Name: tb29552 Date: 06/25/98


/*
 * I have verified this bug on JDK 1.1.6 using the original SYMCJIT.DLL and
 * the Early Access Release 2 SYMCJIT.DLL from the JDC.
 *
 * Compile and execute the following code:
 *
 */
// testFor.java

public final class testFor {
  public static final int Iterations = 1000000;
  public static final int CheckPoint = 100000;

  public static void main(String[] args) {
    long start = System.currentTimeMillis();
    testFor t = new testFor();
    int j = 0;
    int k = 0;

    for (int i =0 ; i < Iterations; ++i) {
      try {
int a = t.foo(null);
      } catch (Exception m) {
            
      }
      ++j;
      if (j == CheckPoint) {
++k;
System.err.println((k * j));
j = 0;
      }
    }
    long finish = System.currentTimeMillis();
    long elapsed = finish - start;

    System.err.println(elapsed + " milliseconds");
  }

  int foo(String str) {
    return str.length();
  }
}
/*
 * My console looks like this:
 *
 * (Original 1.1.6 JIT)
 *
 * E:\dnload\temp2>set JAVA_COMPCMD=FORCE_SIGNON
 *
 * E:\dnload\temp2>javac testFor.java
 * Symantec Java! JustInTime Compiler Version 3.00.039(x) for JDK 1.1.x
 * Copyright (C) 1996-98 Symantec Corporation
 *
 *
 * E:\dnload\temp2>java testFor
 * Symantec Java! JustInTime Compiler Version 3.00.039(x) for JDK 1.1.x
 * Copyright (C) 1996-98 Symantec Corporation
 *
 * 32 milliseconds
 *
 * E:\dnload\temp2>java -nojit testFor
 * 100000
 * 200000
 * 300000
 * 400000
 * 500000
 * 600000
 * 700000
 * 800000
 * 900000
 * 1000000
 * 23891 milliseconds
 *
 *
 * (EA 2 JIT)
 *
 * E:\dnload\temp2>set JAVA_COMPCMD=FORCE_SIGNON
 *
 * E:\dnload\temp2>javac testFor.java
 * Symantec Java! JustInTime Compiler Version 3.00.050(x) for JDK 1.1.x
 * Copyright (C) 1996-98 Symantec Corporation
 *
 *
 * E:\dnload\temp2>java testFor
 * Symantec Java! JustInTime Compiler Version 3.00.050(x) for JDK 1.1.x
 * Copyright (C) 1996-98 Symantec Corporation
 *
 * 31 milliseconds
 *
 * E:\dnload\temp2>java -nojit testFor
 * 100000
 * 200000
 * 300000
 * 400000
 * 500000
 * 600000
 * 700000
 * 800000
 * 900000
 * 1000000
 * 23828 milliseconds
 *
 *
 * Clearly, the JIT-enabled execution is flawed. Even if it optimizes out the
 * try/catch block, the System.err output should still be written.
 */

(Review ID: 34304)
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