IJ27128: INTERNAL COMPILER ERROR WITH NESTED CONDITIONAL EXPRESSIONS WITHNEW OPERATOR

APAR status

• Closed as program error.

Error description

• An internal compiler error is encountered when compiling with
  the xlclang++ invocation and optimization, involving code using
  the new operator with a series of conditional expressions.
  
  
     === TEST CASE ===
  
  struct T { ~T(); };
  
  void bar();
  
  struct MyDeclConnectionPool
  {
  MyDeclConnectionPool(
      const T& nqS,
      const T& s,
      const T& strRequiredVersion,
      const T& strExternalizedConnectionName);
  };
  
  void foo(bool b, int i) {
    switch (i) {
    case 1057:
     new MyDeclConnectionPool(T(), T(), b ? T() : T(), b ? T() :
  T());
     bar();
     break;
    }
  }
  
  
  $ xlclang++ -c -O2 smpreduce.cpp
  1500-004: (U) INTERNAL COMPILER ERROR while compiling foo(bool,
  int).  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

• - Lower the optimization level
  - Compile with -qnoeh to disable exception handling
  

Problem summary

• PROBLEM DESCRIPTION:
  Some new expressions containing multiple nested conditional
  paths with temporary construction/destruction may cause an
  internal compiler error or potentially generate bad exception
  handling instrumentation code.
  
  USERS AFFECTED:
  C++ new expressions with multiple nested conditional paths that
  include temporary construction/destruction.
  

Problem conclusion

• The compiler has been fixed 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:

Fix information

• Fixed component name

  XL C/C++ FOR AI

• Fixed component ID

  5725C7200

Applicable component levels