LI77642: UNRESOLVED SYMBOLS WHEN COMPILING WITH -QIPA

XL C/C++ for Linux Fix Pack 8 (October 2015 Update) for 12.1
XL C/C++ for Linux Fix Pack 4 (October 2013 Update) for 12.1
XL C/C++ for Linux Fix Pack 5 (December 2013 Update) for 12.1
XL C/C++ for Linux Fix Pack 6 (February 2014 Update) for 12.1
XL C/C++ for Linux Fix Pack 7 (May 2014 Update) for 12.1

APAR status

• Closed as program error.

Error description

• When compiling with -qipa=level=0:inline=noauto -qipa=relink,
  the resulting link fails with unresolved symbol error.
  
  The error goes away if we remove the
  "-qipa=level=0:inline=noauto -qipa=relink" from the compile
  step.
  

Local fix

• N/A
  

Problem summary

• USERS AFFECTED:
  Users using exception handling, that have mixed IPA and non-IPA
  objects in an archive may run into unresolved symbols during
  link time.
  
  PROBLEM DESCRIPTION:
  Unresolved symbol errors are emitted by the AIX linker when
  linking IPA compiled and non-IPA compiled objects with IPA
  enabled.
  

Problem conclusion

• The compiler has been fixed to detect and handle the above case
  properly by choosing IPA definitions over definitions from
  shared objects.
  

Temporary fix

Comments

APAR Information

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

  IV38234

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

Fix information

• Fixed component name

  XL C/C++ FOR LI

• Fixed component ID

  5725C7300

Applicable component levels

• RC10 PSN IV38234

     UP06/09/13