diff --git a/tests/ifunc_test.cpp b/tests/ifunc_test.cpp
index 7ab5899..e69271f 100644
--- a/tests/ifunc_test.cpp
+++ b/tests/ifunc_test.cpp
@@ -16,12 +16,19 @@
 
 #include <gtest/gtest.h>
 
+#include <sys/auxv.h>
+#if defined(__BIONIC__)
+#include <sys/ifunc.h>
+#endif
+
+typedef int (*fn_ptr_t)();
+
 int ret42() {
   return 42;
 }
 
-extern "C" void* resolver() {
-  return (void*)ret42;
+extern "C" fn_ptr_t resolver() {
+  return ret42;
 }
 
 int ifunc() __attribute__((ifunc("resolver")));
@@ -29,3 +36,51 @@
 TEST(ifunc, function) {
   ASSERT_EQ(42, ifunc());
 }
+
+#if defined(__BIONIC__)
+
+#if defined(__aarch64__)
+
+static uint64_t g_hwcap;
+static __ifunc_arg_t g_arg;
+
+extern "C" fn_ptr_t hwcap_resolver(uint64_t hwcap, __ifunc_arg_t* arg) {
+  g_hwcap = hwcap;
+  g_arg = *arg;
+  return ret42;
+}
+
+#elif defined(__arm__)
+
+static unsigned long g_hwcap;
+
+extern "C" fn_ptr_t hwcap_resolver(unsigned long hwcap) {
+  g_hwcap = hwcap;
+  return ret42;
+}
+
+#else
+
+extern "C" fn_ptr_t hwcap_resolver() {
+  return ret42;
+}
+
+#endif
+
+int hwcap() __attribute__((ifunc("hwcap_resolver")));
+
+TEST(ifunc, hwcap) {
+  ASSERT_EQ(42, hwcap());
+
+#if defined(__aarch64__)
+  EXPECT_EQ(getauxval(AT_HWCAP) | _IFUNC_ARG_HWCAP, g_hwcap);
+
+  EXPECT_EQ(sizeof(__ifunc_arg_t), g_arg._size);
+  EXPECT_EQ(getauxval(AT_HWCAP), g_arg._hwcap);
+  EXPECT_EQ(getauxval(AT_HWCAP2), g_arg._hwcap2);
+#elif defined(__arm__)
+  EXPECT_EQ(getauxval(AT_HWCAP), g_hwcap);
+#endif
+}
+
+#endif  // defined(__BIONIC__)