IV26278: COMPILER ABEND WITH -QPDF LINK

November 2012 PTF for XL C for AIX, V12.1
November 2012 PTF for XL C/C++ for AIX, V12.1
March 2013 PTF for XL C for AIX, V12.1
March 2013 PTF for XL C/C++ for AIX, V12.1

APAR status

• Closed as program error.

Error description

• When adding -qpdf to the link line of a large application, the
  compiler abends.
  
  The main options that are used to reproduce the abend are the
  following:
  xlC_r -q64 -brtl -bnortllib -bbigtoc -lm -brtl -lwlm
  -qipa=relink -qpdf1=pdfname=<filename> -qipa=level=0
  
  
  ===== ACTUAL OUTPUT:
  Compiler abends.
  
  
  ===== EXPECTED OUTPUT:
  Compiler should not abend.
  

Local fix

• N/A
  

Problem summary

• USERS AFFECTED:
  User who compile a large procedure with optimization can be
  affected by this issue.
  
  PROBLEM DESCRIPTION:
  The compiler is crashing when compiling a procedure with more
  than 2^16 basic blocks.
  

Problem conclusion

• The compiler fix was to turn an internal array into an array of
  64-bit integers instead of 32-bit integers.
  

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:

  LI77119

Fix information

• Fixed component name

  XL C FOR AIX

• Fixed component ID

  5725C7100

Applicable component levels

• RC10 PSY U856101

     UP C