Compared to good ones(without -flto option), the reason for this issue seems debug-dump of ELF file is missing File Name Table and Line Number Statements, which addr2line will read. With -flto, doesn't have these fields in so. Without flto, they are there. The File Name Table (offset 0xb2): Entry Dir Time Size Name 1 1 0 0 test.c 2 2 0 0 stddef.h 3 3 0 0 types.h 4 3 0 0 libio.h 5 4 0 0 stdio.h 6 3 0 0 sys_errlist.h Line Number Statements: [0x000000fb] Extended opcode 2: set Address to 0x65a [0x00000106] Special opcode 7: advance Address by 0 to 0x65a and Line by 2 to 3 [0x00000107] Special opcode 62: advance Address by 4 to 0x65e and Line by 1 to 4 [0x00000108] Special opcode 174: advance Address by 12 to 0x66a and Line by 1 to 5 [0x00000109] Special opcode 49: advance Address by 3 to 0x66d and Line by 2 to 7 [0x0000010a] Special opcode 62: advance Address by 4 to 0x671 and Line by 1 to 8 [0x0000010b] Special opcode 146: advance Address by 10 to 0x67b and Line by 1 to 9 [0x0000010c] Advance PC by 2 to 0x67d [0x0000010e] Extended opcode 1: End of Sequence On Thu, Oct 15, 2020 at 5:06 PM Jiany Wu <wujianyue000@xxxxxxxxx> wrote: > # /usr/bin/addr2line -e libtime_opt.so -f 0x65a > foo > ??:? > > # readelf -a libtime_opt.so | grep foo > 000000201020 000700000007 R_X86_64_JUMP_SLO 000000000000065a foo + 0 > 7: 000000000000065a 18 FUNC GLOBAL DEFAULT 12 foo > 46: 000000000000065a 18 FUNC GLOBAL DEFAULT 12 foo > > # objdump -dlSC libtime_opt.so --start-address=0x650 --stop-address=0x65f > > libtime_opt.so: file format elf64-x86-64 > > > Disassembly of section .text: > > 0000000000000650 <frame_dummy>: > frame_dummy(): > 650: 55 push %rbp > 651: 48 89 e5 mov %rsp,%rbp > 654: 5d pop %rbp > 655: e9 66 ff ff ff jmpq 5c0 <register_tm_clones> > > 000000000000065a <foo>: > foo(): > 65a: 55 push %rbp > 65b: 48 89 e5 mov %rsp,%rbp > 65e: 48 rex.W > > On Thu, Oct 15, 2020 at 4:55 PM Jiany Wu <wujianyue000@xxxxxxxxx> wrote: > >> Is it a bug? Can I create an account in bugzilla? Thanks in advance:) >> >> readelf and objdump works fine, only addr2line is not working. >> >> On Thu, Oct 15, 2020 at 4:53 PM Jiany Wu <wujianyue000@xxxxxxxxx> wrote: >> >>> symbol will appear when I remove flto in CMakeLists.txt. But I have to >>> enable flto.. >>> >>> On Thu, Oct 15, 2020 at 4:40 PM Jiany Wu <wujianyue000@xxxxxxxxx> wrote: >>> >>>> I tried to reproduce with ubuntu, with this zip. >>>> >>>> Could you please give a hand about this issue? thanks indeed, seems no >>>> matter what gcc version above 9.1.0, will also have this issue. >>>> >>>> ## Reproduce step >>>> cd build >>>> cmake .. >>>> make >>>> readelf -a libtime_opt.so | grep foo >>>> >>>> output is: >>>> 00000201020 000a00000007 R_X86_64_JUMP_SLO 000000000000066a >>>> _Z3foov + 0 >>>> 10: 000000000000066a 18 FUNC GLOBAL DEFAULT 12 _Z3foov >>>> 49: 000000000000066a 18 FUNC GLOBAL DEFAULT 12 _Z3foov >>>> >>>> addr2line -e libtime_opt.so -f 0x66a >>>> >>>> output is: >>>> _Z3foov >>>> ??:? >>>> >>>> ./Jianyue >>>> >>>> On Wed, Oct 14, 2020 at 5:24 PM Jiany Wu <wujianyue000@xxxxxxxxx> >>>> wrote: >>>> >>>>> Seems gcc help is missing, add back gcc help >>>>> >>>>> On Wed, Oct 14, 2020 at 5:22 PM Jiany Wu <wujianyue000@xxxxxxxxx> >>>>> wrote: >>>>> >>>>>> When try to check Line Table, seems there are many errors >>>>>> saying There is a hole. I checked the OK version, seems also has holes, but >>>>>> not so many holes;-) >>>>>> >>>>>> # readelf --debug-dump=loc libfoo.so | head >>>>>> readelf: libfoo.so: Warning: Location lists in .debug_loc >>>>>> section start at 0x6 >>>>>> readelf: libfoo.so: Warning: There is a hole [0x52 - 0x54] in . >>>>>> debug_loc section. >>>>>> readelf: libfoo.so: Warning: There is a hole [0x77 - 0x7d] in . >>>>>> debug_loc section. >>>>>> readelf: libfoo.so: Warning: There is a hole [0xc6 - 0xd2] in . >>>>>> debug_loc section. >>>>>> Contents of the .debug_loc section: >>>>>> readelf: libfoo.so: Warning: >>>>>> There is a hole [0x157 - 0x163] in .debug_loc section. >>>>>> Offset Begin End Expression >>>>>> 00000006 0000000000257a70 0000000000257a81 (DW_OP_reg5 (rdi)) >>>>>> 00000019 0000000000257a81 0000000000257aae (DW_OP_reg6 (rbp)) >>>>>> 0000002c 0000000000257aae 0000000000257aaf >>>>>> (DW_OP_GNU_entry_value: (DW_OP_reg5 (rdi)); DW_OP_stack_value) >>>>>> 00000042 <End of list> >>>>>> readelf: libfoo.so: Warning: There is a hole [0x1fa - 0x202] in . >>>>>> debug_loc section. >>>>>> 00000054 0000000000257a8e 0000000000257a98 (DW_OP_reg3 (rbx)) >>>>>> 00000067 <End of list> >>>>>> 0000007d 0000000000257a7c 0000000000257a8e (DW_OP_reg3 (rbx)) >>>>>> readelf: libfoo.so: Warning: There is a hole [0x25e - 0x260] in . >>>>>> debug_loc section. >>>>>> >>>>>> On Wed, Oct 14, 2020 at 4:30 PM Jiany Wu <wujianyue000@xxxxxxxxx> >>>>>> wrote: >>>>>> >>>>>>> Also tried -flto=thin -ffat-lto-objects, result seems same, still >>>>>>> can't find file and line. >>>>>>> >>>>>>> On Wed, Oct 14, 2020 at 2:58 PM Jiany Wu <wujianyue000@xxxxxxxxx> >>>>>>> wrote: >>>>>>> >>>>>>>> x86_64-pc-linux-gnu-gcc *.a(many internal .a, checked, they all >>>>>>>> built with gcc 9.1.0) -ldpdk -Wl,--no-whole-archive -lz -llzma -lcurl -lssl >>>>>>>> -lcrypto -lcrypt -lcap -lpthread -lrt -lstdc++ -ldl -lm -lsctp -lpcap >>>>>>>> -lminizip -o libfoo.so >>>>>>>> >>>>>>>> >>>>>>>> On Wed, Oct 14, 2020 at 2:56 PM Jiany Wu <wujianyue000@xxxxxxxxx> >>>>>>>> wrote: >>>>>>>> >>>>>>>>> It has different static libraries, shared libraries, so >>>>>>>>> different GCC used, like 6.4.1(assume from other shared libraries), project >>>>>>>>> itself is using 9.1.0. >>>>>>>>> >>>>>>>>> On Wed, Oct 14, 2020 at 2:54 PM Jiany Wu <wujianyue000@xxxxxxxxx> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> I also tried to use -flto -fno-fat-lto-objects, but seems still >>>>>>>>>> not working. >>>>>>>>>> >>>>>>>>>> strings -a libfoo.so | grep GNU.*march >>>>>>>>>> GNU C17 9.1.0 -m64 -march=corei7 -g -O2 -O3 >>>>>>>>>> -feliminate-unused-debug-types -fPIC >>>>>>>>>> GNU C17 9.1.0 -m64 -march=corei7 -mavx2 -g -O2 -O3 >>>>>>>>>> -feliminate-unused-debug-types -fPIC >>>>>>>>>> GNU C17 9.1.0 -m64 -march=corei7 -g -O2 >>>>>>>>>> -feliminate-unused-debug-types -fPIC >>>>>>>>>> GNU C17 9.1.0 -m64 -march=corei7 -g -O2 -O3 >>>>>>>>>> -feliminate-unused-debug-types -fno-strict-aliasing -fPIC >>>>>>>>>> GNU C99 9.1.0 -m64 -march=corei7 -g -O2 -O3 -std=gnu99 >>>>>>>>>> -feliminate-unused-debug-types -fPIC >>>>>>>>>> GNU C17 9.1.0 -m64 -march=corei7 -g -O2 -O3 >>>>>>>>>> -feliminate-unused-debug-types -flax-vector-conversions -fPIC >>>>>>>>>> GNU C17 9.1.0 -m64 -march=corei7 -g -O2 -Ofast >>>>>>>>>> -feliminate-unused-debug-types -fno-prefetch-loop-arrays -fPIC >>>>>>>>>> GNU C17 9.1.0 -m64 -march=corei7 -g -g -O2 -O3 >>>>>>>>>> -feliminate-unused-debug-types -fPIC >>>>>>>>>> GNU C17 9.1.0 -P -m64 -march=tremont -mtune=tremont -mfpmath=sse >>>>>>>>>> -msse4.2 -ggdb3 -g3 -O3 -ftree-vectorize -fno-dwarf2-cfi-asm >>>>>>>>>> -funwind-tables -fPIC -ftls-model=initial-exec -flto -fno-fat-lto-objects >>>>>>>>>> -fno-strict-aliasing -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C++11 9.1.0 -P -m64 -march=tremont -mtune=tremont >>>>>>>>>> -mfpmath=sse -msse4.2 -ggdb3 -g3 -O3 -std=c++11 -fno-exceptions -fPIC >>>>>>>>>> -ftls-model=initial-exec -flto -fno-fat-lto-objects -fno-strict-aliasing >>>>>>>>>> -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C++98 9.1.0 -P -m64 -march=tremont -mtune=tremont >>>>>>>>>> -mfpmath=sse -msse4.2 -ggdb3 -g3 -O3 -std=c++98 -fPIC >>>>>>>>>> -ftls-model=initial-exec -flto -fno-fat-lto-objects -fno-strict-aliasing >>>>>>>>>> -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C17 9.1.0 -P -m64 -march=tremont -mtune=tremont -mfpmath=sse >>>>>>>>>> -msse4.2 -ggdb3 -g3 -O3 -fvisibility=hidden -ftree-vectorize >>>>>>>>>> -fno-dwarf2-cfi-asm -funwind-tables -fPIC -ftls-model=initial-exec -flto >>>>>>>>>> -fno-fat-lto-objects -fno-strict-aliasing -fasynchronous-unwind-tables >>>>>>>>>> -fmessage-length=0 >>>>>>>>>> GNU C++14 9.1.0 -P -m64 -march=tremont -mtune=tremont >>>>>>>>>> -mfpmath=sse -msse4.2 -ggdb3 -g3 -O3 -fvisibility=hidden -fPIC >>>>>>>>>> -ftls-model=initial-exec -flto -fno-fat-lto-objects -fno-strict-aliasing >>>>>>>>>> -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C++14 9.1.0 -P -m64 -march=tremont -mtune=tremont >>>>>>>>>> -mfpmath=sse -msse4.2 -ggdb3 -g3 -O3 -fPIC -ftls-model=initial-exec -flto >>>>>>>>>> -fno-fat-lto-objects -fno-strict-aliasing -fasynchronous-unwind-tables >>>>>>>>>> -fmessage-length=0 >>>>>>>>>> GNU C17 9.1.0 -P -m64 -march=tremont -mtune=tremont -mfpmath=sse >>>>>>>>>> -msse4.2 -ggdb3 -g3 -O3 -O0 -ftree-vectorize -fno-dwarf2-cfi-asm >>>>>>>>>> -funwind-tables -fPIC -ftls-model=initial-exec -flto -fno-fat-lto-objects >>>>>>>>>> -fno-strict-aliasing -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C17 9.1.0 -P -m64 -march=tremont -mtune=tremont -mfpmath=sse >>>>>>>>>> -msse4.2 -ggdb3 -g3 -O3 -fdefer-pop -fmerge-constants -fthread-jumps >>>>>>>>>> -fif-conversion -fif-conversion2 -fguess-branch-probability >>>>>>>>>> -fcprop-registers -foptimize-sibling-calls -fcse-follow-jumps >>>>>>>>>> -frerun-cse-after-loop -fgcse -fgcse-lm -fgcse-sm -fgcse-las >>>>>>>>>> -fdelete-null-pointer-checks -fexpensive-optimizations -fsched-interblock >>>>>>>>>> -fsched-spec -fcaller-saves -fpeephole2 -freorder-blocks >>>>>>>>>> -freorder-functions -funit-at-a-time -falign-functions -falign-jumps >>>>>>>>>> -falign-loops -falign-labels -fcrossjumping -finline-functions >>>>>>>>>> -ftree-vectorize -fno-dwarf2-cfi-asm -funwind-tables -fPIC >>>>>>>>>> -ftls-model=initial-exec -flto -fno-fat-lto-objects -fno-strict-aliasing >>>>>>>>>> -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C11 9.1.0 -P -m64 -march=tremont -mtune=tremont -mfpmath=sse >>>>>>>>>> -msse4.2 -ggdb3 -g3 -O3 -std=gnu11 -ftree-vectorize -fno-dwarf2-cfi-asm >>>>>>>>>> -funwind-tables -fPIC -ftls-model=initial-exec -flto -fno-fat-lto-objects >>>>>>>>>> -fno-strict-aliasing -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C++11 9.1.0 -P -m64 -march=tremont -mtune=tremont >>>>>>>>>> -mfpmath=sse -msse4.2 -ggdb3 -g3 -O3 -std=c++11 -fPIC >>>>>>>>>> -ftls-model=initial-exec -flto -fno-fat-lto-objects -fno-strict-aliasing >>>>>>>>>> -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C++14 9.1.0 -P -m64 -march=tremont -mtune=tremont >>>>>>>>>> -mfpmath=sse -msse4.2 -ggdb3 -g3 -O3 -std=c++14 -fpermissive -fPIC >>>>>>>>>> -ftls-model=initial-exec -flto -fno-fat-lto-objects -fno-strict-aliasing >>>>>>>>>> -fasynchronous-unwind-tables -fmessage-length=0 >>>>>>>>>> GNU C++14 9.1.0 -m64 -march=tremont -mtune=tremont -mfpmath=sse >>>>>>>>>> -msse4.2 -ggdb3 -O3 -std=c++14 -fPIC -flto -fno-fat-lto-objects >>>>>>>>>> -ftls-model=initial-exec -fvisibility=hidden >>>>>>>>>> GNU C17 9.1.0 -m64 -march=tremont -mtune=tremont -mfpmath=sse >>>>>>>>>> -msse4.2 -ggdb3 -O3 -fPIC -flto -fno-fat-lto-objects >>>>>>>>>> -ftls-model=initial-exec -fvisibility=hidden >>>>>>>>>> GNU C11 6.4.1 20180518 -mtune=generic -march=x86-64 -g -O2 >>>>>>>>>> -std=gnu11 -fgnu89-inline -feliminate-unused-debug-types >>>>>>>>>> -fmerge-all-constants -fno-stack-protector -frounding-math -fno-math-errno >>>>>>>>>> -fPIC -ftls-model=initial-exec >>>>>>>>>> >>>>>>>>>> On Wed, Oct 14, 2020 at 2:53 PM Jiany Wu <wujianyue000@xxxxxxxxx> >>>>>>>>>> wrote: >>>>>>>>>> >>>>>>>>>>> Hi Dan >>>>>>>>>>> >>>>>>>>>>> Sorry, I put the command wrongly. >>>>>>>>>>> I abbreviated ths steps, actually I'm using libfoo.optdebug, >>>>>>>>>>> which is copied from original file, without flto option, same file, same >>>>>>>>>>> build, addr2line has file and line. >>>>>>>>>>> >>>>>>>>>>> objcopy --only-keep-debug libfoo.so libfoo.optdebug >>>>>>>>>>> >>>>>>>>>>> x86_64-pc-linux-gnu-addr2line -e libfoo.optdebug 0x6a1e20 -f >>>>>>>>>>> foo >>>>>>>>>>> ??:? >>>>>>>>>>> >>>>>>>>>>> ./Jianyue >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On Wed, Oct 14, 2020 at 2:16 PM Dan Kegel <dank@xxxxxxxxx> >>>>>>>>>>> wrote: >>>>>>>>>>> >>>>>>>>>>>> Did you want to run addr2line on libfoo.so instead of the >>>>>>>>>>>> default a.out? If so, you may need to add -e libfoo.so or the like. >>>>>>>>>>>> >>>>>>>>>>>> Jiany Wu via Gcc-help <gcc-help@xxxxxxxxxxx> schrieb am Di., >>>>>>>>>>>> 13. Okt. 2020, 22:53: >>>>>>>>>>>> >>>>>>>>>>>>> BTW, I used gcc-ar, and only -flto is used for lto >>>>>>>>>>>>> optimization, without >>>>>>>>>>>>> -fuse-linker-plugin, I had tried to add it, but seems the same. >>>>>>>>>>>>> >>>>>>>>>>>>> On Wed, Oct 14, 2020 at 1:47 PM Jiany Wu < >>>>>>>>>>>>> wujianyue000@xxxxxxxxx> wrote: >>>>>>>>>>>>> >>>>>>>>>>>>> > Hi, >>>>>>>>>>>>> > >>>>>>>>>>>>> > Could you help give a hand about this issue? Or any >>>>>>>>>>>>> suggestions? >>>>>>>>>>>>> > >>>>>>>>>>>>> > Can find function but can't find file and line. >>>>>>>>>>>>> > Thanks indeed in advance. >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > $ readelf -a libfoo.so | grep foo >>>>>>>>>>>>> > >>>>>>>>>>>>> > 9374: 0000000000783080 179 FUNC GLOBAL DEFAULT 12 >>>>>>>>>>>>> foo >>>>>>>>>>>>> > >>>>>>>>>>>>> > 30182: 0000000000783080 179 FUNC GLOBAL DEFAULT 12 >>>>>>>>>>>>> foo >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > $ addr2line 0x783080 -f >>>>>>>>>>>>> > >>>>>>>>>>>>> > foo >>>>>>>>>>>>> > >>>>>>>>>>>>> > ??:? >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > Gcc version: >>>>>>>>>>>>> > >>>>>>>>>>>>> > Target: x86_64-poky-linux >>>>>>>>>>>>> > >>>>>>>>>>>>> > Configured with: >>>>>>>>>>>>> > >>>>>>>>>>>>> ../../../../../../work-shared/gcc-9.1.0-r0/gcc-9.1.0/configure >>>>>>>>>>>>> > --build=x86_64-linux --host=x86_64-pokysdk-linux >>>>>>>>>>>>> --target=x86_64-poky-linux >>>>>>>>>>>>> > --prefix=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr >>>>>>>>>>>>> > >>>>>>>>>>>>> --exec_prefix=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr >>>>>>>>>>>>> > >>>>>>>>>>>>> --bindir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux >>>>>>>>>>>>> > >>>>>>>>>>>>> --sbindir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux >>>>>>>>>>>>> > >>>>>>>>>>>>> --libexecdir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/libexec/x86_64-poky-linux >>>>>>>>>>>>> > >>>>>>>>>>>>> --datadir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/share >>>>>>>>>>>>> > >>>>>>>>>>>>> --sysconfdir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/etc >>>>>>>>>>>>> > >>>>>>>>>>>>> --sharedstatedir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/com >>>>>>>>>>>>> > >>>>>>>>>>>>> --localstatedir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/var >>>>>>>>>>>>> > >>>>>>>>>>>>> --libdir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/lib/x86_64-poky-linux >>>>>>>>>>>>> > >>>>>>>>>>>>> --includedir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/include >>>>>>>>>>>>> > >>>>>>>>>>>>> --oldincludedir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/include >>>>>>>>>>>>> > >>>>>>>>>>>>> --infodir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/share/info >>>>>>>>>>>>> > >>>>>>>>>>>>> --mandir=/opt/poky/2.1.1/sysroots/x86_64-pokysdk-linux/usr/share/man >>>>>>>>>>>>> > --disable-silent-rules >>>>>>>>>>>>> > --disable-dependency-tracking--enable-clocale=generic >>>>>>>>>>>>> --with-gnu-ld >>>>>>>>>>>>> > --enable-shared --enable-languages=c,c++ >>>>>>>>>>>>> --enable-threads=posix >>>>>>>>>>>>> > --enable-multilib --enable-c99 --enable-long-long >>>>>>>>>>>>> --enable-symvers=gnu >>>>>>>>>>>>> > --program-prefix=x86_64-poky-linux- --without-local-prefix >>>>>>>>>>>>> --enable-lto >>>>>>>>>>>>> > --disable-libssp --enable-libitm --disable-bootstrap >>>>>>>>>>>>> --disable-libmudflap >>>>>>>>>>>>> > --with-system-zlib --with-linker-hash-style=gnu >>>>>>>>>>>>> --enable-linker-build-id >>>>>>>>>>>>> > --with-ppl=no --with-cloog=no --enable-checking=release >>>>>>>>>>>>> > --enable-cheaders=c_global --without-isl >>>>>>>>>>>>> > --with-gxx-include-dir=/not/exist/usr/include/c++/9.1.0 >>>>>>>>>>>>> > --with-sysroot=/not/exist --enable-poison-system-directories >>>>>>>>>>>>> > --disable-static --with-glibc-version=2.28 >>>>>>>>>>>>> --enable-__cxa_atexit >>>>>>>>>>>>> > --disable-plugin --enable-fix-cortex-a53-835769 >>>>>>>>>>>>> --enable-__cxa_atexit >>>>>>>>>>>>> > --enable-libmudflap --enable-libgomp --disable-libstdcxx-pch >>>>>>>>>>>>> > >>>>>>>>>>>>> > Thread model: posix >>>>>>>>>>>>> > >>>>>>>>>>>>> > gcc version 9.1.0 (GCC) >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > Addr2line version: >>>>>>>>>>>>> > >>>>>>>>>>>>> > GNU addr2line (GNU Binutils) 2.31.0.20180718 >>>>>>>>>>>>> > >>>>>>>>>>>>> > Copyright (C) 2018 Free Software Foundation, Inc. >>>>>>>>>>>>> > >>>>>>>>>>>>> > This program is free software; you may redistribute it under >>>>>>>>>>>>> the terms of >>>>>>>>>>>>> > >>>>>>>>>>>>> > the GNU General Public License version 3 or (at your option) >>>>>>>>>>>>> any later >>>>>>>>>>>>> > version. >>>>>>>>>>>>> > >>>>>>>>>>>>> > This program has absolutely no warranty. >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > ./Jianyue >>>>>>>>>>>>> > >>>>>>>>>>>>> >>>>>>>>>>>>>
