LI72377: xlC segmentation fault in xlCcode

Latest updates for XL C/C++ Advanced Edition V7 for Linux

APAR status

• Closed as program error.

Error description

• A carefully constructed testcase can cause the compiler to
  abend.
  Changing the length of variable names can introduce or remove
  the problem.
  

Local fix

• Compile at -O2.
  Compiling in 64-bit mode (-q64) may also allow for a clean
  compile.
  

Problem summary

• Functions with very very long function names, compiling at -O3
  or above. Typically C++ template class methods with several
  levels on instantiation would yield a function name long
  enough to be affected.
  
  An internal compiler error is produced with XL C/C++ V7.
  Later versions do not contain the problem.
  

Problem conclusion

• During optimization calculate the size of function name is not
  calculated correctly which results in a corrupted memory data
  structure. The size calculation has been corrected.
  

Temporary fix

Comments

APAR Information

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

  IY91262

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

Fix information

• Fixed component name

  XL C/C++ RHEL4

• Fixed component ID

  5724K7720

Applicable component levels

• R701 PSN IY91262

     UP06/09/13