The section .debug_info contains:
Compilation Unit @ .*:
Length: .*
Version: 2
Abbrev Offset: 0
Pointer Size: 4
<.><.*>: Abbrev Number: .* \(DW_TAG_compile_unit\)
DW_AT_name : .*/testprog.c
DW_AT_comp_dir : .*/binutils
DW_AT_producer : GNU C .*
DW_AT_language : 1 \(ANSI C\)
DW_AT_low_pc : 0
DW_AT_high_pc : .*
DW_AT_stmt_list : 0
<.><.*>: Abbrev Number: 2 \(DW_TAG_subprogram\)
DW_AT_external : 1
DW_AT_name : fn
DW_AT_decl_file : 1
DW_AT_decl_line : 10
DW_AT_type : .*
DW_AT_low_pc : 0
DW_AT_high_pc : .*
DW_AT_frame_base : 1 byte block: .*
<.><.*>: Abbrev Number: 3 \(DW_TAG_base_type\)
DW_AT_name : int
DW_AT_byte_size : 4
DW_AT_encoding : 5 \(signed\)
<.><.*>: Abbrev Number: 4 \(DW_TAG_subprogram\)
DW_AT_sibling : .*
DW_AT_external : 1
DW_AT_name : main
DW_AT_decl_file : 1
DW_AT_decl_line : 16
DW_AT_type : .*
DW_AT_low_pc : .*
DW_AT_high_pc : .*
DW_AT_frame_base : 1 byte block: .*
<.><.*>: Abbrev Number: 5 \(DW_TAG_lexical_block\)
DW_AT_low_pc : .*
DW_AT_high_pc : .*
<.><.*>: Abbrev Number: 6 \(DW_TAG_variable\)
DW_AT_name : common
DW_AT_decl_file : 1
DW_AT_decl_line : 3
DW_AT_type : <.*>
DW_AT_external : 1
DW_AT_location : 5 byte block: 3 0 0 0 0 \(DW_OP_addr: 0\)
<.><.*>: Abbrev Number: 6 \(DW_TAG_variable\)
DW_AT_name : global
DW_AT_decl_file : 1
DW_AT_decl_line : 4
DW_AT_type : <.*>
DW_AT_external : 1
DW_AT_location : 5 byte block: 3 0 0 0 0 \(DW_OP_addr: 0\)
<.><.*>: Abbrev Number: 7 \(DW_TAG_variable\)
DW_AT_name : local
DW_AT_decl_file : 1
DW_AT_decl_line : 5
DW_AT_type : <.*>
DW_AT_location : 5 byte block: 3 . 0 0 . \(DW_OP_addr: .\)
<.><.*>: Abbrev Number: 8 \(DW_TAG_array_type\)
DW_AT_sibling : <.*>
DW_AT_type : <.*>
<.><.*>: Abbrev Number: 9 \(DW_TAG_subrange_type\)
DW_AT_upper_bound : 6
<.><.*>: Abbrev Number: 3 \(DW_TAG_base_type\)
DW_AT_name : char
DW_AT_byte_size : 1
DW_AT_encoding : 8 \(unsigned char\)
<.><.*>: Abbrev Number: 7 \(DW_TAG_variable\)
DW_AT_name : string
DW_AT_decl_file : 1
DW_AT_decl_line : 6
DW_AT_type : <.*>
DW_AT_location : 5 byte block: 3 . 0 0 . \(DW_OP_addr: .\)