https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85870
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Ramana Radhakrishnan from comment #4)
> (In reply to Martin Liška from comment #3)
> > Can't reproduce with GCC 7.3.0 on x86_64:
> >
> > + gcc-7 -O2 -flto -c test_1.i -o test_1.o
> > + gcc-7 -O2 -flto -c test_2.i -o test_2.o
> > + gcc-7 test_1.o test_2.o
> > /usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ld:
> > /usr/lib64/gcc/x86_64-suse-linux/7/../../../../lib64/crt1.o: in function
> > `_start':
> > /home/abuild/rpmbuild/BUILD/glibc-2.27/csu/../sysdeps/x86_64/start.S:104:
> > undefined reference to `main'
> > collect2: error: ld returned 1 exit status
> >
> > Richi how did you achieve to reproduce that?
>
> It's still failing on aarch64-none-linux-gnu. So that doesn't mean this goes
> waiting.
Native or cross compiler? Because cross compiler works fine for me:
$ aarch64-suse-linux-g++-8 -c test_1.i -c -flto
$ aarch64-suse-linux-g++-8 -c test_2.i -c -flto
$ /usr/lib64/gcc/aarch64-suse-linux/8/lto1 test_1.o test_2.o
Reading object files: test_1.o test_2.o {GC start 1697k}
Reading the callgraph
Merging declarations
Reading summaries
Reading function bodies:
Performing interprocedural optimizations
<whole-program> <profile_estimate> <icf> <devirt> <cp> <cdtor> <fnsummary>
<inline> <pure-const> <free-fnsummary> <static-var> <single-use>
<comdats>Assembling functions:
<materialize-all-clones> init_xyz_0 init_xyz_1
Time variable usr sys wall
GGC
phase setup : 0.00 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
1847 kB ( 1%)
phase opt and generate : 2.11 (100%) 0.12 ( 92%) 2.23 (100%)
188629 kB ( 99%)
phase finalize : 0.00 ( 0%) 0.01 ( 8%) 0.01 ( 0%)
0 kB ( 0%)
lto stream inflate : 0.12 ( 6%) 0.03 ( 23%) 0.15 ( 7%)
0 kB ( 0%)
ipa lto constructors in : 0.65 ( 31%) 0.03 ( 23%) 0.69 ( 31%)
188513 kB ( 99%)
TOTAL : 2.11 0.13 2.24
190523 kB
