Fixes are available
May 2011 PTF for XL C for AIX, V11.1
May 2011 PTF for XL C/C++ for AIX, V11.1
August 2011 PTF for XL C/C++ for AIX, V11.1
November 2011 PTF for XL C/C++ for AIX, V11.1
January 2012 PTF for XL C for AIX, V11.1
January 2012 PTF for XL C/C++ for AIX, V11.1
April 2012 PTF for XL C for AIX, V11.1
April 2012 PTF for XL C/C++ for AIX, V11.1
July 2012 PTF for XL C/C++ for AIX, V11.1
October 2012 PTF for XL C for AIX, V11.1
October 2012 PTF for XL C/C++ for AIX, V11.1
February 2013 PTF for XL C for AIX, V11.1
February 2013 PTF for XL C/C++ for AIX, V11.1
XL C/C++ for AIX Fix Pack 14 (May 2013 PTF) for 11.1
XL C for AIX Fix Pack 14 (May 2013 PTF) for 11.1
XL C/C++ for AIX Fix Pack 15 (August 2013 PTF) for 11.1
XL C for AIX Fix Pack 15 (August 2013 PTF) for 11.1
XL C/C++ for AIX Fix Pack 16 (November 2013 PTF) for 11.1
XL C for AIX Fix Pack 17 (February 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 17 (February 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 18 (May 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 19 (August 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 20 (November 2014 PTF) for 11.1
XL C for AIX Fix Pack 21 (April 2015 PTF) for 11.1
XL C/C++ for AIX Fix Pack 21 (April 2015 PTF) for 11.1
XL C/C++ for AIX Fix Pack 22 (September 2015 PTF) for 11.1
XL C for AIX Fix Pack 23 (March 2016 PTF) for 11.1
XL C/C++ for AIX Fix Pack 23 (March 2016 PTF) for 11.1
XL C for AIX Fix Pack 24 (September 2016 PTF) for 11.1
XL C/C++ for AIX Fix Pack 24 (September 2016 PTF) for 11.1
August 2011 PTF for XL C for AIX, V11.1
November 2011 PTF for XL C for AIX, V11.1
July 2012 PTF for XL C for AIX, V11.1
XL C for AIX Fix Pack 16 (November 2013 PTF) for 11.1
XL C for AIX Fix Pack 18 (May 2014 PTF) for 11.1
XL C for AIX Fix Pack 19 (August 2014 PTF) for 11.1
XL C for AIX Fix Pack 20 (November 2014 PTF) for 11.1
XL C for AIX Fix Pack 22 (September 2015 PTF) for 11.1
APAR status
Closed as program error.
Error description
Incorrect output with optimization turned on at compile time using the following test program: /************************* test.c ***************************/ #include <stdio.h> struct MYSTRUCT { long af; long as; }; void foo(struct MYSTRUCT *element,long second) { if (element->af != second) { printf("ERROR: element->af =%ld,second=%ld\n",element->af, second); printf(" They should be the same.\n"); } else printf("SUCCESS: element->af and second are the same: %ld.\n",second); } void assgn(long i,double *d) { if (i == 1) *d=5.0; if (i == 2) *d=1.0; return; } int myfunc (struct MYSTRUCT *element) { long first, second; double temp; assgn (1, &temp); second = (long)temp; assgn (2, &temp); first = (long)temp; element->as = (int) first; element->af = second; /* <<== Problem occurs here */ foo(element,second); return(0); } int main() { struct MYSTRUCT foo; int rc; foo.af = 0L; rc = myfunc (&foo); } /********************* end of test.c **********************/ Compiling to reproduce the error: $xlc -qnoinline -q64 -qarch=auto -O test.c $./a.out ERROR: element->af =1,second=5 They should be the same. Testcase works as expected if optimization is not turned on: $xlc -qnoinline -q64 -qarch=auto test.c $./a.out SUCCESS: element->af and second are the same: 5.
Local fix
Do not turn on optimization.
Problem summary
Incorrect code generation for floating-point to integer conversion with -O2 and up, -qarch=pwr4 and up
Problem conclusion
Fixed optimization issue with floating-point to integer conversions for pwr4 and up.
Temporary fix
Comments
APAR Information
APAR number
IZ93220
Reported component name
XL C++ RUNTIME
Reported component ID
5724X1301
Reported release
B10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-01-26
Closed date
2011-03-08
Last modified date
2011-03-08
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
5724X1200
Applicable component levels
Document Information
Modified date:
08 March 2011