IV71963: INVALID QINFO/QFORMAT MESSAGE FOR STRFTIME() SPECIFIERS

XL C for AIX Fix Pack 12 (May 2015 PTF) for 12.1
XL C/C++ for AIX Fix Pack 12 (May 2015 PTF) for 12.1
XL C/C++ for AIX Fix Pack 13 (August 2015 Update) for 12.1
XL C/C++ for AIX Fix Pack 14 (December 2015 Update) for 12.1
XL C for AIX Fix Pack 15 (April 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 15 (April 2016 Update) for 12.1
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 for AIX Fix Pack 13 (August 2015 Update) for 12.1
XL C for AIX Fix Pack 14 (December 2015 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

• C99 added new specifiers to the strftime() function, including
  the "%G" specifier for Week-based year.
  
  The XL C/C++ options qinfo/qformat flag incorrect specifier
  usage and is incorrectly flagging the '%G' specifier.
  
  
     === TEST CASE ===
  
  #include <stdio.h>
  #include <time.h>
  int main()
  {
      const time_t mytime=(time_t)639192213; // 04/04/1990 1:23:33
      struct tm *now = gmtime(&mytime);
      char hour_sig[400] = {0};
      strftime(hour_sig, sizeof(hour_sig) - 1, "G = %G m = %m d =
  %d H = %H", now);
      printf("%s\n",hour_sig);
  }
  
  
  
  $ xlc -qinfo=all -qformat=all test.c
  ...
  "test.c", line 8.46: 1506-1184 (I) This platform does not
  support the use of a non-portable extension character 'G' in the
   format.
  ...
  

Local fix

Problem summary

• PROBLEM DESCRIPTION:
  The compiler is incorrectly flagging valid usage of C99
  specifiers to the strftime() function.
  
  USERS AFFECTED:
  Users of the C99 specifiers with the strftime() function.
  

Problem conclusion

• The list of C99 specifiers for strftime() are now accepted by
  the compiler and the informational message is no longer output.
  

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 FOR AIX

• Fixed component ID

  5725C7100

Applicable component levels

• RC10 PSY

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