diff --git a/ide/vs2017/mimalloc-override.vcxproj b/ide/vs2017/mimalloc-override.vcxproj
index 26c8080b..990d6ca9 100644
--- a/ide/vs2017/mimalloc-override.vcxproj
+++ b/ide/vs2017/mimalloc-override.vcxproj
@@ -95,7 +95,7 @@
       <SDLCheck>true</SDLCheck>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>MI_SHARED_LIB;MI_SHARED_LIB_EXPORT;MI_MALLOC_OVERRIDE;%(PreprocessorDefinitions);</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;MI_SHARED_LIB;MI_SHARED_LIB_EXPORT;MI_MALLOC_OVERRIDE;%(PreprocessorDefinitions);</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <SupportJustMyCode>false</SupportJustMyCode>
       <CompileAs>Default</CompileAs>
@@ -123,7 +123,7 @@
       <SDLCheck>true</SDLCheck>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>MI_SHARED_LIB;MI_SHARED_LIB_EXPORT;MI_MALLOC_OVERRIDE;%(PreprocessorDefinitions);</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;MI_SHARED_LIB;MI_SHARED_LIB_EXPORT;MI_MALLOC_OVERRIDE;%(PreprocessorDefinitions);</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
       <SupportJustMyCode>false</SupportJustMyCode>
       <CompileAs>Default</CompileAs>
@@ -152,7 +152,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>MI_SHARED_LIB;MI_SHARED_LIB_EXPORT;MI_MALLOC_OVERRIDE;%(PreprocessorDefinitions);NDEBUG</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;MI_SHARED_LIB;MI_SHARED_LIB_EXPORT;MI_MALLOC_OVERRIDE;%(PreprocessorDefinitions);NDEBUG</PreprocessorDefinitions>
       <AssemblerOutput>AssemblyAndSourceCode</AssemblerOutput>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
       <WholeProgramOptimization>false</WholeProgramOptimization>
@@ -184,7 +184,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>MI_SHARED_LIB;MI_SHARED_LIB_EXPORT;MI_MALLOC_OVERRIDE;%(PreprocessorDefinitions);NDEBUG</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;MI_SHARED_LIB;MI_SHARED_LIB_EXPORT;MI_MALLOC_OVERRIDE;%(PreprocessorDefinitions);NDEBUG</PreprocessorDefinitions>
       <AssemblerOutput>AssemblyAndSourceCode</AssemblerOutput>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
       <WholeProgramOptimization>false</WholeProgramOptimization>
diff --git a/ide/vs2017/mimalloc-test-stress.vcxproj b/ide/vs2017/mimalloc-test-stress.vcxproj
index 325ba3ff..b8267d0b 100644
--- a/ide/vs2017/mimalloc-test-stress.vcxproj
+++ b/ide/vs2017/mimalloc-test-stress.vcxproj
@@ -149,8 +149,8 @@
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="mimalloc-override.vcxproj">
-      <Project>{abb5eae7-b3e6-432e-b636-333449892ea7}</Project>
+    <ProjectReference Include="mimalloc.vcxproj">
+      <Project>{abb5eae7-b3e6-432e-b636-333449892ea6}</Project>
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
diff --git a/ide/vs2017/mimalloc.vcxproj b/ide/vs2017/mimalloc.vcxproj
index 9d6af0e5..770a87b2 100644
--- a/ide/vs2017/mimalloc.vcxproj
+++ b/ide/vs2017/mimalloc.vcxproj
@@ -90,6 +90,18 @@
     <TargetExt>.lib</TargetExt>
     <TargetName>mimalloc-static</TargetName>
   </PropertyGroup>
+  <PropertyGroup Label="LLVM" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <UseLlvmLib>false</UseLlvmLib>
+  </PropertyGroup>
+  <PropertyGroup Label="LLVM" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <UseLlvmLib>false</UseLlvmLib>
+  </PropertyGroup>
+  <PropertyGroup Label="LLVM" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <UseLlvmLib>false</UseLlvmLib>
+  </PropertyGroup>
+  <PropertyGroup Label="LLVM" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <UseLlvmLib>false</UseLlvmLib>
+  </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <WarningLevel>Level3</WarningLevel>
@@ -97,7 +109,7 @@
       <SDLCheck>true</SDLCheck>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>MI_DEBUG=3;%(PreprocessorDefinitions);</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;MI_DEBUG=3;%(PreprocessorDefinitions);</PreprocessorDefinitions>
       <CompileAs>CompileAsCpp</CompileAs>
       <SupportJustMyCode>false</SupportJustMyCode>
       <LanguageStandard>stdcpp17</LanguageStandard>
@@ -116,7 +128,7 @@
       <SDLCheck>true</SDLCheck>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>MI_DEBUG=3;%(PreprocessorDefinitions);</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;MI_DEBUG=3;%(PreprocessorDefinitions);</PreprocessorDefinitions>
       <CompileAs>CompileAsCpp</CompileAs>
       <SupportJustMyCode>false</SupportJustMyCode>
       <LanguageStandard>stdcpp17</LanguageStandard>
@@ -143,7 +155,7 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>%(PreprocessorDefinitions);NDEBUG</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions);NDEBUG</PreprocessorDefinitions>
       <AssemblerOutput>AssemblyAndSourceCode</AssemblerOutput>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
       <WholeProgramOptimization>false</WholeProgramOptimization>
@@ -170,7 +182,7 @@
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>../../include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>%(PreprocessorDefinitions);NDEBUG</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions);NDEBUG</PreprocessorDefinitions>
       <AssemblerOutput>AssemblyAndSourceCode</AssemblerOutput>
       <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
       <WholeProgramOptimization>false</WholeProgramOptimization>
diff --git a/src/alloc-posix.c b/src/alloc-posix.c
index ade8cc48..ffc75373 100644
--- a/src/alloc-posix.c
+++ b/src/alloc-posix.c
@@ -9,7 +9,6 @@ terms of the MIT license. A copy of the license can be found in the file
 // mi prefixed publi definitions of various Posix, Unix, and C++ functions
 // for convenience and used when overriding these functions.
 // ------------------------------------------------------------------------
-
 #include "mimalloc.h"
 #include "mimalloc-internal.h"
 
diff --git a/src/os.c b/src/os.c
index 970eeb94..0aa85bd6 100644
--- a/src/os.c
+++ b/src/os.c
@@ -192,7 +192,7 @@ static bool mi_os_mem_free(void* addr, size_t size, bool was_committed, mi_stats
   if (was_committed) _mi_stat_decrease(&stats->committed, size);
   _mi_stat_decrease(&stats->reserved, size);
   if (err) {
-#pragma warning(suppress:4996)
+    #pragma warning(suppress:4996)
     _mi_warning_message("munmap failed: %s, addr 0x%8li, size %lu\n", strerror(errno), (size_t)addr, size);
     return false;
   }
@@ -215,9 +215,9 @@ static void* mi_win_virtual_allocx(void* addr, size_t size, size_t try_alignment
 #if defined(MEM_EXTENDED_PARAMETER_TYPE_BITS)
   // on modern Windows try use VirtualAlloc2 for aligned allocation
   if (try_alignment > 0 && (try_alignment % _mi_os_page_size()) == 0 && pVirtualAlloc2 != NULL) {
-    MEM_ADDRESS_REQUIREMENTS reqs = { 0 };
+    MEM_ADDRESS_REQUIREMENTS reqs = { 0, 0, 0 };
     reqs.Alignment = try_alignment;
-    MEM_EXTENDED_PARAMETER param = { 0 };
+    MEM_EXTENDED_PARAMETER param = { {0, 0}, {0} };
     param.Type = MemExtendedParameterAddressRequirements;
     param.Pointer = &reqs;
     return (*pVirtualAlloc2)(GetCurrentProcess(), addr, size, flags, PAGE_READWRITE, &param, 1);
@@ -285,6 +285,7 @@ static void* mi_unix_mmapx(void* addr, size_t size, size_t try_alignment, int pr
   }
   #else
   UNUSED(try_alignment);
+  UNUSED(mi_os_get_aligned_hint);
   #endif
   if (p==NULL) {
     p = mmap(addr,size,protect_flags,flags,fd,0);
@@ -827,7 +828,7 @@ static void* mi_os_alloc_huge_os_pagesx(void* addr, size_t size, int numa_node)
   mi_win_enable_large_os_pages();
 
   #if defined(MEM_EXTENDED_PARAMETER_TYPE_BITS)
-  MEM_EXTENDED_PARAMETER params[3] = { {0,0},{0,0},{0,0} };
+  MEM_EXTENDED_PARAMETER params[3] = { {{0,0},{0}},{{0,0},{0}},{{0,0},{0}} };
   // on modern Windows try use NtAllocateVirtualMemoryEx for 1GiB huge pages
   static bool mi_huge_pages_available = true;
   if (pNtAllocateVirtualMemoryEx != NULL && mi_huge_pages_available) {