Re: [Patch][C++/debug] SDB_DEBUG (-gcoff) vs record_builtin_type vs GAS - refresh

[Zack Weinberg <zack at codesourcery dot com>]

Danny Smith <dannysmith@clear.net.nz> writes:

> A grep for DECL_IS_BUILTIN finds the macro is always used as its name
> indicates.  The only things that I could find that might suggest
> a problem with its usage in sdbout.c are these in
>
> dwarf2out.c (dwarf2out_decl):
>
>       /* Don't bother trying to generate any DIEs to represent any of
> the
>   normal built-in types for the language we are compiling.  */
>       if (DECL_IS_BUILTIN (decl))
>  {
>    /* OK, we need to generate one for `bool' so GDB knows what type
>       comparisons have.  */
>    if ((get_AT_unsigned (comp_unit_die, DW_AT_language)
>         == DW_LANG_C_plus_plus)
>        && TREE_CODE (TREE_TYPE (decl)) == BOOLEAN_TYPE
>        && ! DECL_IGNORED_P (decl))
>      modified_type_die (TREE_TYPE (decl), 0, 0, NULL);
>
>    return;
>  }
>
> Should we make a special exception for 'bool' in sdbout.c too?

I wouldn't worry about it at this point.  Or, try it and see which way
the GDB test results are better.

> and this comment in function.c (init_function_start)
>   /* ... Also tell final how to output a linenum before the
>      function prologue.  Note linenums could be missing, e.g. when
>      compiling a Java .class file.  */
>   if (! DECL_IS_BUILTIN (subr))
>     emit_line_note (DECL_SOURCE_LOCATION (subr));

This only applies to FUNCTION_DECLs.

Patch is OK.

zw