binutils readelf -wi: <4><a2>: Abbrev Number: 26 (DW_TAG_inlined_subroutine) <a3> DW_AT_abstract_origin: <0x5a> <a7> DW_AT_low_pc : 0x400590 <ab> DW_AT_high_pc : 0x4 <af> DW_AT_call_file : 1 <b0> DW_AT_call_line : 20 <b1> DW_AT_sibling : <0xb8> <2><b8>: Abbrev Number: 35 (DW_TAG_inlined_subroutine) <b9> DW_AT_abstract_origin: <0x5a> <bd> DW_AT_low_pc : 0x400590 <c1> DW_AT_high_pc : 0x4 <c5> DW_AT_call_file : 1 <c6> DW_AT_call_line : 29 <b1> DW_AT_sibling points to the next DIE - but that DIE is 2 levels upwards - definitely not a sibling. This confuses GDB up to a crash: ==32143== ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6024000198ac at pc 0xb4d104 bp 0x7fff63e96e70 sp 0x7fff63e96e60 READ of size 1 at 0x6024000198ac thread T0 #0 0xb4d103 in read_unsigned_leb128 (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0xb4d103) #1 0xb15f3c in peek_die_abbrev (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0xb15f3c) #2 0xb46185 in load_partial_dies (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0xb46185) #3 0xb103fb in process_psymtab_comp_unit_reader (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0xb103fb) #4 0xb0d2a9 in init_cutu_and_read_dies (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0xb0d2a9) #5 0xb1115f in process_psymtab_comp_unit (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0xb1115f) #6 0xb1235f in dwarf2_build_psymtabs_hard (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0xb1235f) #7 0xb05536 in dwarf2_build_psymtabs (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0xb05536) #8 0x86d5a5 in read_psyms (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0x86d5a5) #9 0x9b1c37 in require_partial_symbols (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0x9b1c37) #10 0x9bf2d0 in read_symbols (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0x9bf2d0) #11 0x9c014c in syms_from_objfile_1 (/home/jkratoch/redhat/gdb-clean/gdb/gdb+0x9c014c) gdb/testsuite/ 2014-02-25 Jan Kratochvil <jan.kratochvil@redhat.com> Fix dw2-icycle.exp -fsanitize=address GDB crash. * gdb.dwarf2/dw2-icycle.S: Remove all DW_AT_sibling. Message-ID: <20140224201011.GA28926@host2.jankratochvil.net>
