LI76208: ASSERT WITH TLS AND INLINE ASSEMBLY

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
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

• When compiling source that contains both inline assembly (ASM)
  and thread local storage (TLS), the compiler outputs an internal
  assert and exits:
  
  -----------------------
  The assert subroutine failed: drx.points_at_dr() ||
  drx.toc_direct() || drx.is_proc(), file
  /build/tobey/r34_com/tobey.r34-prod-opt/aix/tobey/source/as_powe
  rasm.cpp, line 1190
  -----------------------
  
  This is due to the AIX assembler not supporting thread local
  storage in the past.  Support for TLS was added to the
  assembler via the following AIX APARs:
  
  APAR_aix_53Q = IZ81338 5.3 TL9
  APAR_aix_53S = IZ81339 5.3 TL10
  APAR_aix_53V = IZ81340 5.3 TL11
  APAR_aix_53X = IZ81341 5.3 TL12
  APAR_aix_61D = IZ81343 6.1 TL2
  APAR_aix_61F = IZ81344 6.1 TL3
  APAR_aix_61H = IZ81346 6.1 TL4
  APAR_aix_61J = IZ81347 6.1 TL5
  APAR_aix_61L = IZ69955 6.1 TL6
  (AIX 7.1 base-level OS already contains the feature)
  
  One of these AIX APARs is required in conjunction with this
  compiler APAR to add support for mixed TLS/inline ASM code.
  

Local fix

• Separate ASM and TLS into different source files.
  

Problem summary

• PROBLEM DESCRIPTION:
  The compiler is asserting when processing inline assembly
  statements.
  
  USERS AFFECTED:
  Users with code that mixes inline assembly with thread local
  storage.
  

Problem conclusion

• The condition causing the assert was corrected, and support for
  mixed inline ASM and TLS was added.
  

Temporary fix

Comments

APAR Information

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

  IZ97395

• 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 PSY

     UP