IZ94556: CRASH IN __CHARTOBYTELENGTH DURING JNI CALL DUE TO ZERO BYTE ALL OCATION

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace:
  
  The failing stack trace includes the following fragment:
  
  ...
  dbgMalloc +00000082 *PATHNAM
  _CharToByteLength +00000374 *PATHNAM
  IBMZOS_GetStringPlatformLength +0000007E *PATHNAM
  GetStringPlatformLength +00000072 *PATHNAM
  GetStringPlatformLength +0000001C *PATHNAM
  ...
  

Local fix

Problem summary

• __CharToByteLength function used strlen to calculate the string
  size. For unicode string, the first byte can be '00' for DBCS
  character. If the first character in the string is a DBCS
  character with first byte '00', then the length of the string is
  calculated as 0 and result in zero byte allocation.
  

Problem conclusion

• This defect will be fixed in:
  5.0.0 SR12 FP5
  .
  JVM is modified to correctly calculate the unicode string size
  and there by avoid zero byte allocation.
  .
  To obtain the fix:
  Install build 20110422 or later
  

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:

Fix information

• Fixed component name

  JAVA 5 CLASS LI

• Fixed component ID

  620500130

Applicable component levels

• R500 PSN

     UP