The section .debug_info contains: Compilation Unit @ offset 0x0: Length: 118 Version: 2 Abbrev Offset: 0 Pointer Size: 4 <0>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_stmt_list : 0 DW_AT_low_pc : 0x8048378 DW_AT_high_pc : 0x804839a DW_AT_name : ../sysdeps/i386/elf/start.S DW_AT_comp_dir : /build/buildd/glibc-2.3.6/build-tree/glibc-2.3.6/csu DW_AT_producer : GNU AS 2.16.91 DW_AT_language : 32769 (MIPS assembler) Compilation Unit @ offset 0x7a: Length: 141 Version: 2 Abbrev Offset: 20 Pointer Size: 4 <0><85>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_stmt_list : 0x5b DW_AT_high_pc : 0x804839c DW_AT_low_pc : 0x804839c DW_AT_producer : (indirect string, offset: 0x62): GNU C 3.4.6 (Ubuntu 3.4.6-1ubuntu2) DW_AT_language : 1 (ANSI C) DW_AT_name : (indirect string, offset: 0x0): init.c DW_AT_comp_dir : (indirect string, offset: 0x11): /build/buildd/glibc-2.3.6/build-tree/glibc-2.3.6/csu <1><9f>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x90): unsigned int DW_AT_byte_size : 4 DW_AT_encoding : 7 (unsigned) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x54): unsigned char DW_AT_byte_size : 1 DW_AT_encoding : 8 (unsigned char) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x9d): short unsigned int DW_AT_byte_size : 2 DW_AT_encoding : 7 (unsigned) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x8b): long unsigned int DW_AT_byte_size : 4 DW_AT_encoding : 7 (unsigned) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x56): signed char DW_AT_byte_size : 1 DW_AT_encoding : 6 (signed char) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x7): short int DW_AT_byte_size : 2 DW_AT_encoding : 5 (signed) <1>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : int DW_AT_byte_size : 4 DW_AT_encoding : 5 (signed) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x46): long long int DW_AT_byte_size : 8 DW_AT_encoding : 5 (signed) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x86): long long unsigned int DW_AT_byte_size : 8 DW_AT_encoding : 7 (unsigned) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x4b): long int DW_AT_byte_size : 4 DW_AT_encoding : 5 (signed) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x90): unsigned int DW_AT_byte_size : 4 DW_AT_encoding : 7 (unsigned) <1>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0x5d): char DW_AT_byte_size : 1 DW_AT_encoding : 6 (signed char) <1>: Abbrev Number: 4 (DW_TAG_variable) DW_AT_name : (indirect string, offset: 0xb0): _IO_stdin_used DW_AT_decl_file : 1 DW_AT_decl_line : 25 DW_AT_type : <105> DW_AT_external : 1 DW_AT_location : 5 byte block: 3 68 85 4 8 (DW_OP_addr: 8048568) <1><105>: Abbrev Number: 5 (DW_TAG_const_type) DW_AT_type : Compilation Unit @ offset 0x10b: Length: 140 Version: 2 Abbrev Offset: 86 Pointer Size: 4 <0><116>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_stmt_list : 0x82 DW_AT_name : /build/buildd/glibc-2.3.6/build-tree/i386-libc/csu/crti.S DW_AT_comp_dir : /build/buildd/glibc-2.3.6/build-tree/glibc-2.3.6/csu DW_AT_producer : GNU AS 2.16.91 DW_AT_language : 32769 (MIPS assembler) Compilation Unit @ offset 0x19b: Length: 414 Version: 2 Abbrev Offset: 102 Pointer Size: 4 <0><1a6>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_stmt_list : 0x12f DW_AT_high_pc : 0x804847e DW_AT_low_pc : 0x804841c DW_AT_producer : GNU C++ 3.4.6 (Ubuntu 3.4.6-1ubuntu2) DW_AT_language : 4 (C++) DW_AT_name : constants.c DW_AT_comp_dir : /home/nly99047/sigma/gdb <1><1ff>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0xbf): unsigned int DW_AT_byte_size : 4 DW_AT_encoding : 7 (unsigned) <1><206>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : unsigned char DW_AT_byte_size : 1 DW_AT_encoding : 8 (unsigned char) <1><217>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : short unsigned int DW_AT_byte_size : 2 DW_AT_encoding : 7 (unsigned) <1><22d>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : long unsigned int DW_AT_byte_size : 4 DW_AT_encoding : 7 (unsigned) <1><242>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : signed char DW_AT_byte_size : 1 DW_AT_encoding : 6 (signed char) <1><251>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : short int DW_AT_byte_size : 2 DW_AT_encoding : 5 (signed) <1><25e>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : int DW_AT_byte_size : 4 DW_AT_encoding : 5 (signed) <1><265>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : long long int DW_AT_byte_size : 8 DW_AT_encoding : 5 (signed) <1><276>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : long long unsigned int DW_AT_byte_size : 8 DW_AT_encoding : 7 (unsigned) <1><290>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : long int DW_AT_byte_size : 4 DW_AT_encoding : 5 (signed) <1><29c>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_name : (indirect string, offset: 0xbf): unsigned int DW_AT_byte_size : 4 DW_AT_encoding : 7 (unsigned) <1><2a3>: Abbrev Number: 3 (DW_TAG_base_type) DW_AT_name : char DW_AT_byte_size : 1 DW_AT_encoding : 6 (signed char) <1><2ab>: Abbrev Number: 4 (DW_TAG_typedef) DW_AT_name : UInt16 DW_AT_decl_file : 1 DW_AT_decl_line : 4 DW_AT_type : <217> <1><2b9>: Abbrev Number: 5 (DW_TAG_subprogram) DW_AT_external : 1 DW_AT_name : main DW_AT_decl_file : 1 DW_AT_decl_line : 12 DW_AT_type : <25e> DW_AT_low_pc : 0x804841c DW_AT_high_pc : 0x804847e DW_AT_frame_base : 1 byte block: 55 (DW_OP_reg5) <1><2d0>: Abbrev Number: 6 (DW_TAG_namespace) DW_AT_sibling : <311> DW_AT_name : :: DW_AT_decl_file : 2 DW_AT_decl_line : 0 <2><2da>: Abbrev Number: 7 (DW_TAG_variable) DW_AT_name : c_uint16 DW_AT_decl_file : 1 DW_AT_decl_line : 5 DW_AT_type : <311> DW_AT_declaration : 1 DW_AT_const_value : 254 <2><2ec>: Abbrev Number: 8 (DW_TAG_variable) DW_AT_name : g_uint16 DW_AT_decl_file : 1 DW_AT_decl_line : 6 DW_AT_type : <2ab> DW_AT_external : 1 DW_AT_declaration : 1 <2><2fe>: Abbrev Number: 7 (DW_TAG_variable) DW_AT_name : c_ushort DW_AT_decl_file : 1 DW_AT_decl_line : 8 DW_AT_type : <32c> DW_AT_declaration : 1 DW_AT_const_value : 254 <1><311>: Abbrev Number: 9 (DW_TAG_const_type) DW_AT_type : <2ab> <1><316>: Abbrev Number: 10 (DW_TAG_variable) DW_AT_specification: <2da> DW_AT_location : 5 byte block: 3 96 85 4 8 (DW_OP_addr: 8048596) <1><321>: Abbrev Number: 10 (DW_TAG_variable) DW_AT_specification: <2ec> DW_AT_location : 5 byte block: 3 8 97 4 8 (DW_OP_addr: 8049708) <1><32c>: Abbrev Number: 9 (DW_TAG_const_type) DW_AT_type : <217> <1><331>: Abbrev Number: 10 (DW_TAG_variable) DW_AT_specification: <2fe> DW_AT_location : 5 byte block: 3 98 85 4 8 (DW_OP_addr: 8048598) Compilation Unit @ offset 0x33d: Length: 140 Version: 2 Abbrev Offset: 241 Pointer Size: 4 <0><348>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_stmt_list : 0x181 DW_AT_name : /build/buildd/glibc-2.3.6/build-tree/i386-libc/csu/crtn.S DW_AT_comp_dir : /build/buildd/glibc-2.3.6/build-tree/glibc-2.3.6/csu DW_AT_producer : GNU AS 2.16.91 DW_AT_language : 32769 (MIPS assembler)