[RFC] introduction of a new language hook for DWARF2 names

[Nicolas Setton]

Hello,

Right now, DWARF2 variable names are computed using  
decl_printable_name (from dwarf2out.c):

-----------------------------------------------------------------------
/* The DWARF2 pubname for a nested thingy looks like "A::f".  The
    output of lang_hooks.decl_printable_name for C++ looks like
    "A::f(int)".  Let's drop the argument list, and maybe the scope.  */

static const char *
dwarf2_name (tree decl, int scope)
{
   return lang_hooks.decl_printable_name (decl, scope ? 1 : 0);
}
-----------------------------------------------------------------------

This is not very convenient for Ada, where the dwarf2 name has to be  
different from the printable_name. Also, I imagine other languages  
would benefit from the possibility of distinguishing dwarf2 names  
from printable names.

Therefore, I'd like to suggest introducing a new language hook, say  
decl_dwarf2_name, which would have the same profile as  
decl_printable_name, and which would be defined to  
decl_printable_name by default.

Do you think I could suggest a patch along those lines?

Thanks a lot for your time,

Nicolas