatibility.h b/lib/CppInterOp/Compatibility.h
index ddee92574..5552e60ba 100644
--- a/lib/CppInterOp/Compatibility.h
+++ b/lib/CppInterOp/Compatibility.h
@@ -354,7 +354,6 @@ inline void codeComplete(std::vector<std::string>& Results,
   }
 
   std::vector<std::string> results;
-  std::vector<std::string> Comps;
   clang::CompilerInstance* MainCI = (*Interp)->getCompilerInstance();
   auto CC = clang::ReplCodeCompleter();
   CC.codeComplete(MainCI, code, complete_line, complete_column,
diff --git a/unittests/CppInterOp/FunctionReflectionTest.cpp b/unittests/CppInterOp/FunctionReflectionTest.cpp
index 355b0666b..3cb249e66 100644
--- a/unittests/CppInterOp/FunctionReflectionTest.cpp
+++ b/unittests/CppInterOp/FunctionReflectionTest.cpp
@@ -562,7 +562,7 @@ TEST(FunctionReflectionTest, GetFunctionRequiredArgs) {
 }
 
 TEST(FunctionReflectionTest, GetFunctionArgType) {
-  std::vector<Decl*> Decls, SubDecls;
+  std::vector<Decl*> Decls;
   std::string code = R"(
     void f1(int i, double d, long l, char ch) {}
     void f2(const int i, double d[], long *l, char ch[4]) {}
@@ -582,7 +582,7 @@ TEST(FunctionReflectionTest, GetFunctionArgType) {
 }
 
 TEST(FunctionReflectionTest, GetFunctionSignature) {
-  std::vector<Decl*> Decls, SubDecls;
+  std::vector<Decl*> Decls;
   std::string code = R"(
     class C {
       void f(int i, double d, long l = 0, char ch = 'a') {}
@@ -626,7 +626,8 @@ TEST(FunctionReflectionTest, GetFunctionSignature) {
 }
 
 TEST(FunctionReflectionTest, IsTemplatedFunction) {
-  std::vector<Decl*> Decls, SubDeclsC1, SubDeclsC2;
+  std::vector<Decl*> Decls;
+  std::vector<Decl*> SubDeclsC1;
   std::string code = R"(
     void f1(int a) {}
 
@@ -1448,7 +1449,7 @@ TEST(FunctionReflectionTest, GetFunctionAddress) {
 #ifdef _WIN32
   GTEST_SKIP() << "Disabled on Windows. Needs fixing.";
 #endif
-  std::vector<Decl*> Decls, SubDecls;
+  std::vector<Decl*> Decls;
   std::string code = "int f1(int i) { return i * i; }";
   std::vector<const char*> interpreter_args = {"-include", "new"};
 
@@ -2132,7 +2133,7 @@ TEST(FunctionReflectionTest, IsConstMethod) {
 }
 
 TEST(FunctionReflectionTest, GetFunctionArgName) {
-  std::vector<Decl*> Decls, SubDecls;
+  std::vector<Decl*> Decls;
   std::string code = R"(
     void f1(int i, double d, long l, char ch) {}
     void f2(const int i, double d[], long *l, char ch[4]) {}
@@ -2172,7 +2173,7 @@ TEST(FunctionReflectionTest, GetFunctionArgName) {
 }
 
 TEST(FunctionReflectionTest, GetFunctionArgDefault) {
-  std::vector<Decl*> Decls, SubDecls;
+  std::vector<Decl*> Decls;
   std::string code = R"(
     void f1(int i, double d = 4.0, const char *s = "default", char ch = 'c') {}
     void f2(float i = 0.0, double d = 3.123, long m = 34126) {}
diff --git a/unittests/CppInterOp/ScopeReflectionTest.cpp b/unittests/CppInterOp/ScopeReflectionTest.cpp
index 068a8a731..53b2ee894 100644
--- a/unittests/CppInterOp/ScopeReflectionTest.cpp
+++ b/unittests/CppInterOp/ScopeReflectionTest.cpp
@@ -191,7 +191,6 @@ TEST(ScopeReflectionTest, IsBuiltin) {
   EXPECT_TRUE(Cpp::IsBuiltin(C.getComplexType(C.Float128Ty).getAsOpaquePtr()));
 
   // std::complex
-  std::vector<Decl*> Decls;
   Interp->declare("#include <complex>");
   Sema &S = Interp->getCI()->getSema();
   auto lookup = S.getStdNamespace()->lookup(&C.Idents.get("complex"));
diff --git a/unittests/CppInterOp/VariableReflectionTest.cpp b/unittests/CppInterOp/VariableReflectionTest.cpp
index f6abfebe0..e6bde0e8d 100644
--- a/unittests/CppInterOp/VariableReflectionTest.cpp
+++ b/unittests/CppInterOp/VariableReflectionTest.cpp
@@ -534,7 +534,7 @@ TEST(VariableReflectionTest, IsConstVariable) {
 }
 
 TEST(VariableReflectionTest, DISABLED_GetArrayDimensions) {
-  std::vector<Decl *> Decls, SubDecls;
+  std::vector<Decl *> Decls;
   std::string code =  R"(
     int a;
     int b[1];