diff --git a/MSVC/.gitignore b/MSVC/.gitignore
new file mode 100644
index 0000000..81015b5
--- /dev/null
+++ b/MSVC/.gitignore
@@ -0,0 +1,4 @@
+Debug
+Release
+*.iobj
+*.ipdb
diff --git a/MSVC/greg-vs150.sln b/MSVC/greg-vs150.sln
new file mode 100644
index 0000000..a9e4f4d
--- /dev/null
+++ b/MSVC/greg-vs150.sln
@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25420.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "greg", "greg-vs150.vcxproj", "{DE253F1D-68B4-4A2B-A6FD-1A7176934DD1}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x86 = Debug|x86
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{DE253F1D-68B4-4A2B-A6FD-1A7176934DD1}.Debug|x86.ActiveCfg = Debug|Win32
+		{DE253F1D-68B4-4A2B-A6FD-1A7176934DD1}.Debug|x86.Build.0 = Debug|Win32
+		{DE253F1D-68B4-4A2B-A6FD-1A7176934DD1}.Release|x86.ActiveCfg = Release|Win32
+		{DE253F1D-68B4-4A2B-A6FD-1A7176934DD1}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
diff --git a/MSVC/greg-vs150.vcxproj b/MSVC/greg-vs150.vcxproj
new file mode 100644
index 0000000..1757f9b
--- /dev/null
+++ b/MSVC/greg-vs150.vcxproj
@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{DE253F1D-68B4-4A2B-A6FD-1A7176934DD1}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>gregvs120</RootNamespace>
+    <ProjectName>greg</ProjectName>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>$(SolutionDir)</OutDir>
+    <TargetName>$(ProjectName)d</TargetName>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>$(SolutionDir)</OutDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_CRT_SECURE_NO_WARNINGS;_DEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>.</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;_CRT_SECURE_NO_WARNINGS;NDEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>.</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\compile.c" />
+    <ClCompile Include="..\greg.c" />
+    <ClCompile Include="..\tree.c" />
+    <ClCompile Include="getopt.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\greg.g" />
+    <None Include="..\greg.use" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\greg.h" />
+    <ClInclude Include="getopt.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/greg.c b/greg.c
index 49b6f03..87e9782 100644
--- a/greg.c
+++ b/greg.c
@@ -327,7 +327,7 @@ YY_LOCAL(int) yyAccept(GREG *G, int tp0)
 }
 
 YY_LOCAL(void) yyPush(GREG *G, char *text, int count, yythunk *thunk, YY_XTYPE YY_XVAR)	{
-  size_t off = (G->val - G->vals) + count;
+  int off = (G->val - G->vals) + count;
   if (off > G->valslen) {
     while (G->valslen < off + 1)
       G->valslen *= 2;
diff --git a/greg.h b/greg.h
index 89afc43..12d4d1a 100644
--- a/greg.h
+++ b/greg.h
@@ -23,6 +23,7 @@
 #define strdup _strdup
 #define setmode _setmode
 #define fileno _fileno
+#pragma warning(disable: 4996) // The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name
 #endif
 
 #define GREG_MAJOR      0