- Issue #10181: New memoryview implementation fixes multiple ownership

  and lifetime issues of dynamically allocated Py_buffer members (#9990)
  as well as crashes (#8305, #7433). Many new features have been added
  (See whatsnew/3.3), and the documentation has been updated extensively.
  The ndarray test object from _testbuffer.c implements all aspects of
  PEP-3118, so further development towards the complete implementation
  of the PEP can proceed in a test-driven manner.

  Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review
  and many ideas.

- Issue #12834: Fix incorrect results of memoryview.tobytes() for
  non-contiguous arrays.

- Issue #5231: Introduce memoryview.cast() method that allows changing
  format and shape without making a copy of the underlying memory.

3 files changed, 545 insertions, 0 deletions

diff --git a/PCbuild/_testbuffer.vcproj b/PCbuild/_testbuffer.vcproj
new file mode 100644
index 0000000..795ea27
--- /dev/null
+++ b/PCbuild/_testbuffer.vcproj
@@ -0,0 +1,521 @@
+<?xml version="1.0" encoding="Windows-1252"?>

+<VisualStudioProject

+	ProjectType="Visual C++"

+	Version="9.00"

+	Name="_testbuffer"

+	ProjectGUID="{A2697BD3-28C1-4AEC-9106-8B748639FD16}"

+	RootNamespace="_testbuffer"

+	Keyword="Win32Proj"

+	TargetFrameworkVersion="196613"

+	>

+	<Platforms>

+		<Platform

+			Name="Win32"

+		/>

+		<Platform

+			Name="x64"

+		/>

+	</Platforms>

+	<ToolFiles>

+	</ToolFiles>

+	<Configurations>

+		<Configuration

+			Name="Debug|Win32"

+			ConfigurationType="2"

+			InheritedPropertySheets=".\pyd_d.vsprops"

+			CharacterSet="0"

+			>

+			<Tool

+				Name="VCPreBuildEventTool"

+			/>

+			<Tool

+				Name="VCCustomBuildTool"

+			/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"

+			/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"

+			/>

+			<Tool

+				Name="VCMIDLTool"

+			/>

+			<Tool

+				Name="VCCLCompilerTool"

+			/>

+			<Tool

+				Name="VCManagedResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCPreLinkEventTool"

+			/>

+			<Tool

+				Name="VCLinkerTool"

+				BaseAddress="0x1e1F0000"

+			/>

+			<Tool

+				Name="VCALinkTool"

+			/>

+			<Tool

+				Name="VCManifestTool"

+			/>

+			<Tool

+				Name="VCXDCMakeTool"

+			/>

+			<Tool

+				Name="VCBscMakeTool"

+			/>

+			<Tool

+				Name="VCFxCopTool"

+			/>

+			<Tool

+				Name="VCAppVerifierTool"

+			/>

+			<Tool

+				Name="VCPostBuildEventTool"

+			/>

+		</Configuration>

+		<Configuration

+			Name="Debug|x64"

+			ConfigurationType="2"

+			InheritedPropertySheets=".\pyd_d.vsprops;.\x64.vsprops"

+			CharacterSet="0"

+			>

+			<Tool

+				Name="VCPreBuildEventTool"

+			/>

+			<Tool

+				Name="VCCustomBuildTool"

+			/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"

+			/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"

+			/>

+			<Tool

+				Name="VCMIDLTool"

+				TargetEnvironment="3"

+			/>

+			<Tool

+				Name="VCCLCompilerTool"

+			/>

+			<Tool

+				Name="VCManagedResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCPreLinkEventTool"

+			/>

+			<Tool

+				Name="VCLinkerTool"

+				BaseAddress="0x1e1F0000"

+			/>

+			<Tool

+				Name="VCALinkTool"

+			/>

+			<Tool

+				Name="VCManifestTool"

+			/>

+			<Tool

+				Name="VCXDCMakeTool"

+			/>

+			<Tool

+				Name="VCBscMakeTool"

+			/>

+			<Tool

+				Name="VCFxCopTool"

+			/>

+			<Tool

+				Name="VCAppVerifierTool"

+			/>

+			<Tool

+				Name="VCPostBuildEventTool"

+			/>

+		</Configuration>

+		<Configuration

+			Name="Release|Win32"

+			ConfigurationType="2"

+			InheritedPropertySheets=".\pyd.vsprops"

+			CharacterSet="0"

+			WholeProgramOptimization="1"

+			>

+			<Tool

+				Name="VCPreBuildEventTool"

+			/>

+			<Tool

+				Name="VCCustomBuildTool"

+			/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"

+			/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"

+			/>

+			<Tool

+				Name="VCMIDLTool"

+			/>

+			<Tool

+				Name="VCCLCompilerTool"

+			/>

+			<Tool

+				Name="VCManagedResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCPreLinkEventTool"

+			/>

+			<Tool

+				Name="VCLinkerTool"

+				BaseAddress="0x1e1F0000"

+			/>

+			<Tool

+				Name="VCALinkTool"

+			/>

+			<Tool

+				Name="VCManifestTool"

+			/>

+			<Tool

+				Name="VCXDCMakeTool"

+			/>

+			<Tool

+				Name="VCBscMakeTool"

+			/>

+			<Tool

+				Name="VCFxCopTool"

+			/>

+			<Tool

+				Name="VCAppVerifierTool"

+			/>

+			<Tool

+				Name="VCPostBuildEventTool"

+			/>

+		</Configuration>

+		<Configuration

+			Name="Release|x64"

+			ConfigurationType="2"

+			InheritedPropertySheets=".\pyd.vsprops;.\x64.vsprops"

+			CharacterSet="0"

+			WholeProgramOptimization="1"

+			>

+			<Tool

+				Name="VCPreBuildEventTool"

+			/>

+			<Tool

+				Name="VCCustomBuildTool"

+			/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"

+			/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"

+			/>

+			<Tool

+				Name="VCMIDLTool"

+				TargetEnvironment="3"

+			/>

+			<Tool

+				Name="VCCLCompilerTool"

+			/>

+			<Tool

+				Name="VCManagedResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCPreLinkEventTool"

+			/>

+			<Tool

+				Name="VCLinkerTool"

+				BaseAddress="0x1e1F0000"

+			/>

+			<Tool

+				Name="VCALinkTool"

+			/>

+			<Tool

+				Name="VCManifestTool"

+			/>

+			<Tool

+				Name="VCXDCMakeTool"

+			/>

+			<Tool

+				Name="VCBscMakeTool"

+			/>

+			<Tool

+				Name="VCFxCopTool"

+			/>

+			<Tool

+				Name="VCAppVerifierTool"

+			/>

+			<Tool

+				Name="VCPostBuildEventTool"

+			/>

+		</Configuration>

+		<Configuration

+			Name="PGInstrument|Win32"

+			ConfigurationType="2"

+			InheritedPropertySheets=".\pyd.vsprops;.\pginstrument.vsprops"

+			CharacterSet="0"

+			WholeProgramOptimization="1"

+			>

+			<Tool

+				Name="VCPreBuildEventTool"

+			/>

+			<Tool

+				Name="VCCustomBuildTool"

+			/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"

+			/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"

+			/>

+			<Tool

+				Name="VCMIDLTool"

+			/>

+			<Tool

+				Name="VCCLCompilerTool"

+			/>

+			<Tool

+				Name="VCManagedResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCPreLinkEventTool"

+			/>

+			<Tool

+				Name="VCLinkerTool"

+				BaseAddress="0x1e1F0000"

+			/>

+			<Tool

+				Name="VCALinkTool"

+			/>

+			<Tool

+				Name="VCManifestTool"

+			/>

+			<Tool

+				Name="VCXDCMakeTool"

+			/>

+			<Tool

+				Name="VCBscMakeTool"

+			/>

+			<Tool

+				Name="VCFxCopTool"

+			/>

+			<Tool

+				Name="VCAppVerifierTool"

+			/>

+			<Tool

+				Name="VCPostBuildEventTool"

+			/>

+		</Configuration>

+		<Configuration

+			Name="PGInstrument|x64"

+			ConfigurationType="2"

+			InheritedPropertySheets=".\pyd.vsprops;.\x64.vsprops;.\pginstrument.vsprops"

+			CharacterSet="0"

+			WholeProgramOptimization="1"

+			>

+			<Tool

+				Name="VCPreBuildEventTool"

+			/>

+			<Tool

+				Name="VCCustomBuildTool"

+			/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"

+			/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"

+			/>

+			<Tool

+				Name="VCMIDLTool"

+				TargetEnvironment="3"

+			/>

+			<Tool

+				Name="VCCLCompilerTool"

+			/>

+			<Tool

+				Name="VCManagedResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCPreLinkEventTool"

+			/>

+			<Tool

+				Name="VCLinkerTool"

+				BaseAddress="0x1e1F0000"

+				TargetMachine="17"

+			/>

+			<Tool

+				Name="VCALinkTool"

+			/>

+			<Tool

+				Name="VCManifestTool"

+			/>

+			<Tool

+				Name="VCXDCMakeTool"

+			/>

+			<Tool

+				Name="VCBscMakeTool"

+			/>

+			<Tool

+				Name="VCFxCopTool"

+			/>

+			<Tool

+				Name="VCAppVerifierTool"

+			/>

+			<Tool

+				Name="VCPostBuildEventTool"

+			/>

+		</Configuration>

+		<Configuration

+			Name="PGUpdate|Win32"

+			ConfigurationType="2"

+			InheritedPropertySheets=".\pyd.vsprops;.\pgupdate.vsprops"

+			CharacterSet="0"

+			WholeProgramOptimization="1"

+			>

+			<Tool

+				Name="VCPreBuildEventTool"

+			/>

+			<Tool

+				Name="VCCustomBuildTool"

+			/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"

+			/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"

+			/>

+			<Tool

+				Name="VCMIDLTool"

+			/>

+			<Tool

+				Name="VCCLCompilerTool"

+			/>

+			<Tool

+				Name="VCManagedResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCPreLinkEventTool"

+			/>

+			<Tool

+				Name="VCLinkerTool"

+				BaseAddress="0x1e1F0000"

+			/>

+			<Tool

+				Name="VCALinkTool"

+			/>

+			<Tool

+				Name="VCManifestTool"

+			/>

+			<Tool

+				Name="VCXDCMakeTool"

+			/>

+			<Tool

+				Name="VCBscMakeTool"

+			/>

+			<Tool

+				Name="VCFxCopTool"

+			/>

+			<Tool

+				Name="VCAppVerifierTool"

+			/>

+			<Tool

+				Name="VCPostBuildEventTool"

+			/>

+		</Configuration>

+		<Configuration

+			Name="PGUpdate|x64"

+			ConfigurationType="2"

+			InheritedPropertySheets=".\pyd.vsprops;.\x64.vsprops;.\pgupdate.vsprops"

+			CharacterSet="0"

+			WholeProgramOptimization="1"

+			>

+			<Tool

+				Name="VCPreBuildEventTool"

+			/>

+			<Tool

+				Name="VCCustomBuildTool"

+			/>

+			<Tool

+				Name="VCXMLDataGeneratorTool"

+			/>

+			<Tool

+				Name="VCWebServiceProxyGeneratorTool"

+			/>

+			<Tool

+				Name="VCMIDLTool"

+				TargetEnvironment="3"

+			/>

+			<Tool

+				Name="VCCLCompilerTool"

+			/>

+			<Tool

+				Name="VCManagedResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCResourceCompilerTool"

+			/>

+			<Tool

+				Name="VCPreLinkEventTool"

+			/>

+			<Tool

+				Name="VCLinkerTool"

+				BaseAddress="0x1e1F0000"

+				TargetMachine="17"

+			/>

+			<Tool

+				Name="VCALinkTool"

+			/>

+			<Tool

+				Name="VCManifestTool"

+			/>

+			<Tool

+				Name="VCXDCMakeTool"

+			/>

+			<Tool

+				Name="VCBscMakeTool"

+			/>

+			<Tool

+				Name="VCFxCopTool"

+			/>

+			<Tool

+				Name="VCAppVerifierTool"

+			/>

+			<Tool

+				Name="VCPostBuildEventTool"

+			/>

+		</Configuration>

+	</Configurations>

+	<References>

+	</References>

+	<Files>

+		<Filter

+			Name="Source Files"

+			>

+			<File

+				RelativePath="..\Modules\_testbuffer.c"

+				>

+			</File>

+		</Filter>

+	</Files>

+	<Globals>

+	</Globals>

+</VisualStudioProject>

diff --git a/PCbuild/pcbuild.sln b/PCbuild/pcbuild.sln
index 9efb6d9..992e66a 100644
--- a/PCbuild/pcbuild.sln
+++ b/PCbuild/pcbuild.sln
@@ -142,6 +142,11 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "python3dll", "python3dll.vc
 EndProject

 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "xxlimited", "xxlimited.vcproj", "{F749B822-B489-4CA5-A3AD-CE078F5F338A}"

 EndProject

+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testbuffer", "_testbuffer.vcproj", "{A2697BD3-28C1-4AEC-9106-8B748639FD16}"

+	ProjectSection(ProjectDependencies) = postProject

+		{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26} = {CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}

+	EndProjectSection

+EndProject

 Global

 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

 		Debug|Win32 = Debug|Win32

@@ -609,6 +614,22 @@ Global
 		{F749B822-B489-4CA5-A3AD-CE078F5F338A}.Release|Win32.Build.0 = Release|Win32

 		{F749B822-B489-4CA5-A3AD-CE078F5F338A}.Release|x64.ActiveCfg = Release|x64

 		{F749B822-B489-4CA5-A3AD-CE078F5F338A}.Release|x64.Build.0 = Release|x64

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.Debug|Win32.ActiveCfg = Debug|Win32

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.Debug|Win32.Build.0 = Debug|Win32

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.Debug|x64.ActiveCfg = Debug|x64

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.Debug|x64.Build.0 = Debug|x64

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.PGInstrument|Win32.Build.0 = PGInstrument|Win32

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.PGInstrument|x64.ActiveCfg = PGInstrument|x64

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.PGInstrument|x64.Build.0 = PGInstrument|x64

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.PGUpdate|Win32.Build.0 = PGUpdate|Win32

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.PGUpdate|x64.ActiveCfg = PGUpdate|x64

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.PGUpdate|x64.Build.0 = PGUpdate|x64

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.Release|Win32.ActiveCfg = Release|Win32

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.Release|Win32.Build.0 = Release|Win32

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.Release|x64.ActiveCfg = Release|x64

+		{A2697BD3-28C1-4AEC-9106-8B748639FD16}.Release|x64.Build.0 = Release|x64

 	EndGlobalSection

 	GlobalSection(SolutionProperties) = preSolution

 		HideSolutionNode = FALSE

diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index f47d555..2146221 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -92,6 +92,9 @@ _socket
 _testcapi
     tests of the Python C API, run via Lib/test/test_capi.py, and
     implemented by module Modules/_testcapimodule.c
+_testbuffer
+    buffer protocol tests, run via Lib/test/test_buffer.py, and
+    implemented by module Modules/_testbuffer.c
 pyexpat
     Python wrapper for accelerated XML parsing, which incorporates stable
     code from the Expat project:  http://sourceforge.net/projects/expat/