IJ46744: NO MATCHING FUNCTION FOR CALL TO OBJECT OF TYPE 'STD::__EQUAL_TO<INT>'

APAR status

• Closed as program error.

Error description

• Users who make use of the std::__equal_to<int> may run into
  compile time errors similar to the following:
  
  /opt/IBM/openxlC/17.1.1/bin/../include/c++/v1/__algorithm/equal.
  h:28:10: error: no matching function for call to object of type
  'std::__equal_to<int>'
      if (!__pred(*__first1, *__first2))
           ^~~~~~
  /opt/IBM/openxlC/17.1.1/bin/../include/c++/v1/__algorithm/equal.
  h:38:15: note: in instantiation of function template
  specialization 'std::equal<const volatile int *, int *,
  std::__equal_to<int>>' requested here
    return std::equal(__first1, __last1, __first2,
  __equal_to<__v1, __v2>());
  

Local fix

• N/A
  

Problem summary

• USERS AFFECTED:
  Users who make use of the std::__equal_to within templates are
  affected by this issue.
  
  PROBLEM DESCRIPTION:
  The C++ Standard asks for equal_to<void>, which should work with
  the combination of a const volatile int lvalue and an int
  lvalue.
  However, the compiler was not correctly following the above
  rule.
  

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