diff --git a/etc/visual-studio/UnitTests.vcxproj b/etc/visual-studio/UnitTests.vcxproj
index 614990728..87225c2df 100644
--- a/etc/visual-studio/UnitTests.vcxproj
+++ b/etc/visual-studio/UnitTests.vcxproj
@@ -72,6 +72,7 @@
     <ClCompile Include="..\..\tests\unit\test_ncp_buffer.cpp" />
     <ClCompile Include="..\..\tests\unit\test_platform.cpp" />
     <ClCompile Include="..\..\tests\unit\test_timer.cpp" />
+    <ClCompile Include="..\..\tests\unit\test_toolchain_c.c" />
     <ClCompile Include="..\..\tests\unit\test_toolchain.cpp" />
     <ClCompile Include="..\..\tests\unit\test_util.cpp" />
     <ClCompile Include="..\..\tests\unit\test_windows.cpp" />
diff --git a/examples/drivers/windows/otLwf/radio.c b/examples/drivers/windows/otLwf/radio.c
index 8fb575d44..70217f550 100644
--- a/examples/drivers/windows/otLwf/radio.c
+++ b/examples/drivers/windows/otLwf/radio.c
@@ -245,7 +245,7 @@ void otPlatRadioSetShortAddress(_In_ otInstance *otCtx, uint16_t address)
     }
 }
 
-void otPlatRadioSetPromiscuous(_In_ otInstance *otCtx, int aEnable)
+void otPlatRadioSetPromiscuous(_In_ otInstance *otCtx, bool aEnable)
 {
     NT_ASSERT(otCtx);
     PMS_FILTER pFilter = otCtxToFilter(otCtx);
@@ -444,7 +444,7 @@ otRadioCaps otPlatRadioGetCaps(_In_ otInstance *otCtx)
     return otCtxToFilter(otCtx)->otRadioCapabilities;
 }
 
-int otPlatRadioGetPromiscuous(_In_ otInstance *otCtx)
+bool otPlatRadioGetPromiscuous(_In_ otInstance *otCtx)
 {
     NT_ASSERT(otCtx);
     PMS_FILTER pFilter = otCtxToFilter(otCtx);
diff --git a/include/openthread-types.h b/include/openthread-types.h
index 762e425d1..70d021042 100644
--- a/include/openthread-types.h
+++ b/include/openthread-types.h
@@ -48,6 +48,7 @@ extern "C" {
 #endif
 
 #ifdef _WIN32
+#pragma warning(disable:4214)  // nonstandard extension used: bit field types other than int
 #ifdef _KERNEL_MODE
 #include <ntdef.h>
 #else
diff --git a/src/missing/stdbool/stdbool.h b/src/missing/stdbool/stdbool.h
index 7e6050fa7..e28121c5f 100644
--- a/src/missing/stdbool/stdbool.h
+++ b/src/missing/stdbool/stdbool.h
@@ -31,7 +31,7 @@
 
 #ifndef __cplusplus
 
-typedef int bool;
+typedef _Bool bool;
 #define false 0
 #define true 1
 
diff --git a/tests/unit/Makefile.am b/tests/unit/Makefile.am
index 7355638e1..0d5cf7d6b 100644
--- a/tests/unit/Makefile.am
+++ b/tests/unit/Makefile.am
@@ -145,7 +145,7 @@ test_timer_LDADD             = $(COMMON_LDADD)
 test_timer_SOURCES           = test_platform.cpp test_timer.cpp
 
 test_toolchain_LDADD         = $(COMMON_LDADD)
-test_toolchain_SOURCES       = test_platform.cpp test_toolchain.cpp
+test_toolchain_SOURCES       = test_platform.cpp test_toolchain.cpp test_toolchain_c.c
 
 if OPENTHREAD_ENABLE_DIAG
 test_diag_LDADD              = $(top_builddir)/src/diag/libopenthread-diag.a                  \
diff --git a/tests/unit/test_toolchain.cpp b/tests/unit/test_toolchain.cpp
index 9e0e976b2..82ec5e476 100644
--- a/tests/unit/test_toolchain.cpp
+++ b/tests/unit/test_toolchain.cpp
@@ -32,6 +32,12 @@
 #include <thread/topology.hpp>
 #include "test_util.h"
 
+extern "C" {
+    uint32_t otNetifAddress_Size_c();
+    uint32_t otNetifAddress_offset_mNext_c();
+    otNetifAddress CreateNetif_c();
+}
+
 void test_packed1()
 {
     OT_TOOL_PACKED_BEGIN
@@ -93,12 +99,26 @@ void test_packed_enum()
     VerifyOrQuit(neighbor.mState == Thread::Neighbor::kStateValid, "Toolchain::OT_TOOL_PACKED failed 4\n");
 }
 
+void test_addr_sizes()
+{
+    VerifyOrQuit(offsetof(otNetifAddress, mNext) == otNetifAddress_offset_mNext_c(),
+                 "mNext should offset the same in C & C++");
+    VerifyOrQuit(sizeof(otNetifAddress) == otNetifAddress_Size_c(), "otNetifAddress should the same in C & C++");
+}
+
+void test_addr_bitfield()
+{
+    VerifyOrQuit(CreateNetif_c().mScopeOverrideValid == true, "Toolchain::test_addr_size_cpp\n");
+}
+
 void TestToolchain(void)
 {
     test_packed1();
     test_packed2();
     test_packed_union();
     test_packed_enum();
+    test_addr_sizes();
+    test_addr_bitfield();
 }
 
 #ifdef ENABLE_TEST_MAIN
diff --git a/tests/unit/test_toolchain_c.c b/tests/unit/test_toolchain_c.c
new file mode 100644
index 000000000..43898ffc9
--- /dev/null
+++ b/tests/unit/test_toolchain_c.c
@@ -0,0 +1,52 @@
+/*
+ *  Copyright (c) 2016, The OpenThread Authors.
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *  3. Neither the name of the copyright holder nor the
+ *     names of its contributors may be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <platform/toolchain.h>
+#include "test_util.h"
+
+uint32_t otNetifAddress_Size_c()
+{
+    return sizeof(otNetifAddress);
+}
+
+uint32_t otNetifAddress_offset_mNext_c()
+{
+    return offsetof(otNetifAddress, mNext);
+}
+
+otNetifAddress CreateNetif_c()
+{
+    otNetifAddress addr;
+    memset(&addr, 0, sizeof(addr));
+    addr.mScopeOverrideValid = true;
+    return addr;
+}
diff --git a/tests/unit/test_windows.cpp b/tests/unit/test_windows.cpp
index 0c8a85571..7e42027a1 100644
--- a/tests/unit/test_windows.cpp
+++ b/tests/unit/test_windows.cpp
@@ -80,6 +80,8 @@ void test_packed1();
 void test_packed2();
 void test_packed_union();
 void test_packed_enum();
+void test_addr_sizes();
+void test_addr_bitfield();
 
 // test_fuzz.cpp
 void TestFuzz(uint32_t aSeconds);
@@ -155,6 +157,8 @@ namespace Thread
         TEST_METHOD(test_packed2) { ::test_packed2(); }
         TEST_METHOD(test_packed_union) { ::test_packed_union(); }
         TEST_METHOD(test_packed_enum) { ::test_packed_enum(); }
+        TEST_METHOD(test_addr_sizes) { ::test_addr_sizes(); }
+        TEST_METHOD(test_addr_bitfield) { ::test_addr_bitfield(); }
 
         // test_settings.cpp
         TEST_METHOD(RunTestFuzz) { ::TestFuzz(30); }