Fixes are available
APAR status
Closed as program error.
Error description
When compiling the following test case, the result of the sizeof operator inside the template class is incorrect. ------------------------------------- To Compile: xlC test.C ============ TEST CASE ============ extern "C" int printf(const char * , ...); template <class type> struct tempfoo { enum { SIZE = sizeof(type) }; }; struct foo { struct Values { double V1,V2,V3,V4; }; typedef tempfoo<Values> Some_type; Some_type Null_T; typedef tempfoo<Values> Some_type2; struct Values2 { Some_type2 Var_name; }; }; int main() { printf("SIZE = %d, should be %d\n", foo::Some_type2::SIZE, sizeof(foo::Values)); return 1; }
Local fix
Problem summary
USER AFFECTED: Users creating classes with multiple templated variables, of the same type, that get instantiated more than once in a class (ie, the template class uses a template parameter to calculate sizeof). PROBLEM DESCRIPTION: Compiler incorrectly returns information about the template parameter which is not yet fully instantiated (ie, sizeof will return nonsense rather than the actual size).
Problem conclusion
Fixed how templates are instantiated so that this scenario is considered, and correct program output is observed.
Temporary fix
Comments
APAR Information
APAR number
LI73990
Reported component name
XL C/C++ SLES10
Reported component ID
5724S7300
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-12-17
Closed date
2008-12-17
Last modified date
2008-12-17
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/C++ SLES10
Fixed component ID
5724S7300
Applicable component levels
R900 PSN IZ29604
UP06/09/13
[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSJT9L","label":"XL C\/C++"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.0","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
Document Information
Modified date:
15 October 2021