[PING][PATCH][gdb/symtab] Support DW_AT_main_subprogram with -readnow.

[Tom de Vries <tdevries@suse.de>]

On 05-05-19 12:25, Tom de Vries wrote:
> Hi,
> 
> DW_AT_main_subprogram is supported in normal mode in read_partial_die, but not
> in -readnow mode.
> 
> Fix this by adding support for DW_AT_main_subprogram in read_func_scope.
> 
> Tested on x86_64-linux with native and RFC target board readnow (
> https://sourceware.org/ml/gdb-patches/2019-05/msg00073.html ).
> 
> OK for trunk?
> 
> Thanks,
> - Tom
> 
> [gdb/symtab] Support DW_AT_main_subprogram with -readnow.
> 
> gdb/ChangeLog:
> 
> 2019-05-05  Tom de Vries  <tdevries@suse.de>
> 
> 	PR symtab/16264
> 	PR symtab/24517
> 	* dwarf2read.c (read_func_scope): Handle DW_AT_main_subprogram.
> 
> ---
>  gdb/dwarf2read.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
> index b5ea9e3cc0..3e611b0842 100644
> --- a/gdb/dwarf2read.c
> +++ b/gdb/dwarf2read.c
> @@ -13741,6 +13741,10 @@ read_func_scope (struct die_info *die, struct dwarf2_cu *cu)
>    newobj->name = new_symbol (die, read_type_die (die, cu), cu,
>  			     (struct symbol *) templ_func);
>  
> +  if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu))
> +    set_objfile_main_name (objfile, SYMBOL_LINKAGE_NAME (newobj->name),
> +			   cu->language);
> +
>    /* If there is a location expression for DW_AT_frame_base, record
>       it.  */
>    attr = dwarf2_attr (die, DW_AT_frame_base, cu);
>