https://sourceware.org/bugzilla/show_bug.cgi?id=25309
Bug ID: 25309
Summary: Certain source lines when debugging with GDB are not
found for an executable using gold linker, but are
found if regular ld is used instead
Product: binutils
Version: 2.30
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gold
Assignee: ccoutant at gmail dot com
Reporter: ciro.santilli at gmail dot com
CC: ian at airs dot com
Target Milestone: ---
I don't have a fully minimized example, but here is a fully reproducible setup
within a more or less complex build of a big project:
https://github.com/cirosantilli/linux-kernel-module-cheat/issues/109 running in
Ubuntu 18.04.
The project uses partial linking.
The compilation, partial link, and final link commands for one particular file
for which the source lines could not be found was as follows. Do you see
anything suspicious?
compile.tmp.sh
```
g++ \
-o out/gem5/upstream-master/build/ARM/cpu/o3/cpu.do \
-c \
-std=c++11 \
-pipe \
-fno-strict-aliasing \
-Wall \
-Wundef \
-Wextra \
-Wno-sign-compare \
-Wno-unused-parameter \
-Werror \
-Wno-error=deprecated-declarations \
-Wno-error=deprecated \
-pthread \
-fno-builtin-malloc \
-fno-builtin-calloc \
-fno-builtin-realloc \
-fno-builtin-free \
-DPROTOBUF_INLINE_NOT_IN_HEADERS=0 \
-ggdb3 \
-O0 \
-DNUMBER_BITS_PER_SET=64 \
-DDEBUG \
-DTRACING_ON=1 \
-Iext/pybind11/include \
-Iout/gem5/upstream-master/build/drampower/src \
-Iout/gem5/upstream-master/build/nomali/include \
-Iout/gem5/upstream-master/build/iostream3 \
-Iout/gem5/upstream-master/build/libfdt \
-Iout/gem5/upstream-master/build/libelf \
-Iout/gem5/upstream-master/build/fputils/include \
-Iinclude \
-Iext \
-I/usr/include/python2.7 \
-I/usr/include/x86_64-linux-gnu/python2.7 \
-I/usr/include/hdf5/serial \
-Iext/googletest/googletest/include \
-Iext/googletest/googlemock/include \
-Iout/gem5/upstream-master/build/ARM \
-Iout/gem5/upstream-master/build/ARM/systemc/ext \
out/gem5/upstream-master/build/ARM/cpu/o3/cpu.cc
```
intermediate-link.tmp.sh
```
g++ \
-o out/gem5/upstream-master/build/ARM/cpu/o3/lib.do.partial \
-fuse-ld=gold \
-r \
-nostdlib \
-flinker-output=rel \
out/gem5/upstream-master/build/ARM/cpu/o3/base_dyn_inst.do \
out/gem5/upstream-master/build/ARM/cpu/o3/commit.do \
out/gem5/upstream-master/build/ARM/cpu/o3/cpu.do \
out/gem5/upstream-master/build/ARM/cpu/o3/deriv.do \
out/gem5/upstream-master/build/ARM/cpu/o3/decode.do \
out/gem5/upstream-master/build/ARM/cpu/o3/dyn_inst.do \
out/gem5/upstream-master/build/ARM/cpu/o3/fetch.do \
out/gem5/upstream-master/build/ARM/cpu/o3/free_list.do \
out/gem5/upstream-master/build/ARM/cpu/o3/fu_pool.do \
out/gem5/upstream-master/build/ARM/cpu/o3/iew.do \
out/gem5/upstream-master/build/ARM/cpu/o3/inst_queue.do \
out/gem5/upstream-master/build/ARM/cpu/o3/lsq.do \
out/gem5/upstream-master/build/ARM/cpu/o3/lsq_unit.do \
out/gem5/upstream-master/build/ARM/cpu/o3/mem_dep_unit.do \
out/gem5/upstream-master/build/ARM/cpu/o3/regfile.do \
out/gem5/upstream-master/build/ARM/cpu/o3/rename.do \
out/gem5/upstream-master/build/ARM/cpu/o3/rename_map.do \
out/gem5/upstream-master/build/ARM/cpu/o3/rob.do \
out/gem5/upstream-master/build/ARM/cpu/o3/scoreboard.do \
out/gem5/upstream-master/build/ARM/cpu/o3/store_set.do \
out/gem5/upstream-master/build/ARM/cpu/o3/thread_context.do \
out/gem5/upstream-master/build/ARM/cpu/o3/checker.do \
-Lout/gem5/upstream-master/build/drampower \
-Lout/gem5/upstream-master/build/nomali \
-Lout/gem5/upstream-master/build/iostream3 \
-Lout/gem5/upstream-master/build/libfdt \
-Lout/gem5/upstream-master/build/libelf \
-Lout/gem5/upstream-master/build/fputils \
-L/usr/lib/x86_64-linux-gnu/hdf5/serial \
-Lout/gem5/upstream-master/build/googletest
```
link.tmp.sh
```
g++ \
-o out/gem5/upstream-master/build/ARM/gem5.debug \
-fuse-ld=gold \
-pthread \
-L/usr/lib/python2.7/config-x86_64-linux-gnu \
-L/usr/lib \
-Xlinker \
-export-dynamic \
-Wl,-O1 \
-Wl,-Bsymbolic-functions \
-z origin \
-O0 \
out/gem5/upstream-master/build/ARM/sim/main.do \
out/gem5/upstream-master/build/ARM/dev/pci/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/network/lib.do.partial \
out/gem5/upstream-master/build/ARM/dev/ps2/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/o3/probe/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/dt/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/protocol/lib.do.partial \
out/gem5/upstream-master/build/ARM/kern/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/minor/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/network/fault_model/lib.do.partial
\
out/gem5/upstream-master/build/ARM/sim/probe/lib.do.partial \
out/gem5/upstream-master/build/ARM/base/vnc/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/tlm_core/2/generic_payload/lib.do.partial
\
out/gem5/upstream-master/build/ARM/arch/arm/lib.do.partial \
out/gem5/upstream-master/build/ARM/dev/i2c/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/network/garnet2.0/lib.do.partial
\
out/gem5/upstream-master/build/ARM/mem/ruby/common/lib.do.partial \
out/gem5/upstream-master/build/ARM/sim/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/testers/directedtest/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/dt/misc/lib.do.partial \
out/gem5/upstream-master/build/ARM/learning_gem5/part2/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/o3/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/dt/fx/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/qos/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/slicc_interface/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/cache/compressors/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/system/lib.do.partial \
out/gem5/upstream-master/build/ARM/arch/generic/lib.do.partial \
out/gem5/upstream-master/build/ARM/python/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/cache/prefetch/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/cache/tags/indexing_policies/lib.do.partial
\
out/gem5/upstream-master/build/ARM/mem/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/profiler/lib.do.partial \
out/gem5/upstream-master/build/ARM/dev/virtio/lib.do.partial \
out/gem5/upstream-master/build/ARM/dev/net/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/protocol/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/tlm_core/2/quantum/lib.do.partial
\
out/gem5/upstream-master/build/ARM/cpu/testers/memtest/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/structures/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/core/lib.do.partial \
out/gem5/upstream-master/build/ARM/arch/arm/tracers/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/dt/int/lib.do.partial \
out/gem5/upstream-master/build/ARM/proto/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/dt/bit/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/tlm_bridge/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/testers/garnet_synthetic_traffic/lib.do.partial
\
out/gem5/upstream-master/build/ARM/cpu/testers/traffic_gen/lib.do.partial \
out/gem5/upstream-master/build/ARM/sim/power/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/utils/lib.do.partial \
out/gem5/upstream-master/build/ARM/base/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/cache/tags/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/channel/lib.do.partial \
out/gem5/upstream-master/build/ARM/dev/arm/lib.do.partial \
out/gem5/upstream-master/build/ARM/dev/storage/lib.do.partial \
out/gem5/upstream-master/build/ARM/dev/serial/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/pred/lib.do.partial \
out/gem5/upstream-master/build/ARM/unittest/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/probes/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/trace/lib.do.partial \
out/gem5/upstream-master/build/ARM/base/filters/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/testers/rubytest/lib.do.partial \
out/gem5/upstream-master/build/ARM/systemc/tlm_utils/lib.do.partial \
out/gem5/upstream-master/build/ARM/dev/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/cache/replacement_policies/lib.do.partial
\
out/gem5/upstream-master/build/ARM/cpu/simple/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/cache/lib.do.partial \
out/gem5/upstream-master/build/ARM/mem/ruby/network/simple/lib.do.partial \
out/gem5/upstream-master/build/ARM/cpu/simple/probes/lib.do.partial \
out/gem5/upstream-master/build/ARM/base/date.do \
-Lout/gem5/upstream-master/build/drampower \
-Lout/gem5/upstream-master/build/nomali \
-Lout/gem5/upstream-master/build/iostream3 \
-Lout/gem5/upstream-master/build/libfdt \
-Lout/gem5/upstream-master/build/libelf \
-Lout/gem5/upstream-master/build/fputils \
-L/usr/lib/x86_64-linux-gnu/hdf5/serial \
-Lout/gem5/upstream-master/build/googletest \
-lpython2.7 \
-lpthread \
-ldl \
-lutil \
-lm \
-lz \
-lprotobuf \
-lrt \
-ltcmalloc \
-lhdf5 \
-lhdf5_cpp \
-lfputils \
-lelf \
-lfdt \
-liostream3 \
-lnomali \
-ldrampower \
-lpng
```
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