llvm-readelf warning on eld generated shared library: `unable to get section index for symbol with st_shndx = 0xfff1 (SHN_ABS)`

llvm-readelf is reporting the below warning when reading symbols of an eld-generated shared library:

llvm-readelf: warning: unable to get section index for symbol with st_shndx = 0xfff1 (SHN_ABS)

Reproducer:

cat > 1.c << EOF
int foo()  { return 1; }

int bar() { return foo(); }
EOF

LDs=(ld.eld)
SFs=(eld)

# The issue is not directly reproducible using clang because clang does not emit 
# empty .bss and .data sections.
riscv64-unknown-linux-gnu-gcc -o 1.o 1.s -fPIC -c -ffunction-sections

for i in "${!SFs[@]}"; do
  ${LDs[$i]} -o lib1.${SFs[$i]}.so 1.o -shared 
done

The root cause of the issue is that we emit ghost section symbols to the output image, that is, section symbols for which there is no corresponding section.