diff --git a/ChangeLog b/ChangeLog
index b02a142..fab3788 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,23 @@
+Sat May 23 23:31:17 2009  Minero Aoki  <aamine@loveruby.net>
+
+	* net/loveruby/cflat/compiler/IRGenerator.java: refactoring: use
+	  reverse(node.args) instead of ListIterator.
+
+	* net/loveruby/cflat/sysdep/x86/CodeGenerator.java: ditto.
+
+	* net/loveruby/cflat/utils/ListUtils.java: new utility class.
+
+	* net/loveruby/cflat/ast/FuncallNode.java: remove #finalArgs.
+
+	* net/loveruby/cflat/ir/Call.java: ditto.
+
+	* net/loveruby/cflat/ast/FuncallNode.java: refactoring: rename
+	  method: arguments -> args.
+
+	* net/loveruby/cflat/compiler/Visitor.java: follow it.
+
+	* net/loveruby/cflat/compiler/TypeChecker.java: ditto.
+
 Sat May 23 22:31:06 2009  Minero Aoki  <aamine@loveruby.net>
 
 	* net/loveruby/cflat/parser/Parser.jj: now NULL is not a reserved
diff --git a/net/loveruby/cflat/ast/FuncallNode.java b/net/loveruby/cflat/ast/FuncallNode.java
index 2cbbe58..0917baa 100644
--- a/net/loveruby/cflat/ast/FuncallNode.java
+++ b/net/loveruby/cflat/ast/FuncallNode.java
@@ -5,11 +5,11 @@ import java.util.*;
 
 public class FuncallNode extends ExprNode {
     protected ExprNode expr;
-    protected List<ExprNode> arguments;
+    protected List<ExprNode> args;
 
-    public FuncallNode(ExprNode expr, List<ExprNode> arguments) {
+    public FuncallNode(ExprNode expr, List<ExprNode> args) {
         this.expr = expr;
-        this.arguments = arguments;
+        this.args = args;
     }
 
     public ExprNode expr() {
@@ -38,20 +38,16 @@ public class FuncallNode extends ExprNode {
     }
 
     public long numArgs() {
-        return arguments.size();
+        return args.size();
     }
 
-    public List<ExprNode> arguments() {
-        return arguments;
+    public List<ExprNode> args() {
+        return args;
     }
 
     // called from TypeChecker
     public void replaceArgs(List<ExprNode> args) {
-        this.arguments = args;
-    }
-
-    public ListIterator<ExprNode> finalArg() {
-        return arguments.listIterator(arguments.size());
+        this.args = args;
     }
 
     public Location location() {
@@ -60,7 +56,7 @@ public class FuncallNode extends ExprNode {
 
     protected void _dump(Dumper d) {
         d.printMember("expr", expr);
-        d.printNodeList("arguments", arguments);
+        d.printNodeList("args", args);
     }
 
     public <S,E> E accept(ASTVisitor<S,E> visitor) {
diff --git a/net/loveruby/cflat/compiler/IRGenerator.java b/net/loveruby/cflat/compiler/IRGenerator.java
index 34aaca7..13a5cea 100644
--- a/net/loveruby/cflat/compiler/IRGenerator.java
+++ b/net/loveruby/cflat/compiler/IRGenerator.java
@@ -6,6 +6,7 @@ import net.loveruby.cflat.type.TypeTable;
 import net.loveruby.cflat.ir.*;
 import net.loveruby.cflat.asm.Label;
 import net.loveruby.cflat.utils.ErrorHandler;
+import net.loveruby.cflat.utils.ListUtils;
 import net.loveruby.cflat.exception.*;
 import java.util.*;
 
@@ -554,30 +555,25 @@ class IRGenerator implements ASTVisitor<Void, Expr> {
     }
     // #@@}
 
+    // #@@range/Funcall{
     public Expr visit(FuncallNode node) {
-        List<Expr> newArgs = new ArrayList<Expr>();
-        ListIterator<ExprNode> args = node.finalArg();
-        while (args.hasPrevious()) {
-            newArgs.add(0, transformExpr(args.previous()));
+        List<Expr> args = new ArrayList<Expr>();
+        for (ExprNode arg : ListUtils.reverse(node.args())) {
+            args.add(0, transformExpr(arg));
         }
+        Expr call = new Call(asmType(node.type()),
+                transformExpr(node.expr()), args);
         if (isStatement()) {
-            stmts.add(
-                    new ExprStmt(node.location(),
-                            new Call(asmType(node.type()),
-                                        transformExpr(node.expr()),
-                                        newArgs)));
+            stmts.add(new ExprStmt(node.location(), call));
             return null;
         }
         else {
             DefinedVariable tmp = tmpVar(node.type());
-            assign(node.location(),
-                    ref(tmp),
-                    new Call(asmType(node.type()),
-                            transformExpr(node.expr()),
-                            newArgs));
+            assign(node.location(), ref(tmp), call);
             return ref(tmp);
         }
     }
+    // #@@}
 
     //
     // Expressions (no side effects)
diff --git a/net/loveruby/cflat/compiler/TypeChecker.java b/net/loveruby/cflat/compiler/TypeChecker.java
index f2843b6..51584ea 100644
--- a/net/loveruby/cflat/compiler/TypeChecker.java
+++ b/net/loveruby/cflat/compiler/TypeChecker.java
@@ -460,7 +460,7 @@ class TypeChecker extends Visitor {
             error(node, "wrong number of argments: " + node.numArgs());
             return null;
         }
-        Iterator<ExprNode> args = node.arguments().iterator();
+        Iterator<ExprNode> args = node.args().iterator();
         List<ExprNode> newArgs = new ArrayList<ExprNode>();
         // mandatory args
         for (Type param : type.paramTypes()) {
diff --git a/net/loveruby/cflat/compiler/Visitor.java b/net/loveruby/cflat/compiler/Visitor.java
index 5b2bdc5..f202b45 100644
--- a/net/loveruby/cflat/compiler/Visitor.java
+++ b/net/loveruby/cflat/compiler/Visitor.java
@@ -172,7 +172,7 @@ abstract public class Visitor implements ASTVisitor<Void, Void> {
 
     public Void visit(FuncallNode node) {
         visitExpr(node.expr());
-        visitExprs(node.arguments());
+        visitExprs(node.args());
         return null;
     }
 
diff --git a/net/loveruby/cflat/ir/Call.java b/net/loveruby/cflat/ir/Call.java
index d865ce2..c963f10 100644
--- a/net/loveruby/cflat/ir/Call.java
+++ b/net/loveruby/cflat/ir/Call.java
@@ -3,7 +3,6 @@ import net.loveruby.cflat.entity.Function;
 import net.loveruby.cflat.entity.Entity;
 import net.loveruby.cflat.asm.Type;
 import java.util.List;
-import java.util.ListIterator;
 
 public class Call extends Expr {
     private Expr expr;
@@ -16,16 +15,12 @@ public class Call extends Expr {
     }
 
     public Expr expr() { return expr; }
-    public List<Expr> arguments() { return args; }
+    public List<Expr> args() { return args; }
 
     public long numArgs() {
         return args.size();
     }
 
-    public ListIterator<Expr> finalArg() {
-        return args.listIterator(args.size());
-    }
-
     /** Returns true if this funcall is NOT a function pointer call. */
     public boolean isStaticCall() {
         return (expr.getEntityForce() instanceof Function);
diff --git a/net/loveruby/cflat/sysdep/x86/CodeGenerator.java b/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
index cefb6ad..980da8c 100644
--- a/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
+++ b/net/loveruby/cflat/sysdep/x86/CodeGenerator.java
@@ -5,6 +5,7 @@ import net.loveruby.cflat.entity.*;
 import net.loveruby.cflat.asm.*;
 import net.loveruby.cflat.ast.Location;
 import net.loveruby.cflat.utils.AsmUtils;
+import net.loveruby.cflat.utils.ListUtils;
 import net.loveruby.cflat.utils.ErrorHandler;
 import java.util.*;
 
@@ -639,28 +640,22 @@ public class CodeGenerator
     /**
      * Implements cdecl function call:
      *    * All arguments are on stack.
-     *    * Rewind stack by caller.
+     *    * Caller rewinds stack pointer.
      */
     // #@@range/compile_Funcall{
     public Void visit(Call node) {
-        // compile function arguments from right to left.
-        ListIterator<Expr> args = node.finalArg();
-        while (args.hasPrevious()) {
-            compile(args.previous());
+        for (Expr arg : ListUtils.reverse(node.args())) {
+            compile(arg);
             as.push(ax());
         }
-        // call
         if (node.isStaticCall()) {
-            // call via function name
             as.call(node.function().callingSymbol());
         }
         else {
-            // call via pointer
             compile(node.expr());
             as.callAbsolute(ax());
         }
-        // rewind stack
-        // >4 bytes arguments are not supported.
+        // rewind stack; >4 bytes arguments are not supported.
         rewindStack(as, stackSizeFromWordNum(node.numArgs()));
         return null;
     }
diff --git a/net/loveruby/cflat/utils/ListUtils.java b/net/loveruby/cflat/utils/ListUtils.java
new file mode 100644
index 0000000..ff16d74
--- /dev/null
+++ b/net/loveruby/cflat/utils/ListUtils.java
@@ -0,0 +1,15 @@
+package net.loveruby.cflat.utils;
+import java.util.List;
+import java.util.ListIterator;
+import java.util.ArrayList;
+
+public abstract class ListUtils {
+    static public <T> List<T> reverse(List<T> list) {
+        List<T> result = new ArrayList<T>(list.size());
+        ListIterator<T> it = list.listIterator(list.size());
+        while (it.hasPrevious()) {
+            result.add(it.previous());
+        }
+        return result;
+    }
+}
diff --git a/unit/TestAll.java b/unit/TestAll.java
index 004e989..9488c6b 100644
--- a/unit/TestAll.java
+++ b/unit/TestAll.java
@@ -6,7 +6,8 @@ import org.junit.runners.Suite.*;
 @RunWith(Suite.class)
 @SuiteClasses({
     TestCursor.class,
-    TestTextUtils.class
+    TestTextUtils.class,
+    TestListUtils.class
 })
 public class TestAll {
     static public void main(String[] args) {
diff --git a/unit/TestListUtils.java b/unit/TestListUtils.java
new file mode 100644
index 0000000..fc7c40d
--- /dev/null
+++ b/unit/TestListUtils.java
@@ -0,0 +1,27 @@
+import org.junit.*;
+import org.junit.runner.*;
+import static org.junit.Assert.*;
+import java.util.List;
+import java.util.ArrayList;
+import static net.loveruby.cflat.utils.ListUtils.*;
+
+public class TestListUtils {
+    static public void main(String[] args) {
+        JUnitCore.main(TestListUtils.class.getName());
+    }
+
+    @Test public void test_reverse() {
+        assertEquals("reverse #1", list(), reverse(list()));
+        assertEquals("reverse #2", list(1), reverse(list(1)));
+        assertEquals("reverse #3", list(2,1), reverse(list(1,2)));
+        assertEquals("reverse #4", list(3,2,1), reverse(list(1,2,3)));
+    }
+
+    private List<Integer> list(int... values) {
+        List<Integer> result = new ArrayList<Integer>();
+        for (int i : values) {
+            result.add(i);
+        }
+        return result;
+    }
+}
diff --git a/unit/TestTextUtils.java b/unit/TestTextUtils.java
index 1c3c97e..5debe2f 100644
--- a/unit/TestTextUtils.java
+++ b/unit/TestTextUtils.java
@@ -10,8 +10,19 @@ public class TestTextUtils {
 
     @Test public void test_dumpString() {
         assertEquals("dumpString #1", "\"\"", dumpString(""));
+        assertEquals("dumpString #2", "\"x\"", dumpString("x"));
+        assertEquals("dumpString #3", "\"xx\"", dumpString("xx"));
+        assertEquals("dumpString #4", "\"x\\\"x\"", dumpString("x\"x"));
+        assertEquals("dumpString #5", "\"x\\nx\"", dumpString("x\nx"));
     }
 
     @Test public void test_isPrintable() {
+        assertEquals(true, isPrintable('a'));
+        assertEquals(true, isPrintable('A'));
+        assertEquals(true, isPrintable(' '));
+        assertEquals(false, isPrintable('\t'));
+        assertEquals(false, isPrintable('\r'));
+        assertEquals(false, isPrintable('\n'));
+        assertEquals(false, isPrintable('\0'));
     }
 }