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  1. JDK
  2. JDK-6565178

unhandled explicit exception in compiled code

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 5.0, 5.0u7, 6
    • Fix Version/s: hs10
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b14
    • CPU:
      x86, sparc
    • OS:
      linux_sun, solaris_9, windows_xp

      Backports

        Description

        The symptom is the old "unhandled
        explicit exception in compiled code" guarantee. This is JDK7 b12 on
        Solaris 10 x86 (Intel) running SPECjbb2005. I am running with a
        modified TreeMap however the code changes are pure Java and should not
        cause a crash. However the crash comes while executing the modified
        TreeMap code, specifically line 1139:

              Entry<K,V> cur = root;
              if (first != null && cur != null) {
                int cmp = compare(first.key, cur.key);
                while (cur != null && cmp != 0) {
                  stack.push(cur);
                  // if (cur == null) throw new NullPointerException();
                  if (cmp < 0) cur = cur.left; // line 1139: CRASHES HERE
                  else cur = cur.right;
                }
              }

        (Complete TreeMap.java listing is attached.) Note that this code
        actually has a bug in it: the variable "cmp" is not updated each time
        through the loop. Still, it shouldn't crash. :)

        So I ran this with fastdebug + PrintNMethods; yielding the message
        "implicit exception happened at 0xfa16f217":

          0xfa16f1e5: movl 0x14(%esi),%ebp
          0xfa16f1e8: movl %ebp,0x18(%esp,1)
          0xfa16f1ec: leal 0x14(%ebx),%ebp
          0xfa16f1ef: movl %ebp,0x1c(%esp,1)
          0xfa16f1f3: leal 0xc(%ebx),%ebp
          0xfa16f1f6: movl %ebp,0x20(%esp,1)
          0xfa16f1fa: movl 0x18(%esp,1),%ebp
          0xfa16f1fe: movl 0x14(%ebp),%ebp
          0xfa16f201: movl %ebp,0x28(%esp,1)
          0xfa16f205: leal 0x10(%ebx),%ebp
          0xfa16f208: movl %ebp,0x2c(%esp,1)
          0xfa16f20c: movl 0x28(%esp,1),%ebp
          0xfa16f210: movl 0x14(%ebp),%ebp
          0xfa16f213: movl %ebp,0x30(%esp,1)
          0xfa16f217: movl 0x14(%ebp),%esi ;*getfield left <--- CRASH HERE
                                                ; -
        java.util.TreeMap$PrivateEntryIterator::<init>@104 (line 1139)

        Again, the complete PrintNMethods listing for
        TreeMap$PrivateEntryIterator::<init> is attached.

        Any clues or debugging hints are appreciated. If it's unrecognized I'll
        just extract a testcase and file a bug.

        From Steve Bohne

        Run specjbb2005 with modified java/util/TreeMap.java (attached)

        java -test -XX:CICompilerCount=1 -Xbatch -Xbootclasspath/p:./java/util/TreeMap.class -classpath ./jbb.jar:./check.jar -XX:+PrintCompilation -Xmx1g spec.jbb.JBBmain -propfile SPECjbb.props

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                • Assignee:
                  rknippelsunw Ross Knippel (Inactive)
                  Reporter:
                  rknippelsunw Ross Knippel (Inactive)
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                    Updated:
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