diff --git a/parser.y b/parser.y
index ebba762e..d514d1ec 100644
--- a/parser.y
+++ b/parser.y
@@ -395,6 +395,11 @@ decl: declaration_specifiers init_declarator_list_opt SEMICOLON {
     auto decl_list = std::vector<std::unique_ptr<DeclNode>>{};
     if (std::holds_alternative<std::unique_ptr<Type>>(decl_specifiers)) {
       auto type = std::move(std::get<std::unique_ptr<Type>>(decl_specifiers));
+      if (init_decl_list.empty()) {
+        // A stand-alone type that doesn't declare any identifier, e.g., `int;`.
+        decl_list.push_back(std::make_unique<VarDeclNode>(Loc(@1), "", type->Clone()));
+      }
+
       for (auto& init_decl : init_decl_list) {
         if (init_decl) {
           init_decl->type = ResolveType(type->Clone(), std::move(init_decl->type));
@@ -405,7 +410,13 @@ decl: declaration_specifiers init_declarator_list_opt SEMICOLON {
       }
     } else {
       auto decl = std::move(std::get<std::unique_ptr<DeclNode>>(decl_specifiers));
+      // A record declaration that doesn't declare any identifier, e.g., `struct point {int x, int y};`.
+      if (init_decl_list.empty()) {
+        decl_list.push_back(std::move(decl));
+      }
+
       auto* rec_decl = dynamic_cast<RecordDeclNode*>(decl.get());
+      // Initialize record variable.
       for (auto& init_decl : init_decl_list) {
         if (init_decl) {
           init_decl->type = ResolveType(rec_decl->type->Clone(), std::move(init_decl->type));
diff --git a/test/typecheck/decl.exp b/test/typecheck/decl.exp
index e4cefdc7..70f44130 100644
--- a/test/typecheck/decl.exp
+++ b/test/typecheck/decl.exp
@@ -7,6 +7,7 @@ ProgramNode <1:1>
       DeclStmtNode <3:3>
         VarDeclNode <3:7> j: int
       DeclStmtNode <4:3>
+        VarDeclNode <4:3> : int
       DeclStmtNode <5:3>
         VarDeclNode <5:7> a: int
         VarDeclNode <5:10> b: int
diff --git a/test/typecheck/struct.exp b/test/typecheck/struct.exp
index 09f5c8b7..c5cb2129 100644
--- a/test/typecheck/struct.exp
+++ b/test/typecheck/struct.exp
@@ -2,8 +2,17 @@ ProgramNode <1:1>
   FuncDefNode <1:5> main: int ()
     CompoundStmtNode <1:12>
       DeclStmtNode <2:3>
+        RecordDeclNode <2:10> struct ss definition
       DeclStmtNode <4:3>
+        RecordDeclNode <4:10> struct birth definition
+          FieldNode <5:9> date: int
+          FieldNode <6:9> month: int
+          FieldNode <7:9> year: int
       DeclStmtNode <10:3>
+        RecordDeclNode <10:9> struct definition
+          FieldNode <11:9> quarter: int
+          FieldNode <12:9> dime: int
+          FieldNode <13:9> penny: int
       DeclStmtNode <16:3>
         RecordVarDeclNode <16:16> bd1: struct birth
           InitExprNode <17:5>
diff --git a/test/typecheck/union.exp b/test/typecheck/union.exp
index b0e3343a..c7f09db4 100644
--- a/test/typecheck/union.exp
+++ b/test/typecheck/union.exp
@@ -2,8 +2,19 @@ ProgramNode <1:1>
   FuncDefNode <1:5> main: int ()
     CompoundStmtNode <1:12>
       DeclStmtNode <2:3>
+        RecordDeclNode <2:9> union u definition
       DeclStmtNode <4:3>
+        RecordDeclNode <4:9> union shape definition
+          FieldNode <5:9> square: int
+          FieldNode <6:9> circle: int
+          FieldNode <7:9> triangle: int
       DeclStmtNode <10:3>
+        RecordDeclNode <10:8> union definition
+          FieldNode <11:9> a: int
+          FieldNode <12:9> b: int
+          FieldNode <13:9> c: int
+          FieldNode <14:9> d: int
+          FieldNode <15:9> e: int
       DeclStmtNode <20:3>
         RecordVarDeclNode <20:15> s: union shape
           InitExprNode <20:20>