IV84572: INTERNAL COMPILER ERROR WITH -O2 AND VARIABLE INIT

XL C for AIX Fix Pack 24 (September 2016 PTF) for 11.1
XL C/C++ for AIX Fix Pack 24 (September 2016 PTF) for 11.1

APAR status

• Closed as program error.

Error description

• Compiling an application containing a variable initialization
  with boolean conditional evaluation with -O2 is encountering an
  internal compiler error.
  
  
  
  === EXAMPLE CODE ===
  
  Note:  not a standalone test case
  
  unsigned long val d =
        !( ((1L<<(value1)) & (number)) != 0L ) ||
        !( ((1L<<(value2)) & (number)) != 0L );
  
  
  $ xlC -c -O2 test.c
      1500-004: (U) INTERNAL COMPILER ERROR while compiling
  func1.  Compilation ended.  Contact your Service
  Representative and provide the following information: Internal
  abort. For more information visit:
  http://www.ibm.com/support/docview.wss?uid=swg21110810
  $
  

Local fix

• Do not use optimization.
  

Problem summary

• PROBLEM DESCRIPTION:
  Internal compiler error when internal-compiler code
  representation is unexpected/invalid for code optimization.
  
  USERS AFFECTED:
  Users of optimization.
  

Problem conclusion

• The code representation issue has been resolved, and the
  problem is fixed.
  

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:

  IV85975

Fix information

• Fixed component name

  XL C FOR AIX

• Fixed component ID

  5724X1200

Applicable component levels

• RB10 PSY

     UP