LI78417: CONST VARIABLE DEFINED IN WHILE CONDITION CAUSING INTERNAL COMPILER ERROR

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 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

• A small test case with a const variable defined in a while()
  loop parameter is causing an internal compiler error.
  
  
     === TEST CASE ===
  
  > cat test.cpp
  int main() {
      while (const int rcode = 0) {}
      return 0;
  }
  > xlC -c test.cpp
  xlC: 1501-230 (S) Internal compiler error; please contact your
  Service Representative. For more information visit:
  http://www.ibm.com/support/docview.wss?uid=swg21110810
  >
  

Local fix

• Define variable outside while() loop
  

Problem summary

• PROBLEM DESCRIPTION:
  An internal compiler error occurs with a loop with a const
  initializer as a condition.
  
  USERS AFFECTED:
  Users with loops using const initializers, such as while (const
  int rcode = 0).
  

Problem conclusion

• The problem has been fixed.
  

Temporary fix

Comments

APAR Information

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

  IV67213

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

Fix information

• Fixed component name

  XL C/C++ FOR BG

• Fixed component ID

  5799AG100

Applicable component levels