The section .debug_info contains: Compilation Unit @ offset 0x0: Length: 127 Version: 2 Abbrev Offset: 0 Pointer Size: 8 <0>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_stmt_list : 0 DW_AT_low_pc : 0x402800 DW_AT_high_pc : 0x40282b DW_AT_name : ../sysdeps/x86_64/elf/start.S DW_AT_comp_dir : /tmp/buildd/glibc-2.3.6.ds1/build-tree/glibc-2.3.6/csu DW_AT_producer : GNU AS 2.17 DW_AT_language : 32769 (MIPS assembler) Compilation Unit @ offset 0x83: Length: 142 Version: 2 Abbrev Offset: 21 Pointer Size: 8 <0><8e>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_stmt_list : 0x7e DW_AT_name : /tmp/buildd/glibc-2.3.6.ds1/build-tree/amd64-libc/csu/crti.S DW_AT_comp_dir : /tmp/buildd/glibc-2.3.6.ds1/build-tree/glibc-2.3.6/csu DW_AT_producer : GNU AS 2.17 DW_AT_language : 32769 (MIPS assembler) Compilation Unit @ offset 0x115: Length: 179 Version: 2 Abbrev Offset: 37 Pointer Size: 8 <0><120>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_comp_dir : /home/fxcoudert/devel/debug2/irun DW_AT_language : 14 (Fortran 95) DW_AT_name : z.f90 DW_AT_producer : Intel (R) Fortran Compiler Fixes RangesRelative DW_AT_stmt_list : 0x11b <1><17f>: Abbrev Number: 2 (DW_TAG_base_type) DW_AT_byte_size : 0 DW_AT_encoding : 5 (signed) DW_AT_name : void <1><187>: Abbrev Number: 3 (DW_TAG_subprogram) DW_AT_decl_line : 1 DW_AT_decl_column : 12 DW_AT_decl_file : 1 DW_AT_inline : 0 (not inlined) DW_AT_accessibility: 1 (public) DW_AT_type : <17f> DW_AT_prototyped : 0 DW_AT_name : foo DW_AT_low_pc : 0x4028f0 DW_AT_high_pc : 0x4028f6 DW_AT_external : 1 <1><1a7>: Abbrev Number: 4 (DW_TAG_subprogram) DW_AT_decl_line : 4 DW_AT_decl_column : 9 DW_AT_decl_file : 1 DW_AT_calling_convention: 2 (program) DW_AT_inline : 0 (not inlined) DW_AT_accessibility: 1 (public) DW_AT_type : <17f> DW_AT_prototyped : 0 DW_AT_name : bar DW_AT_low_pc : 0x4028f6 DW_AT_high_pc : 0x402910 DW_AT_external : 1 Compilation Unit @ offset 0x1cc: Length: 142 Version: 2 Abbrev Offset: 120 Pointer Size: 8 <0><1d7>: Abbrev Number: 1 (DW_TAG_compile_unit) DW_AT_stmt_list : 0x15f DW_AT_name : /tmp/buildd/glibc-2.3.6.ds1/build-tree/amd64-libc/csu/crtn.S DW_AT_comp_dir : /tmp/buildd/glibc-2.3.6.ds1/build-tree/glibc-2.3.6/csu DW_AT_producer : GNU AS 2.17 DW_AT_language : 32769 (MIPS assembler)