LI77581: INTERNAL COMPILER ERROR WITH -QCHECK=ALL

XL C/C++ for Blue Gene/Q Fix Pack 12 (May 2015 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 14 (May 2016 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 15 (October 2017 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 6 (November 2013 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 7 (February 2014 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 8 (May 2014 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 9 (August 2014 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 10 (November 2014 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 11 (February 2015 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 13 (August 2015 Update) for 12.1

APAR status

• Closed as program error.

Error description

• The compiler may issue INTERNAL COMPILE ERROR message while
  using optimization (compiler option -O2 and above) together with
  -qcheck=all compiler option.
  

Local fix

• N/A
  

Problem summary

• USERS AFFECTED:
  Users who compile with -qcheck=all with optimisation level 2 or
  higher may be affected by this issue.
  
  PROBLEM DESCRIPTION:
  An internal optimization tries to replace loads and stores with
  update forms and so needs to rewrite them.
  It was not taking into account the possibility of an unknown
  number of trap bags on the address
  specification, ie, one for each dimension that was used for
  bounds checking.
  

Problem conclusion

• The internal optimization has been modified to handle the above
  scenario.
  

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:

  LI77672 IV53337

Fix information

• Fixed component name

  XL C/C++ FOR BG

• Fixed component ID

  5799AG100

Applicable component levels