[Bug lto/46796] debug info missing builtin type names on darwin

[mrs at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46796

--- Comment #2 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> 2010-12-03 
23:45:15 UTC ---
>From dwarfdump of the good .o file:

0x000000a1:         TAG_formal_parameter [3]  
                     AT_name( "i" )
                     AT_decl_file( "/Users/mrs/net/gcc-darwinLTO/gcc/t.c" )
                     AT_decl_line( 5 )
                     AT_type( {0x000000ae} ( int ) )
                     AT_location( fbreg -20 )

0x000000ae:     TAG_base_type [4]  
                 AT_byte_size( 0x04 )
                 AT_encoding( DW_ATE_signed )
                 AT_name( "int" )

and for the bad version:

0x00000110:         TAG_formal_parameter [5]  
                     AT_name( "i" )
                     AT_decl_file( "/Users/mrs/net/gcc-darwinLTO/gcc/t.c" )
                     AT_decl_line( 5 )
                     AT_type( {0x000000ea} ( __unknown__ ) )
                     AT_location( fbreg -20 )

0x000000ea:     TAG_base_type [3]  
                 AT_byte_size( 0x04 )
                 AT_encoding( DW_ATE_signed )
                 AT_name( "__unknown__" )