Fixes are available
May 2012 PTF for XL C/C++ for AIX, V10.1
January 2013 PTF for XL C/C++ for AIX, V10.1
XL C/C++ for AIX Fix Pack 18 (July 2013 PTF) for 10.1
XL C/C++ for AIX Fix Pack 19 (October 2013 PTF) for 10.1
XL C/C++ for AIX Fix Pack 21 (October 2015 PTF) for 10.1
May 2011 PTF for XL C/C++ for AIX, V10.1
October 2011 PTF for XL C/C++ for AIX, V10.1
February 2012 PTF for XL C/C++ for AIX, V10.1
September 2012 PTF for XL C/C++ for AIX, V10.1
XL C/C++ for AIX Fix Pack 20 (October 2014 PTF) for 10.1
APAR status
Closed as program error.
Error description
For the below test case, xlC is producing incorrect sizeof() value for enum type. $cat test.C #include <stdio.h> enum foo { a = 0xffffffff, b = a | 0x01 }; int main(void) { printf("sizeof(foo) == %d\na == %llx\nb == %x\n", sizeof(foo), a, b); return 0; } ACTUAL OUTPUT: $xlC test.C -o test && ./test sizeof(foo) == 8 a == ffffffff b == ffffffff EXPECTED OUTPUT: $./test sizeof(foo) == 4 a == ffffffff b == ffffffff
Local fix
Use unsigned cast: enum foo { a = 0xffffffff, b = unsigned(a | 0x01) };
Problem summary
PROBLEM DESCRIPTION: Enumerator type before the closing brace of the enumeration is not stored correctly. Enumerators will have incorrect integeral values when used in numeric context. USERS AFFECTED: programs with values greater than 0x7FFFFFFF used in the enumeration.
Problem conclusion
The enumerator types are now set correctly before the closing brace.
Temporary fix
Comments
APAR Information
APAR number
IZ93324
Reported component name
XL C++ AIX
Reported component ID
5724U8100
Reported release
A10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-01-27
Closed date
2011-03-31
Last modified date
2011-03-31
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++ AIX
Fixed component ID
5724U8100
Applicable component levels
[{"Line of Business":{"code":"LOB08","label":"Cognitive Systems"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSJT9L","label":"XL C\/C++"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"A.1"}]
Document Information
Modified date:
06 October 2021