[Bug c++/20805] Another debug info emitting bug

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

------- Additional Comments From jakub at gcc dot gnu dot org  2005-04-07 12:13 -------
int *v;

int *
foo ()
{
  extern int *v;
  return v;
}

The section .debug_info contains:

  Compilation Unit @ 0:
   Length:        208
   Version:       2
   Abbrev Offset: 0
   Pointer Size:  8
 <0><b>: Abbrev Number: 1 (DW_TAG_compile_unit)
     DW_AT_stmt_list   : 0
     DW_AT_high_pc     : 0xd
     DW_AT_low_pc      : 0
     DW_AT_producer    : GNU C++ 4.1.0 20050405 (experimental)
     DW_AT_language    : 4      (C++)
     DW_AT_name        : /tmp/23.ii
 <1><52>: Abbrev Number: 2 (DW_TAG_subprogram)
     DW_AT_sibling     : <9a>
     DW_AT_external    : 1
     DW_AT_name        : foo
     DW_AT_decl_file   : 1
     DW_AT_decl_line   : 4
     DW_AT_MIPS_linkage_name: _Z3foov
     DW_AT_type        : <9a>
     DW_AT_low_pc      : 0
     DW_AT_high_pc     : 0xd
     DW_AT_frame_base  : 1 byte block: 56       (DW_OP_reg6)
 <2><7c>: Abbrev Number: 3 (DW_TAG_lexical_block)
     DW_AT_low_pc      : 0x4
     DW_AT_high_pc     : 0xb
 <3><8d>: Abbrev Number: 4 (DW_TAG_variable)
     DW_AT_name        : v
     DW_AT_decl_file   : 1
     DW_AT_decl_line   : 6
     DW_AT_type        : <9a>
     DW_AT_external    : 1
     DW_AT_declaration : 1
 <1><9a>: Abbrev Number: 5 (DW_TAG_pointer_type)
     DW_AT_byte_size   : 8
     DW_AT_type        : <a0>
 <1><a0>: Abbrev Number: 6 (DW_TAG_base_type)
     DW_AT_name        : int
     DW_AT_byte_size   : 4
     DW_AT_encoding    : 5      (signed)
 <1><a7>: Abbrev Number: 7 (DW_TAG_namespace)
     DW_AT_sibling     : <c4>
     DW_AT_name        : ::
     DW_AT_decl_file   : 2
     DW_AT_decl_line   : 0
 <2><b1>: Abbrev Number: 4 (DW_TAG_variable)
     DW_AT_name        : v
     DW_AT_decl_file   : 1
     DW_AT_decl_line   : 6
     DW_AT_type        : <9a>
     DW_AT_external    : 1
     DW_AT_declaration : 1
 <2><bc>: Abbrev Number: 8 (DW_TAG_variable)
     DW_AT_specification: <8d>
     DW_AT_decl_line   : 1
     DW_AT_declaration : 1
 <1><c4>: Abbrev Number: 9 (DW_TAG_variable)
     DW_AT_specification: <bc>
     DW_AT_location    : 9 byte block: 3 0 0 0 0 0 0 0 0        (DW_OP_addr: 0)

The gdb ICE happens when trying too lookup the 0x8d specification.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20805