IZ88773: :? leads to segfault in exception handling

January 2011 PTF for XL C/C++ for AIX, V11.1
May 2011 PTF for XL C/C++ for AIX, V11.1
August 2011 PTF for XL C/C++ for AIX, V11.1
November 2011 PTF for XL C/C++ for AIX, V11.1
January 2012 PTF for XL C/C++ for AIX, V11.1
April 2012 PTF for XL C/C++ for AIX, V11.1
July 2012 PTF for XL C/C++ for AIX, V11.1
October 2012 PTF for XL C/C++ for AIX, V11.1
February 2013 PTF for XL C/C++ for AIX, V11.1
XL C/C++ for AIX Fix Pack 14 (May 2013 PTF) for 11.1
XL C/C++ for AIX Fix Pack 15 (August 2013 PTF) for 11.1
XL C/C++ for AIX Fix Pack 16 (November 2013 PTF) for 11.1
XL C/C++ for AIX Fix Pack 17 (February 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 18 (May 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 19 (August 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 20 (November 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 21 (April 2015 PTF) for 11.1
XL C/C++ for AIX Fix Pack 22 (September 2015 PTF) for 11.1
XL C/C++ for AIX Fix Pack 23 (March 2016 PTF) for 11.1
XL C/C++ for AIX Fix Pack 24 (September 2016 PTF) for 11.1

APAR status

• Closed as program error.

Error description

• A large application segfaults in __ReThrowV6 if rethrowing a
  current exception (throw;) in one test case calling the main
  program. The other is segfaulting in __DoThrowV6 if throwing an
  exception
  (using throw(*this);) in another test case calling the same main
  program.
  

Local fix

• avoid temp variables to change : ? constructs to if then else
  statements.
  

Problem summary

• PROBLEM DESCRIPTION: A compiler temporary generated for a
  conditional expression using ? : operators is not initialized
  properly (missing constructor).  As a result, when the
  temporary is destructed during excpetion handling, user defined
  destructor checks for proper initialization and aborts.
  
  USERS AFFECTED: Program with condition expression that involves
  nested function call expressions returning object with user
  defined copy constructor
  

Problem conclusion

• The problem is fixed.
  

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:

  LI76100

Fix information

• Fixed component name

  XL C/C++ AIX

• Fixed component ID

  5724X1300

Applicable component levels