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 >>>>>>>>>>> > >>>>>>>>>>> >>>>>>>>>>>
