[Bug c++/61463] New: g++ does not emit DW_AT_mutable

["tromey at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61463

            Bug ID: 61463
           Summary: g++ does not emit DW_AT_mutable
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tromey at gcc dot gnu.org

DW_AT_mutable is defined by DWARF but g++ does not seem to emit it.

I tried

struct K
{
  mutable int x;
};

K k;

For "x" I see:

 <2><23>: Abbrev Number: 3 (DW_TAG_member)
    <24>   DW_AT_name        : x        
    <26>   DW_AT_decl_file   : 1        
    <27>   DW_AT_decl_line   : 3        
    <28>   DW_AT_type        : <0x2e>   
    <2c>   DW_AT_data_member_location: 0