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  1. JDK
  2. JDK-4022207

java.io.StreamTokenizer.xxxChars(low,hi) methods work wrong with hi

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    Details

    • Subcomponent:
    • Resolved In Build:
      1.1.1
    • CPU:
      sparc
    • OS:
      solaris_2.5
    • Verification:
      Not verified

      Description



      Name: saC57035 Date: 12/14/96


      The java_io.StreamTokenizer.xxxChars(low,hi) methods work wrong with
      hi greater than 255.
      They throw unexpected IndexOutOfBoundsException.

      Here is the example demonstrating the bug:
      ---- Test.java ----------------------
      import java.io.*;

      public class Test {

      public static void main( String argv[] ) {
       StreamTokenizer st = new StreamTokenizer(new StringBufferInputStream("TEST"));
       try {
         st.wordChars(20,300);
         System.out.println("Test passed");
       } catch (Throwable e) {
         System.out.println("Test failed: "+e+" is thrown");
       }
      }

      }
      -- The output ----------------
      Test failed: java.lang.ArrayIndexOutOfBoundsException: 256 is thrown
      ------------------------------

      The bug in source code is evident:

          public void wordChars(int low, int hi) {
      if (low < 0)
      low = 0;
      if (hi > ctype.length) // HERE MUST BE ctype.length-1
      hi = ctype.length; // AND HERE AS WELL
      while (low <= hi)
      ctype[low++] |= CT_ALPHA;
          }
      ======================================================================

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            Assignee:
            apalanissunw Anand Palaniswamy (Inactive)
            Reporter:
            savzan Stanislav Avzan (Inactive)
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