The following code:

JNIEXPORT void JNICALL Java_org_openjdk_bench_java_lang_foreign_xor_GetArrayUnsafeXorOpImpl_xorOp
(JNIEnv *env, jobject obj, jlong src, jlong dst, jint len) {
     jbyte *sbuf = (jbyte*)(void*)src;
     jbyte *dbuf = (jbyte*)(void*)dst;
     xor_op(sbuf, dbuf, len);
}

from jdk/test/micro/org/openjdk/bench/java/lang/foreign/xor/libjnitest.c does not build on 32 bit platforms because of the pointer cast.

test/micro/org/openjdk/bench/java/lang/foreign/xor/libjnitest.c: In function 'Java_org_openjdk_bench_java_lang_foreign_xor_GetArrayUnsafeXorOpImpl_xorOp':
jdk/test/micro/org/openjdk/bench/java/lang/foreign/xor/libjnitest.c:72:27: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
   72 |     jbyte *sbuf = (jbyte*)(void*)src;
      |                           ^
jdk/test/micro/org/openjdk/bench/java/lang/foreign/xor/libjnitest.c:73:27: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
   73 |     jbyte *dbuf = (jbyte*)(void*)dst;