diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d8894b40..c4d890544 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,6 +8,11 @@ else()
     ENDIF ()
 endif()
 
+IF ((CMAKE_VERSION VERSION_GREATER 3.27) OR
+    (CMAKE_VERSION VERSION_EQUAL 3.27))
+    CMAKE_POLICY(SET CMP0145 OLD)
+ENDIF ()
+
 OPTION (MSGPACK_BUILD_TESTS "Build msgpack tests." OFF)
 OPTION (MSGPACK_GEN_COVERAGE "Enable running gcov to get a test coverage report." OFF)
 
diff --git a/include/msgpack/object.h b/include/msgpack/object.h
index f7d641157..b92b985fb 100644
--- a/include/msgpack/object.h
+++ b/include/msgpack/object.h
@@ -98,7 +98,37 @@ typedef struct msgpack_object_kv {
 } msgpack_object_kv;
 
 MSGPACK_DLLEXPORT
-bool msgpack_object_init(msgpack_object* d, int type, void* data, size_t size);
+void msgpack_object_init_nil(msgpack_object* d);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_boolean(msgpack_object* d, bool v);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_unsigned_integer(msgpack_object* d, uint64_t v);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_signed_integer(msgpack_object* d, int64_t v);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_float32(msgpack_object* d, float v);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_float64(msgpack_object* d, double v);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_str(msgpack_object* d, const char* data, uint32_t size);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_bin(msgpack_object* d, const char* data, uint32_t size);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_ext(msgpack_object* d, int8_t type, const char* data, uint32_t size);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_array(msgpack_object* d, msgpack_object* data, uint32_t size);
+
+MSGPACK_DLLEXPORT
+void msgpack_object_init_map(msgpack_object* d, msgpack_object_kv* data, uint32_t size);
 
 #if !defined(_KERNEL_MODE)
 MSGPACK_DLLEXPORT
diff --git a/src/objectc.c b/src/objectc.c
index 200811770..c33ab2b9b 100644
--- a/src/objectc.c
+++ b/src/objectc.c
@@ -125,41 +125,70 @@ int msgpack_pack_object(msgpack_packer* pk, msgpack_object d)
     }
 }
 
-bool msgpack_object_init(msgpack_object* d, int type, void* data, size_t size)
-{
-    switch (type) {
-    case MSGPACK_OBJECT_STR:
-        {
-            d->via.str.ptr = (char *)data;
-            d->via.str.size = size;
-            break;
-        }
-    case MSGPACK_OBJECT_BIN:
-        {
-            d->via.bin.ptr = (char *)data;
-            d->via.bin.size = size;
-            break;
-        }
-    case MSGPACK_OBJECT_ARRAY:
-        {
-            d->via.array.ptr = (msgpack_object *)data;
-            d->via.array.size = size;
-            break;
-        }
-    case MSGPACK_OBJECT_MAP:
-        {
-            d->via.map.ptr = (msgpack_object_kv *)data;
-            d->via.map.size = size;
-            break;
-        }
-    default:
-        {
-            // Other types are not supported and need to be initialized manually.
-            return false;
-        }
+void msgpack_object_init_nil(msgpack_object* d) {
+    d->type = MSGPACK_OBJECT_NIL;
+}
+
+void msgpack_object_init_boolean(msgpack_object* d, bool v) {
+    d->type = MSGPACK_OBJECT_BOOLEAN;
+    d->via.boolean = v;
+}
+
+void msgpack_object_init_unsigned_integer(msgpack_object* d, uint64_t v) {
+    d->type = MSGPACK_OBJECT_POSITIVE_INTEGER;
+    d->via.u64 = v;
+}
+
+void msgpack_object_init_signed_integer(msgpack_object* d, int64_t v) {
+    if (v < 0) {
+        d->type = MSGPACK_OBJECT_NEGATIVE_INTEGER;
+        d->via.i64 = v;
+    }
+    else {
+        d->type = MSGPACK_OBJECT_POSITIVE_INTEGER;
+        d->via.u64 = v;
     }
-    d->type = type;
-    return true;
+}
+
+void msgpack_object_init_float32(msgpack_object* d, float v) {
+    d->type = MSGPACK_OBJECT_FLOAT32;
+    d->via.f64 = v;
+}
+
+void msgpack_object_init_float64(msgpack_object* d, double v) {
+    d->type = MSGPACK_OBJECT_FLOAT64;
+    d->via.f64 = v;
+}
+
+void msgpack_object_init_str(msgpack_object* d, const char* data, uint32_t size) {
+    d->type = MSGPACK_OBJECT_STR;
+    d->via.str.ptr = data;
+    d->via.str.size = size;
+}
+
+void msgpack_object_init_bin(msgpack_object* d, const char* data, uint32_t size) {
+    d->type = MSGPACK_OBJECT_BIN;
+    d->via.bin.ptr = data;
+    d->via.bin.size = size;
+}
+
+void msgpack_object_init_ext(msgpack_object* d, int8_t type, const char* data, uint32_t size) {
+    d->type = MSGPACK_OBJECT_EXT;
+    d->via.ext.type = type;
+    d->via.ext.ptr = data;
+    d->via.ext.size = size;
+}
+
+void msgpack_object_init_array(msgpack_object* d, msgpack_object* data, uint32_t size) {
+    d->type = MSGPACK_OBJECT_ARRAY;
+    d->via.array.ptr = data;
+    d->via.array.size = size;
+}
+
+void msgpack_object_init_map(msgpack_object* d, msgpack_object_kv* data, uint32_t size) {
+    d->type = MSGPACK_OBJECT_MAP;
+    d->via.map.ptr = data;
+    d->via.map.size = size;
 }
 
 #if !defined(_KERNEL_MODE)
diff --git a/test/msgpack_c.cpp b/test/msgpack_c.cpp
index 4949a8e78..2a93d4376 100644
--- a/test/msgpack_c.cpp
+++ b/test/msgpack_c.cpp
@@ -1612,10 +1612,61 @@ TEST(MSGPACKC, object_bin_print_buffer_overflow) {
   EXPECT_STREQ("\"test\"", buffer);
 }
 
+TEST(MSGPACKC, init_msgpack_obj_nil) {
+    msgpack_object obj;
+    msgpack_object_init_nil(&obj);
+    EXPECT_EQ(MSGPACK_OBJECT_NIL, obj.type);
+}
+
+TEST(MSGPACKC, init_msgpack_obj_boolean) {
+    msgpack_object obj;
+    msgpack_object_init_boolean(&obj, true);
+    EXPECT_EQ(MSGPACK_OBJECT_BOOLEAN, obj.type);
+    EXPECT_EQ(true, obj.via.boolean);
+}
+
+TEST(MSGPACKC, init_msgpack_obj_unsigned_integer) {
+    msgpack_object obj;
+    msgpack_object_init_unsigned_integer(&obj, 123);
+    EXPECT_EQ(MSGPACK_OBJECT_POSITIVE_INTEGER, obj.type);
+    EXPECT_EQ(static_cast<uint64_t>(123), obj.via.u64);
+}
+
+TEST(MSGPACKC, init_msgpack_obj_signed_integer1) {
+    msgpack_object obj;
+    msgpack_object_init_signed_integer(&obj, -123);
+    EXPECT_EQ(MSGPACK_OBJECT_NEGATIVE_INTEGER, obj.type);
+    EXPECT_EQ(-123, obj.via.u64);
+}
+
+TEST(MSGPACKC, init_msgpack_obj_signed_integer2) {
+    msgpack_object obj;
+    msgpack_object_init_signed_integer(&obj, 123);
+    EXPECT_EQ(MSGPACK_OBJECT_POSITIVE_INTEGER, obj.type);
+    EXPECT_EQ(123, obj.via.u64);
+}
+
+TEST(MSGPACKC, init_msgpack_obj_float32) {
+    msgpack_object obj;
+    float val = 1.23f;
+    msgpack_object_init_float32(&obj, val);
+    EXPECT_EQ(MSGPACK_OBJECT_FLOAT32, obj.type);
+    EXPECT_TRUE(fabs(obj.via.f64 - val) <= kEPS);
+}
+
+TEST(MSGPACKC, init_msgpack_obj_float64) {
+    msgpack_object obj;
+    double val = 1.23;
+    msgpack_object_init_float64(&obj, val);
+    EXPECT_EQ(MSGPACK_OBJECT_FLOAT64, obj.type);
+    EXPECT_TRUE(fabs(obj.via.f64 - val) <= kEPS);
+}
+
+
 TEST(MSGPACKC, init_msgpack_obj_string) {
     msgpack_object obj;
     char buffer[] = "test";
-    msgpack_object_init(&obj, MSGPACK_OBJECT_STR, (void *)buffer, strlen(buffer));
+    msgpack_object_init_str(&obj, buffer, (uint32_t)strlen(buffer));
     EXPECT_EQ(MSGPACK_OBJECT_STR, obj.type);
     EXPECT_STREQ(buffer, obj.via.str.ptr);
 }
@@ -1623,20 +1674,29 @@ TEST(MSGPACKC, init_msgpack_obj_string) {
 TEST(MSGPACKC, init_msgpack_obj_bin) {
     msgpack_object obj;
     char buffer[] = "test";
-    msgpack_object_init(&obj, MSGPACK_OBJECT_BIN, (void *)buffer, strlen(buffer));
+    msgpack_object_init_bin(&obj, buffer, (uint32_t)strlen(buffer));
     EXPECT_EQ(MSGPACK_OBJECT_BIN, obj.type);
     EXPECT_STREQ(buffer, obj.via.bin.ptr);
 }
 
+TEST(MSGPACKC, init_msgpack_obj_ext) {
+    msgpack_object obj;
+    char buffer[] = "test";
+    msgpack_object_init_ext(&obj, 1, buffer, (uint32_t)strlen(buffer));
+    EXPECT_EQ(MSGPACK_OBJECT_EXT, obj.type);
+    EXPECT_EQ(1, obj.via.ext.type);
+    EXPECT_STREQ(buffer, obj.via.ext.ptr);
+}
+
 TEST(MSGPACKC, init_msgpack_obj_array) {
     msgpack_object obj;
     char buffer[][7] = {"test_1", "test_2", "test_3", "test_4"};
-    size_t buffer_size = 4;
+    uint32_t buffer_size = 4;
     msgpack_object array[buffer_size];
     for(size_t i = 0; i < buffer_size; i++) {
-        msgpack_object_init(&array[i], MSGPACK_OBJECT_STR, (void *)buffer[i], strlen(buffer[i]));
+        msgpack_object_init_str(&array[i], buffer[i], (uint32_t)strlen(buffer[i]));
     }
-    msgpack_object_init(&obj, MSGPACK_OBJECT_ARRAY, (void *)array, buffer_size);
+    msgpack_object_init_array(&obj, array, buffer_size);
     EXPECT_EQ(MSGPACK_OBJECT_ARRAY, obj.type);
     for(size_t i = 0; i < buffer_size; i++) {
         EXPECT_STREQ(buffer[i], obj.via.array.ptr[i].via.str.ptr);
@@ -1648,10 +1708,10 @@ TEST(MSGPACKC, init_msgpack_obj_map) {
     char key_str[] = "test_key";
     char value_str[] = "test_value";
     msgpack_object key,value;
-    msgpack_object_init(&key, MSGPACK_OBJECT_STR, (void *)key_str, strlen(key_str));
-    msgpack_object_init(&value, MSGPACK_OBJECT_STR, (void *)value_str, strlen(value_str));
+    msgpack_object_init_str(&key, key_str, (uint32_t)strlen(key_str));
+    msgpack_object_init_str(&value, value_str, (uint32_t)strlen(value_str));
     msgpack_object_kv map = { key, value };
-    msgpack_object_init(&obj, MSGPACK_OBJECT_MAP, (void *)&map, 1);
+    msgpack_object_init_map(&obj, &map, 1);
     EXPECT_EQ(MSGPACK_OBJECT_MAP, obj.type);
     EXPECT_STREQ(key_str, obj.via.map.ptr->key.via.str.ptr);
     EXPECT_STREQ(value_str, obj.via.map.ptr->val.via.str.ptr);