LI75568: SYNTAX ERROR FOR DATA STRUCTURE MEMBERS

June 2011 Update for XL C/C++ for Linux, V10.1
XL C/C++ for Linux Fix Pack 8 (January 2014 Update) for 10.1
August 2010 Update for XL C/C++ for Linux, V10.1
January 2011 Update for XL C/C++ for Linux, V10.1
January 2012 Update for XL C/C++ for Linux, V10.1
July 2012 Update for XL C/C++ for Linux, V10.1

APAR status

• Closed as program error.

Error description

• The compiler produces a syntax message for the following
  test case:
  
  ======Compile Line:
  xlC_r -c  test.cpp
  
  ===== TESTCASE:
  $cat test.cpp
  #include <stdarg.h>
  typedef unsigned long vportULong;
  typedef long vportLong;
  
  typedef void (*vportSIG_PF)(int);
  
  extern  const int vportBUILD_NUMBER;
  
  extern "C" {
  
  }
  extern "C" {
  
  }
  extern "C" {
  
  extern "C" {
  
  }
  extern "C" {
  
  typedef char *va_list;
  
  }
  extern "C" {
  
  }
  }
  
  typedef struct vArgListTag {
    va_list v;
  } vArgList;
  
  
  void galaxySignal(char *fmt, ...)
  {
    vArgList list;
    va_start(list.v, fmt);
  }
  
  
  int main(int argc, char **argv)
  {
  
  return 0;
  }
  
  ===== ACTUAL OUTPUT:
  $
  /.../torolab.ibm.com/fs/projects/vabld/run/vacpp/101_com/aix/dai
  ly/latest/bin/xlC_r -c  test.cpp
  "test.cpp", line 38.16: 1540-0064 (S) Syntax error:  "," was
  expected but "." was found.
  $
  
  ===== EXPECTED OUTPUT:
  Should compile clean
  

Local fix

• Replacing
    va_start(list.v, fmt);
  
  with
    va_list &listv = list.v;
    va_start(listv, fmt);
  
  will help you workaround this issue.
  

Problem summary

• USERS AFFECTED:
  Users using va_start with expressions such as a member access
  are affected by this issue.
  
  PROBLEM DESCRIPTION:
  Parser grammar for __builtin_va_start restricted to
  parenthesized names.
  

Problem conclusion

• Modified the grammar to allow more general expressions and
  added additional type analysis for arguments.
  

Temporary fix

Comments

APAR Information

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

  IZ73174

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

Fix information

• Fixed component name

  XL C/C++ RHEL52

• Fixed component ID

  5724U8310

Applicable component levels

• RA10 PSN IZ73174

     UP06/09/13