Fixes are available
XL C/C++ for AIX Fix Pack 4 (June 2013 PTF) for 12.1
XL C/C++ for AIX Fix Pack 5 (September 2013 PTF) for 12.1
XL C/C++ for AIX Fix Pack 7 (January 2014 PTF) for 12.1
XL C for AIX Fix Pack 8 (March 2014 PTF) for 12.1
XL C/C++ for AIX Fix Pack 8 (March 2014 PTF) for 12.1
XL C/C++ for AIX Fix Pack 11 (February 2015 PTF) for 12.1
XL C for AIX Fix Pack 12 (May 2015 PTF) for 12.1
XL C/C++ for AIX Fix Pack 12 (May 2015 PTF) for 12.1
XL C/C++ for AIX Fix Pack 13 (August 2015 Update) for 12.1
XL C/C++ for AIX Fix Pack 14 (December 2015 Update) for 12.1
XL C for AIX Fix Pack 15 (April 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 15 (April 2016 Update) for 12.1
XL C for AIX Fix Pack 16 (July 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 16 (July 2016 Update) for 12.1
XL C/C++ for AIX Fix Pack 17 (November 2016 Update) for 12.1
XL C for AIX Fix Pack 17 (November 2016 Update) for 12.1
XL C for AIX Fix Pack 18 (February 2017 Update) for 12.1
XL C/C++ for AIX Fix Pack 18 (February 2017 Update) for 12.1
XL C for AIX Fix Pack 19 (August 2017 Update) for 12.1
XL C/C++ for AIX Fix Pack 19 (August 2017 Update) for 12.1
XL C for AIX Fix Pack 20 (March 2018 Update) for 12.1
XL C/C++ for AIX Fix Pack 20 (March 2018 Update) for 12.1
XL C for AIX Fix Pack 4 (June 2013 PTF) for 12.1
XL C for AIX Fix Pack 5 (September 2013 PTF) for 12.1
XL C for AIX Fix Pack 6 (December 2013 PTF) for 12.1
XL C/C++ for AIX Fix Pack 6 (December 2013 PTF) for 12.1
XL C for AIX Fix Pack 7 (January 2014 PTF) for 12.1
XL C for AIX Fix Pack 9 (July 2014 PTF) for 12.1
XL C/C++ for AIX Fix Pack 9 (July 2014 PTF) for 12.1
XL C for AIX Fix Pack 10 (October 2014 PTF) for 12.1
XL C/C++ for AIX Fix Pack 10 (October 2014 PTF) for 12.1
XL C for AIX Fix Pack 11 (February 2015 PTF) for 12.1
XL C for AIX Fix Pack 13 (August 2015 Update) for 12.1
XL C for AIX Fix Pack 14 (December 2015 Update) for 12.1
XL C/C++ for AIX Fix Pack 21 (January 2019 Update) for 12.1
XL C for AIX Fix Pack 21 (January 2019 Update) for 12.1
APAR status
Closed as program error.
Error description
Compiling C code containing an OMP for loop pragma statement with nested for loops is performing an unnecessary canonical form check, resulting in invalid error messages. An internal compiler error may also be seen with subsequent nested for loops. ===== TEST CASE ===== // xlc_r -qsmp=omp -c test.c void a(); int b(); void c(); void test() { for(int j=0; j<10; j++) { _Pragma("omp for collapse(1)") for(int i=0; i<10; i++) { } } for (a(); !b(); c()) { long int x=0; long int y=0; long int const z=0; for (long int n = x; n < y; n += z) {} } } ===== ERROR ===== Linux / BG/Q Platforms: "test.c", line 13.14: 1506-817 (S) Init expression of the for loop is not in the canonical form. "test.c", line 13.19: 1506-818 (S) Controlling expression of the for loop is not in the canonical form. "test.c", line 13.25: 1506-819 (S) Re-init expression of the for loop is not in the canonical form. xlc_r: 1501-224 (S) fatal error in /opt/ibmcmp/vac/bg/12.1/exe/xlcentry AIX Platform: "test.c", line 13.14: 1506-817 (S) Init expression of the for loop is not in the canonical form. "test.c", line 13.19: 1506-818 (S) Controlling expression of the for loop is not in the canonical form. "test.c", line 13.25: 1506-819 (S) Re-init expression of the for loop is not in the canonical form. xlc_r: 1501-230 (S) Internal compiler error; please contact your Service Representative. For more information visit: http://www.ibm.com/support/docview.wss?uid=swg21110810
Local fix
Remove OMP pragma, or remove -qsmp=omp option.
Problem summary
PROBLEM DESCRIPTION: The incorrect scope is used by the compiler for the collapse(1) set by the pragma omp for. USERS AFFECTED: Using omp for collapse(#) pragmas.
Problem conclusion
The scope for the 'omp for collapse(1)' is now correctly allocated, and the issue is resolved.
Temporary fix
Comments
APAR Information
APAR number
IV44261
Reported component name
XL C FOR AIX
Reported component ID
5725C7100
Reported release
C10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-06-17
Closed date
2013-06-17
Last modified date
2013-06-17
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
XL C FOR AIX
Fixed component ID
5725C7100
Applicable component levels
Document Information
Modified date:
01 October 2021