IV84525: GLOBAL TYPEDEF INTERFERES WITH FUNCTION PARAMETER WITH THE SAME NAME

XL C for AIX Fix Pack 16 (July 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 16 (July 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 17 (November 2016 Update) for 12.1
XL C for AIX Fix Pack 17 (November 2016 Update) for 12.1
XL C for AIX Fix Pack 18 (February 2017 Update) for 12.1
XL C/C++ for AIX Fix Pack 18 (February 2017 Update) for 12.1
XL C for AIX Fix Pack 19 (August 2017 Update) for 12.1
XL C/C++ for AIX Fix Pack 19 (August 2017 Update) for 12.1
XL C for AIX Fix Pack 20 (March 2018 Update) for 12.1
XL C/C++ for AIX Fix Pack 20 (March 2018 Update) for 12.1
XL C/C++ for AIX Fix Pack 21 (January 2019 Update) for 12.1
XL C for AIX Fix Pack 21 (January 2019 Update) for 12.1

APAR status

• Closed as program error.

Error description

• A typedef name is interfering with a parameter variable that has
  the same name in a function definition, causing an invalid
  compiler error message.
  
  
  
     === TEST CASE ===
  
  typedef char YYY;
  void foo(void (*YYY)(void*)) {};
  
  $ xlc -c test2.c
  "test.c", line 2.17: 1506-275 (S) Unexpected text YYY
  encountered.
  "test.c", line 2.10: 1506-172 (S) Parameter type list for
  function foo contains parameters without identifiers.
  $
  

Local fix

Problem summary

• PROBLEM DESCRIPTION:
  A function pointer type passed as a function parameter is
  encountering a name conflict with a typedef.
  
  USERS AFFECTED:
  Users with function pointer variable names used as function
  parameters with the same name as a typedef.
  

Problem conclusion

• The issue has been fixed, and the conflict and error message no
  longer occur.
  

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:

  IV87860 IV91682

Fix information

• Fixed component name

  XL C FOR AIX

• Fixed component ID

  5725C7100

Applicable component levels

• RC10 PSY

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