mold/test/ifunc-static.sh

#!/bin/bash
set -e
cd $(dirname $0)
mold=`pwd`/../mold
echo -n "Testing $(basename -s .sh $0) ... "
t=$(pwd)/tmp/$(basename -s .sh $0)
mkdir -p $t

# Skip if libc is musl because musl does not support GNU FUNC
echo 'int main() {}' | cc -o $t/exe -xc -
ldd $t/exe | grep -q ld-musl && { echo OK; exit; }

cat <<EOF | clang -o $t/a.o -c -xc -
#include <stdio.h>

void foo() __attribute__((ifunc("resolve_foo")));

void hello() {
  printf("Hello world\n");
}

void *resolve_foo() {
  return hello;
}

int main() {
  foo();
  return 0;
}
EOF

clang -fuse-ld=$mold -o $t/exe $t/a.o -static
$t/exe | grep -q 'Hello world'

echo OK