[Bug debug/49459] attribute((mode(byte))) in a typedef produces wrong debug information

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49459

Paul Koning <pkoning at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.1.2

--- Comment #2 from Paul Koning <pkoning at gcc dot gnu.org> 2011-10-19 17:00:09 UTC ---
I see the same issue as far back as 4.1.2.

As I mentioned, it works in 3.3.3.  I compared readelf outputs.  The difference
is that in 3.3.3 the typedef points to a DW_TAG_base_type entry, which supplies
the size of 1 -- but also makes the type look like "unsigned char" instead of
enum.  That at least doesn't break the debugger but it isn't ideal either.


 <1><6d>: Abbrev Number: 6 (DW_TAG_variable)
    <6e>   DW_AT_name        : foo    
    <72>   DW_AT_decl_file   : 1    
    <73>   DW_AT_decl_line   : 4    
    <74>   DW_AT_type        : <0x3a>    
    <78>   DW_AT_external    : 1    
    <79>   DW_AT_location    : 5 byte block: 3 1 0 0 0     (DW_OP_addr: 1)

 <1><3a>: Abbrev Number: 4 (DW_TAG_typedef)
    <3b>   DW_AT_name        : e1    
    <3e>   DW_AT_decl_file   : 1    
    <3f>   DW_AT_decl_line   : 1    
    <40>   DW_AT_type        : <0x44>    
 <1><44>: Abbrev Number: 5 (DW_TAG_base_type)
    <45>   DW_AT_name        : (indirect string, offset: 0x0): unsigned char    
    <49>   DW_AT_byte_size   : 1    
    <4a>   DW_AT_encoding    : 8    (unsigned char)