PM84401: LOOP WHEN USING IBMDOUBLEFIELD

APAR status

• Closed as program error.

Error description

• When using jzos IbmDoubleField class, the method getDouble
  enters an infinite loop with certain inputs.
  
  Sample that demonstrates the trouble:
   IbmDoubleField d = new IbmDoubleField(0);
   byte[] array = new byte[8];
   for(int i=0; i < array.length; i++)
       array[i] = 0x0;
   array[7] = 0x2;
   d.getDouble(array, 0);
  

Local fix

Problem summary

• Calling JZOS IbmDoubleField::getDouble(byte<OSB><CSB>) with
  certain input bytes such as {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
  0x2}, will cause an infinite loop.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR14 (z/OS 31-bit)
  6.0.0 SR14 (z/OS 64-bit)
  6.0.1 SR6 (z/OS 31-bit)
  6.0.1 SR6 (z/OS 64-bit)
  7.0.0 SR5 (z/OS 31-bit)
  7.0.0 SR5 (z/OS 64-bit)
  .
  The JZOS IbmDoubleField::getDouble(byte<OSB><CSB>) method has
  been updated such that it will no longer cause an infinite loop
  with certain input bytes.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  PM86633

Fix information

• Fixed component name

  JAVA Z/OS 31

• Fixed component ID

  620700105

Applicable component levels

• R600 PSY

     UP

• R601 PSY

     UP

• R700 PSY

     UP