------- 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
