Re: DW_TAG_imported_declaration DW_TAG_base_type w/o DW_AT_name [Re: using directive patch]

[Sami Wagiaalla <swagiaal@redhat.com>]

> Results in:
> 	die = <8c>
> 	imported_die = <3b>
> 	imported_name = "B"
> so the import gets processed, doesn't it?

Yes agreed... bad code example.

> Do you have a reproducer of incorrect GDB behavior?

Yes. Upon further digging I found the gcc bug.
Here is a much better example:

namespace A{
   typedef int B;
}

int main(){
   using A::B;
   B b;
   return b;
}

...
  <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration)
     <52>   DW_AT_decl_file   : 1
     <53>   DW_AT_decl_line   : 6
     <54>   DW_AT_import      : <0x75>
  <2><58>: Abbrev Number: 4 (DW_TAG_typedef)
     <59>   DW_AT_name        : B
     <5b>   DW_AT_decl_file   : 1
     <5c>   DW_AT_decl_line   : 2
     <5d>   DW_AT_type        : <0x6e>
...
  <1><75>: Abbrev Number: 7 (DW_TAG_base_type)
     <76>   DW_AT_byte_size   : 4
     <77>   DW_AT_encoding    : 5        (signed)

Import from line 6 is not importing 0x75 as gcc reports. It is importing 
0x58. In which case the imported_name would be B.

Will open a gcc bug :)

Sami