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
>>>>>>>>> >
>>>>>>>>>
>>>>>>>>>
<<attachment: flto_addr2line_issue.zip>>
