LI80739: WCHAR_T BRACED INITIALIZER STRING INITIALIZED TO NULL

APAR status

• Closed as program error.

Error description

• A wide character, wchar_t, array initialized with a braced value
  is initialized to NULL.
  
  
     === TEST CASE ===
  
  #include <stdio.h>
  #include <wchar.h>
  
  int main()
  {
     char a1[] = "hello";
     char a2[] = {"there"};
     printf("a1 %s a2 %s %lu\n", a1, a2, sizeof(wchar_t));
  
     wchar_t s1[] =  L"hello";
     wchar_t s2[] = {L"there"};  // NULLed out
     printf("s1 %ls s2 %ls\n", s1, s2);
  
     return 0;
  }
  
  
  
  $ xlc char.c
  $ ./a.out
  a1 hello a2 there 4
  s1 hello s2
  $
  
  
  Expected Output:
  
  a1 hello a2 there 4
  s1 hello s2 there
  

Local fix

• Do not use braced list initializer for wchar_t type
  

Problem summary

• PROBLEM DESCRIPTION:
  The wchar_t type is interpretted incorrectly within the
  compiler, causing incorrect code to be generated for the
  initializer.
  
  USERS AFFECTED:
  Users of wchar_t arrays with braced initializers.
  

Problem conclusion

• The type interpretation was corrected and the initializer now
  works correctly.
  

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++ LINUX

• Fixed component ID

  5725C7310

Applicable component levels