[Bug lto/69607] undefined reference to MAIN__._omp_fn.0 in atomic_capture-1.f with -flto

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69607

--- Comment #19 from vries at gcc dot gnu.org ---
> target-1.c
> target-2.c

Managed to reproduce with intelmic offloading:
...
$ ./lean-c-intelmic/install/host/bin/x86_64-pc-linux-gnu-gcc target-1.c
target-2.c -fopenmp -flto -flto-partition=1to1 -fno-toplevel-reorder -O2
-save-temps 
/tmp/ccfMdK4z.ltrans0.ltrans.o:(.gnu.offload_vars+0x0): undefined reference to
`tgtv'
/tmp/ccfMdK4z.ltrans0.ltrans.o:(.gnu.offload_funcs+0x0): undefined reference to
`fn2._omp_fn.0'
/tmp/ccfMdK4z.ltrans0.ltrans.o:(.gnu.offload_funcs+0x8): undefined reference to
`fn3._omp_fn.2'
/tmp/ccfMdK4z.ltrans0.ltrans.o:(.gnu.offload_funcs+0x10): undefined reference
to `fn4._omp_fn.4'
collect2: error: ld returned 1 exit status
...