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From: "chihin.ko at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/56251] New: no DW_AT_const_value  for static const member of a template class
Date: Fri, 08 Feb 2013 04:06:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56251

             Bug #: 56251
           Summary: no DW_AT_const_value  for static const member of a
                    template class
    Classification: Unclassified
           Product: gcc
           Version: 4.6.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: chihin.ko@oracle.com


If a static const member is in template class, there is no DW_AT_const_value
info,
compare these tvalue/value


< 2><0x0000005a>      DW_TAG_member
                        DW_AT_name                  "value"
                        DW_AT_decl_file             0x00000001 t.cc
                        DW_AT_decl_line             0x00000009
                        DW_AT_type                  <0x00000069>
                        DW_AT_external              yes(1)
                        DW_AT_declaration           yes(1)
                        DW_AT_const_value           200(as signed = -56)  <===
const value
< 1><0x00000069>    DW_TAG_const_type
                      DW_AT_type                  <0x0000002c>

---------------------------------------------------------------------------------

< 2><0x0000007a>      DW_TAG_member
                        DW_AT_name                  "tvalue"
                        DW_AT_decl_file             0x00000001 t.cc
                        DW_AT_decl_line             0x00000005
                        DW_AT_type                  <0x00000069>
                        DW_AT_external              yes(1)
                        DW_AT_declaration           yes(1)
                                                                    <==== no
const value
< 2><0x00000087>      DW_TAG_template_type_parameter
                        DW_AT_name                  "T0"


cat t.cc

#include <stdio.h>

template<class T0, class T1>
struct TCC {
        static const T0 tvalue = 100;
};

struct CC {
        static const int value = 200;
};

int main()
{
    CC cc;
    TCC<int, int> tcc;

        printf("tcc.value1 = %u \n", tcc.tvalue);
        printf("cc.value1 = %u \n", cc.value);
}