LI77342: INCORRECT COMPILE TIME ERROR MESSAGE WITH OBJECTS

April 2013 Update for XL C/C++ for Linux, V12.1
XL C/C++ for Linux Fix Pack 8 (October 2015 Update) for 12.1
XL C/C++ for Linux Fix Pack 4 (October 2013 Update) for 12.1
XL C/C++ for Linux Fix Pack 5 (December 2013 Update) for 12.1
XL C/C++ for Linux Fix Pack 6 (February 2014 Update) for 12.1
XL C/C++ for Linux Fix Pack 7 (May 2014 Update) for 12.1

APAR status

• Closed as program error.

Error description

• When compiling the following test case, the compiler
  incorrectly generates an error message:
  
  ====Compile command:
  xlC_r -q64 -c test.cpp
  
  ====Testcase:
  $ cat test.cpp
  class FOO {
   public:
    ~FOO() {}
  };
  
  class StackObj {
   public:
    void  operator delete(void* p) {}
  };
  
  class MethodHandleWalker : StackObj {
    FOO foo;
  };
  
  class MethodHandleCompiler : public MethodHandleWalker {
  };
  
  int main(int argc, char* argv[]) {
  
    {
      MethodHandleCompiler mh;
    }
  
    return 1;
  }
  $
  
  =====Actual Output:
  $ xlC_r -q64 -c test.cpp
  "test.cpp", line 11.28: 1540-0198 (W) The omitted keyword
  "private" is assumed for base class "StackObj".
  "test.cpp", line 6.7: 1540-0300 (S) The "private" member "class
  StackObj" cannot be accessed.
  "test.cpp", line 15.7: 1540-0719 (I) The previous message was
  produced while processing the implicit member function
  "MethodHandleCompiler::~MethodHandleCompiler()".
  "test.cpp", line 18.5: 1540-0700 (I) The previous message was
  produced while processing "main(int, char *[])".
  
  
  =====Expected Output:
  $ xlC_r -q64 -c test.cpp
  "test.cpp", line 11.28: 1540-0198 (W) The omitted keyword
  "private" is assumed for base class "StackObj".
  $
  

Local fix

• N/A
  

Problem summary

• USERS AFFECTED:
  This only happens for a compiler generated destructor of a
  derived class when its base class derives privately from the
  class where a publicly defined operator function resides.
  
  PROBLEM DESCRIPTION:
  Compiler is incorrectly generating access checking error (ie
  error code 1540-0300) for public operator delete function.
  

Problem conclusion

• When access checking is performed for any operator functions we
  do not treat the enclosing class as the qualifier for the
  operator function to avoid diagnostic 1540-0300.
  

Temporary fix

Comments

APAR Information

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

  IV37037

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

Fix information

• Fixed component name

  XL C/C++ FOR LI

• Fixed component ID

  5725C7300

Applicable component levels

• RC10 PSN IV37037

     UP06/09/13