joni.diff

diff --git a/src/org/joni/ByteCodeMachine.java b/src/org/joni/ByteCodeMachine.java
index 218d0e8..980d4f0 100644
--- a/src/org/joni/ByteCodeMachine.java
+++ b/src/org/joni/ByteCodeMachine.java
@@ -52,8 +52,8 @@ class ByteCodeMachine extends StackMachine {
     private final int[]code;        // byte code
     private int ip;                 // instruction pointer
 
-    ByteCodeMachine(Regex regex, byte[]bytes, int p, int end) {
-        super(regex, bytes, p, end);
+    ByteCodeMachine(Regex regex, byte[]bytes, int p, int end, boolean makeRegions) {
+        super(regex, bytes, p, end, makeRegions);
         this.code = regex.code;
     }
 
diff --git a/src/org/joni/Matcher.java b/src/org/joni/Matcher.java
index c4226fd..2d99f81 100644
--- a/src/org/joni/Matcher.java
+++ b/src/org/joni/Matcher.java
@@ -48,6 +48,16 @@ public abstract class Matcher extends IntHolder {
     protected int msaBegin;
     protected int msaEnd;
 
+    Matcher(Regex regex, byte[]bytes, int p, int end, boolean makeRegions) {
+        this.regex = regex;
+        this.enc = regex.enc;
+        this.bytes = bytes;
+        this.str = p;
+        this.end = end;
+
+        this.msaRegion = (!makeRegions || regex.numMem == 0) ? null : new Region(regex.numMem + 1);
+    }
+
     Matcher(Regex regex, byte[]bytes, int p, int end) {
         this.regex = regex;
         this.enc = regex.enc;
diff --git a/src/org/joni/MatcherFactory.java b/src/org/joni/MatcherFactory.java
index 7d12215..fa41230 100644
--- a/src/org/joni/MatcherFactory.java
+++ b/src/org/joni/MatcherFactory.java
@@ -21,11 +21,17 @@ package org.joni;
 
 abstract class MatcherFactory {
     abstract Matcher create(Regex regex, byte[]bytes, int p, int end);
+    abstract Matcher createNoRegions(Regex regex, byte[]bytes, int p, int end);
 
     static final MatcherFactory DEFAULT = new MatcherFactory() {
         @Override
         Matcher create(Regex regex, byte[] bytes, int p, int end) {
-            return new ByteCodeMachine(regex, bytes, p, end);
+            return new ByteCodeMachine(regex, bytes, p, end, true);
+        }
+
+        @Override
+        Matcher createNoRegions(Regex regex, byte[] bytes, int p, int end) {
+            return new ByteCodeMachine(regex, bytes, p, end, false);
         }
     };
 }
diff --git a/src/org/joni/Regex.java b/src/org/joni/Regex.java
index c900ed3..71d457d 100644
--- a/src/org/joni/Regex.java
+++ b/src/org/joni/Regex.java
@@ -160,6 +160,10 @@ public final class Regex {
         return factory.create(this, bytes, p, end);
     }
 
+    public Matcher matcherNoRegions(byte[]bytes, int p, int end) {
+        return factory.createNoRegions(this, bytes, p, end);
+    }
+
     public int numberOfCaptures() {
         return numMem;
     }
diff --git a/src/org/joni/StackMachine.java b/src/org/joni/StackMachine.java
index 73835f8..5f6b00a 100644
--- a/src/org/joni/StackMachine.java
+++ b/src/org/joni/StackMachine.java
@@ -38,8 +38,8 @@ abstract class StackMachine extends Matcher implements StackType {
     protected byte[] stateCheckBuff; // CEC, move to int[] ?
     protected int stateCheckBuffSize;
 
-    protected StackMachine(Regex regex, byte[]bytes, int p , int end) {
-        super(regex, bytes, p, end);
+    protected StackMachine(Regex regex, byte[]bytes, int p , int end, boolean makeRegions) {
+        super(regex, bytes, p, end, makeRegions);
         stack = regex.requireStack ? fetchStack() : null;
         final int n;
         if (Config.USE_SUBEXP_CALL) {