merge heads
diff --git a/Misc/NEWS b/Misc/NEWS
index 6175be1..36d305d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,8 @@
 Core and Builtins
 -----------------
 
+- Issue #16672: Improve performance tracing performance
+
 - Issue #14470: Remove w9xpopen support per PEP 11.
 
 - Issue #9856: Replace deprecation warning with raising TypeError
diff --git a/PC/VC6/pcbuild.dsw b/PC/VC6/pcbuild.dsw
index 87b2ebc..276c629 100644
--- a/PC/VC6/pcbuild.dsw
+++ b/PC/VC6/pcbuild.dsw
@@ -114,7 +114,6 @@
     Project_Dep_Name python

     End Project Dependency

     Begin Project Dependency

-    Project_Dep_Name w9xpopen

     End Project Dependency

 }}}

 

@@ -262,19 +261,7 @@
     End Project Dependency

 }}}

 

-###############################################################################

-

-Project: "w9xpopen"=".\w9xpopen.dsp" - Package Owner=<4>

-

-Package=<5>

-{{{

-}}}

-

-Package=<4>

-{{{

-}}}

-

-###############################################################################

+##############################################################################

 

 Project: "winsound"=".\winsound.dsp" - Package Owner=<4>

 

diff --git a/PC/VC6/w9xpopen.dsp b/PC/VC6/w9xpopen.dsp
deleted file mode 100644
index 6a6403c..0000000
--- a/PC/VC6/w9xpopen.dsp
+++ /dev/null
@@ -1,97 +0,0 @@
-# Microsoft Developer Studio Project File - Name="w9xpopen" - Package Owner=<4>

-# Microsoft Developer Studio Generated Build File, Format Version 6.00

-# ** DO NOT EDIT **

-

-# TARGTYPE "Win32 (x86) Application" 0x0101

-

-CFG=w9xpopen - Win32 Debug

-!MESSAGE This is not a valid makefile. To build this project using NMAKE,

-!MESSAGE use the Export Makefile command and run

-!MESSAGE 

-!MESSAGE NMAKE /f "w9xpopen.mak".

-!MESSAGE 

-!MESSAGE You can specify a configuration when running NMAKE

-!MESSAGE by defining the macro CFG on the command line. For example:

-!MESSAGE 

-!MESSAGE NMAKE /f "w9xpopen.mak" CFG="w9xpopen - Win32 Debug"

-!MESSAGE 

-!MESSAGE Possible choices for configuration are:

-!MESSAGE 

-!MESSAGE "w9xpopen - Win32 Release" (based on "Win32 (x86) Application")

-!MESSAGE "w9xpopen - Win32 Debug" (based on "Win32 (x86) Application")

-!MESSAGE 

-

-# Begin Project

-# PROP AllowPerConfigDependencies 0

-# PROP Scc_ProjName ""

-# PROP Scc_LocalPath ""

-CPP=cl.exe

-MTL=midl.exe

-RSC=rc.exe

-

-!IF  "$(CFG)" == "w9xpopen - Win32 Release"

-

-# PROP BASE Use_MFC 0

-# PROP BASE Use_Debug_Libraries 0

-# PROP BASE Output_Dir "Release"

-# PROP BASE Intermediate_Dir "Release"

-# PROP BASE Target_Dir ""

-# PROP Use_MFC 0

-# PROP Use_Debug_Libraries 0

-# PROP Output_Dir "."

-# PROP Intermediate_Dir "x86-temp-release\w9xpopen"

-# PROP Ignore_Export_Lib 0

-# PROP Target_Dir ""

-# ADD BASE CPP /nologo /W3 /GX /O2 /D "Py_BUILD_CORE_MODULE" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /YX /FD /c

-# ADD CPP /nologo /MD /W3 /GX /O2 /D "Py_BUILD_CORE_MODULE" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /YX /FD /c

-# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32

-# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32

-# ADD BASE RSC /l 0xc09 /d "NDEBUG"

-# ADD RSC /l 0xc09 /d "NDEBUG"

-BSC32=bscmake.exe

-# ADD BASE BSC32 /nologo

-# ADD BSC32 /nologo

-LINK32=link.exe

-# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /machine:I386

-# ADD LINK32 user32.lib /nologo /machine:I386

-# SUBTRACT LINK32 /pdb:none

-

-!ELSEIF  "$(CFG)" == "w9xpopen - Win32 Debug"

-

-# PROP BASE Use_MFC 0

-# PROP BASE Use_Debug_Libraries 1

-# PROP BASE Output_Dir "Debug"

-# PROP BASE Intermediate_Dir "Debug"

-# PROP BASE Target_Dir ""

-# PROP Use_MFC 0

-# PROP Use_Debug_Libraries 1

-# PROP Output_Dir "."

-# PROP Intermediate_Dir "x86-temp-debug\w9xpopen"

-# PROP Ignore_Export_Lib 0

-# PROP Target_Dir ""

-# ADD BASE CPP /nologo /W3 /Gm /GX /ZI /Od /D "Py_BUILD_CORE_MODULE" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /YX /FD /GZ /c

-# ADD CPP /nologo /MDd /W3 /Gm /GX /Zi /Od /D "Py_BUILD_CORE_MODULE" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /YX /FD /GZ /c

-# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32

-# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32

-# ADD BASE RSC /l 0xc09 /d "_DEBUG"

-# ADD RSC /l 0xc09 /d "_DEBUG"

-BSC32=bscmake.exe

-# ADD BASE BSC32 /nologo

-# ADD BSC32 /nologo

-LINK32=link.exe

-# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /debug /machine:I386 /pdbtype:sept

-# ADD LINK32 user32.lib /nologo /debug /machine:I386 /out:"./w9xpopen_d.exe" /pdbtype:sept

-# SUBTRACT LINK32 /pdb:none

-

-!ENDIF 

-

-# Begin Target

-

-# Name "w9xpopen - Win32 Release"

-# Name "w9xpopen - Win32 Debug"

-# Begin Source File

-

-SOURCE=..\w9xpopen.c

-# End Source File

-# End Target

-# End Project

diff --git a/PC/VS7.1/pcbuild.sln b/PC/VS7.1/pcbuild.sln
index 720f19c..d871e07 100644
--- a/PC/VS7.1/pcbuild.sln
+++ b/PC/VS7.1/pcbuild.sln
@@ -61,10 +61,6 @@
 		{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26} = {CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}

 	EndProjectSection

 EndProject

-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "w9xpopen", "w9xpopen.vcproj", "{E9E0A1F6-0009-4E8C-B8F8-1B8F5D49A058}"

-	ProjectSection(ProjectDependencies) = postProject

-	EndProjectSection

-EndProject

 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "winsound", "winsound.vcproj", "{51F35FAE-FB92-4B2C-9187-1542C065AD77}"

 	ProjectSection(ProjectDependencies) = postProject

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

diff --git a/PC/VS7.1/python.iss b/PC/VS7.1/python.iss
index ca6a3c0..c0fd95b 100644
--- a/PC/VS7.1/python.iss
+++ b/PC/VS7.1/python.iss
@@ -111,7 +111,6 @@
 
 Source: python.exe; DestDir: {app}; CopyMode: alwaysoverwrite; Components: main
 Source: pythonw.exe; DestDir: {app}; CopyMode: alwaysoverwrite; Components: main
-Source: w9xpopen.exe; DestDir: {app}; CopyMode: alwaysoverwrite; Components: main
 
 
 Source: DLLs\tcl83.dll; DestDir: {app}\DLLs; CopyMode: alwaysoverwrite; Components: tk
diff --git a/PC/VS7.1/python20.wse b/PC/VS7.1/python20.wse
index 2e7f6ad3..9ea0b18 100644
--- a/PC/VS7.1/python20.wse
+++ b/PC/VS7.1/python20.wse
@@ -1702,11 +1702,6 @@
   Destination=%MAINDIR%\pythonw.exe
   Flags=0000000000000010
 end
-item: Install File
-  Source=.\w9xpopen.exe
-  Destination=%MAINDIR%\w9xpopen.exe
-  Flags=0000000000000010
-end
 item: Remark
 end
 item: Remark
diff --git a/PC/VS7.1/w9xpopen.vcproj b/PC/VS7.1/w9xpopen.vcproj
deleted file mode 100644
index b9f3b4e..0000000
--- a/PC/VS7.1/w9xpopen.vcproj
+++ /dev/null
@@ -1,121 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>

-<VisualStudioProject

-	ProjectType="Visual C++"

-	Version="7.10"

-	Name="w9xpopen"

-	SccProjectName=""

-	SccLocalPath="">

-	<Platforms>

-		<Platform

-			Name="Win32"/>

-	</Platforms>

-	<Configurations>

-		<Configuration

-			Name="Debug|Win32"

-			OutputDirectory=".\."

-			IntermediateDirectory=".\x86-temp-debug\w9xpopen"

-			ConfigurationType="1"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="FALSE"

-			CharacterSet="2">

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="0"

-				PreprocessorDefinitions="Py_BUILD_CORE_MODULE;WIN32;_DEBUG;_WINDOWS"

-				BasicRuntimeChecks="3"

-				RuntimeLibrary="3"

-				UsePrecompiledHeader="2"

-				WarningLevel="3"

-				SuppressStartupBanner="TRUE"

-				DebugInformationFormat="3"/>

-			<Tool

-				Name="VCCustomBuildTool"/>

-			<Tool

-				Name="VCLinkerTool"

-				OutputFile="./w9xpopen_d.exe"

-				LinkIncremental="1"

-				SuppressStartupBanner="TRUE"

-				GenerateDebugInformation="TRUE"

-				ProgramDatabaseFile=".\./w9xpopen_d.pdb"

-				TargetMachine="1"/>

-			<Tool

-				Name="VCMIDLTool"/>

-			<Tool

-				Name="VCPostBuildEventTool"/>

-			<Tool

-				Name="VCPreBuildEventTool"/>

-			<Tool

-				Name="VCPreLinkEventTool"/>

-			<Tool

-				Name="VCResourceCompilerTool"/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"/>

-			<Tool

-				Name="VCWebDeploymentTool"/>

-			<Tool

-				Name="VCManagedWrapperGeneratorTool"/>

-			<Tool

-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>

-		</Configuration>

-		<Configuration

-			Name="Release|Win32"

-			OutputDirectory=".\."

-			IntermediateDirectory=".\x86-temp-release\w9xpopen"

-			ConfigurationType="1"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="FALSE"

-			CharacterSet="2">

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="2"

-				InlineFunctionExpansion="1"

-				PreprocessorDefinitions="Py_BUILD_CORE_MODULE;WIN32;NDEBUG;_WINDOWS"

-				StringPooling="TRUE"

-				RuntimeLibrary="2"

-				EnableFunctionLevelLinking="TRUE"

-				UsePrecompiledHeader="2"

-				WarningLevel="3"

-				SuppressStartupBanner="TRUE"/>

-			<Tool

-				Name="VCCustomBuildTool"/>

-			<Tool

-				Name="VCLinkerTool"

-				OutputFile=".\./w9xpopen.exe"

-				LinkIncremental="1"

-				SuppressStartupBanner="TRUE"

-				ProgramDatabaseFile=".\./w9xpopen.pdb"

-				TargetMachine="1"/>

-			<Tool

-				Name="VCMIDLTool"/>

-			<Tool

-				Name="VCPostBuildEventTool"/>

-			<Tool

-				Name="VCPreBuildEventTool"/>

-			<Tool

-				Name="VCPreLinkEventTool"/>

-			<Tool

-				Name="VCResourceCompilerTool"/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"/>

-			<Tool

-				Name="VCWebDeploymentTool"/>

-			<Tool

-				Name="VCManagedWrapperGeneratorTool"/>

-			<Tool

-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>

-		</Configuration>

-	</Configurations>

-	<References>

-	</References>

-	<Files>

-		<File

-			RelativePath="..\..\PC\w9xpopen.c">

-		</File>

-	</Files>

-	<Globals>

-	</Globals>

-</VisualStudioProject>

diff --git a/PC/VS8.0/pcbuild.sln b/PC/VS8.0/pcbuild.sln
index 9aca4aa..2ad2176 100644
--- a/PC/VS8.0/pcbuild.sln
+++ b/PC/VS8.0/pcbuild.sln
@@ -20,11 +20,6 @@
 		{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26} = {CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}

 	EndProjectSection

 EndProject

-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "w9xpopen", "w9xpopen.vcproj", "{E9E0A1F6-0009-4E8C-B8F8-1B8F5D49A058}"

-	ProjectSection(ProjectDependencies) = postProject

-		{6DE10744-E396-40A5-B4E2-1B69AA7C8D31} = {6DE10744-E396-40A5-B4E2-1B69AA7C8D31}

-	EndProjectSection

-EndProject

 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_buildinfo", "make_buildinfo.vcproj", "{C73F0EC1-358B-4177-940F-0846AC8B04CD}"

 EndProject

 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{553EC33E-9816-4996-A660-5D6186A0B0B3}"

diff --git a/PC/VS8.0/w9xpopen.vcproj b/PC/VS8.0/w9xpopen.vcproj
deleted file mode 100644
index e14d206..0000000
--- a/PC/VS8.0/w9xpopen.vcproj
+++ /dev/null
@@ -1,576 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>

-<VisualStudioProject

-	ProjectType="Visual C++"

-	Version="8.00"

-	Name="w9xpopen"

-	ProjectGUID="{E9E0A1F6-0009-4E8C-B8F8-1B8F5D49A058}"

-	RootNamespace="w9xpopen"

-	TargetFrameworkVersion="131072"

-	>

-	<Platforms>

-		<Platform

-			Name="Win32"

-		/>

-		<Platform

-			Name="x64"

-		/>

-	</Platforms>

-	<ToolFiles>

-	</ToolFiles>

-	<Configurations>

-		<Configuration

-			Name="Debug|Win32"

-			ConfigurationType="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\debug.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="0"

-			>

-			<Tool

-				Name="VCPreBuildEventTool"

-			/>

-			<Tool

-				Name="VCCustomBuildTool"

-			/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="0"

-				BasicRuntimeChecks="3"

-				RuntimeLibrary="1"

-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCPreLinkEventTool"

-			/>

-			<Tool

-				Name="VCLinkerTool"

-				SubSystem="1"

-			/>

-			<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="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\x64.vsprops;.\debug.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="2"

-			>

-			<Tool

-				Name="VCPreBuildEventTool"

-			/>

-			<Tool

-				Name="VCCustomBuildTool"

-			/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-				TargetEnvironment="3"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="0"

-				BasicRuntimeChecks="3"

-				RuntimeLibrary="1"

-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCPreLinkEventTool"

-			/>

-			<Tool

-				Name="VCLinkerTool"

-				SubSystem="1"

-			/>

-			<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="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\release.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="2"

-			>

-			<Tool

-				Name="VCPreBuildEventTool"

-			/>

-			<Tool

-				Name="VCCustomBuildTool"

-			/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="2"

-				InlineFunctionExpansion="1"

-				StringPooling="true"

-				RuntimeLibrary="0"

-				EnableFunctionLevelLinking="true"

-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCPreLinkEventTool"

-			/>

-			<Tool

-				Name="VCLinkerTool"

-				GenerateDebugInformation="false"

-				SubSystem="1"

-			/>

-			<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="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\x64.vsprops;.\release.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="2"

-			>

-			<Tool

-				Name="VCPreBuildEventTool"

-			/>

-			<Tool

-				Name="VCCustomBuildTool"

-			/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-				TargetEnvironment="3"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="2"

-				InlineFunctionExpansion="1"

-				StringPooling="true"

-				RuntimeLibrary="0"

-				EnableFunctionLevelLinking="true"

-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCPreLinkEventTool"

-			/>

-			<Tool

-				Name="VCLinkerTool"

-				GenerateDebugInformation="false"

-				SubSystem="1"

-			/>

-			<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="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\release.vsprops;.\pginstrument.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="2"

-			>

-			<Tool

-				Name="VCPreBuildEventTool"

-			/>

-			<Tool

-				Name="VCCustomBuildTool"

-			/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="2"

-				InlineFunctionExpansion="1"

-				StringPooling="true"

-				RuntimeLibrary="0"

-				EnableFunctionLevelLinking="true"

-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCPreLinkEventTool"

-			/>

-			<Tool

-				Name="VCLinkerTool"

-				GenerateDebugInformation="false"

-				SubSystem="1"

-				ImportLibrary=""

-			/>

-			<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="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\x64.vsprops;.\release.vsprops;.\pginstrument.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="2"

-			>

-			<Tool

-				Name="VCPreBuildEventTool"

-			/>

-			<Tool

-				Name="VCCustomBuildTool"

-			/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-				TargetEnvironment="3"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="2"

-				InlineFunctionExpansion="1"

-				StringPooling="true"

-				RuntimeLibrary="0"

-				EnableFunctionLevelLinking="true"

-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCPreLinkEventTool"

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-			<Tool

-				Name="VCLinkerTool"

-				GenerateDebugInformation="false"

-				SubSystem="1"

-				ImportLibrary=""

-				TargetMachine="17"

-			/>

-			<Tool

-				Name="VCALinkTool"

-			/>

-			<Tool

-				Name="VCManifestTool"

-			/>

-			<Tool

-				Name="VCXDCMakeTool"

-			/>

-			<Tool

-				Name="VCBscMakeTool"

-			/>

-			<Tool

-				Name="VCFxCopTool"

-			/>

-			<Tool

-				Name="VCAppVerifierTool"

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-			<Tool

-				Name="VCPostBuildEventTool"

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-		<Configuration

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-			ConfigurationType="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\release.vsprops;.\pgupdate.vsprops"

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-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

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-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

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-			<Tool

-				Name="VCLinkerTool"

-				GenerateDebugInformation="false"

-				SubSystem="1"

-				ImportLibrary=""

-			/>

-			<Tool

-				Name="VCALinkTool"

-			/>

-			<Tool

-				Name="VCManifestTool"

-			/>

-			<Tool

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-			/>

-			<Tool

-				Name="VCBscMakeTool"

-			/>

-			<Tool

-				Name="VCFxCopTool"

-			/>

-			<Tool

-				Name="VCAppVerifierTool"

-			/>

-			<Tool

-				Name="VCPostBuildEventTool"

-			/>

-		</Configuration>

-		<Configuration

-			Name="PGUpdate|x64"

-			ConfigurationType="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\x64.vsprops;.\release.vsprops;.\pgupdate.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="2"

-			>

-			<Tool

-				Name="VCPreBuildEventTool"

-			/>

-			<Tool

-				Name="VCCustomBuildTool"

-			/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-				TargetEnvironment="3"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="2"

-				InlineFunctionExpansion="1"

-				StringPooling="true"

-				RuntimeLibrary="0"

-				EnableFunctionLevelLinking="true"

-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCPreLinkEventTool"

-			/>

-			<Tool

-				Name="VCLinkerTool"

-				GenerateDebugInformation="false"

-				SubSystem="1"

-				ImportLibrary=""

-				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="..\..\PC\w9xpopen.c"

-				>

-			</File>

-		</Filter>

-	</Files>

-	<Globals>

-	</Globals>

-</VisualStudioProject>

diff --git a/PC/VS9.0/pcbuild.sln b/PC/VS9.0/pcbuild.sln
index 9956e46..3b73fce 100644
--- a/PC/VS9.0/pcbuild.sln
+++ b/PC/VS9.0/pcbuild.sln
@@ -20,11 +20,6 @@
 		{CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26} = {CF7AC3D1-E2DF-41D2-BEA6-1E2556CDEA26}

 	EndProjectSection

 EndProject

-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "w9xpopen", "w9xpopen.vcproj", "{E9E0A1F6-0009-4E8C-B8F8-1B8F5D49A058}"

-	ProjectSection(ProjectDependencies) = postProject

-		{6DE10744-E396-40A5-B4E2-1B69AA7C8D31} = {6DE10744-E396-40A5-B4E2-1B69AA7C8D31}

-	EndProjectSection

-EndProject

 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_buildinfo", "make_buildinfo.vcproj", "{C73F0EC1-358B-4177-940F-0846AC8B04CD}"

 EndProject

 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{553EC33E-9816-4996-A660-5D6186A0B0B3}"

diff --git a/PC/VS9.0/w9xpopen.vcproj b/PC/VS9.0/w9xpopen.vcproj
deleted file mode 100644
index 7a85b00..0000000
--- a/PC/VS9.0/w9xpopen.vcproj
+++ /dev/null
@@ -1,576 +0,0 @@
-<?xml version="1.0" encoding="Windows-1252"?>

-<VisualStudioProject

-	ProjectType="Visual C++"

-	Version="9.00"

-	Name="w9xpopen"

-	ProjectGUID="{E9E0A1F6-0009-4E8C-B8F8-1B8F5D49A058}"

-	RootNamespace="w9xpopen"

-	TargetFrameworkVersion="131072"

-	>

-	<Platforms>

-		<Platform

-			Name="Win32"

-		/>

-		<Platform

-			Name="x64"

-		/>

-	</Platforms>

-	<ToolFiles>

-	</ToolFiles>

-	<Configurations>

-		<Configuration

-			Name="Debug|Win32"

-			ConfigurationType="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\debug.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="0"

-			>

-			<Tool

-				Name="VCPreBuildEventTool"

-			/>

-			<Tool

-				Name="VCCustomBuildTool"

-			/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"

-			/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

-			/>

-			<Tool

-				Name="VCMIDLTool"

-			/>

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="0"

-				BasicRuntimeChecks="3"

-				RuntimeLibrary="1"

-			/>

-			<Tool

-				Name="VCManagedResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCResourceCompilerTool"

-			/>

-			<Tool

-				Name="VCPreLinkEventTool"

-			/>

-			<Tool

-				Name="VCLinkerTool"

-				SubSystem="1"

-			/>

-			<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="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\x64.vsprops;.\debug.vsprops"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="false"

-			CharacterSet="2"

-			>

-			<Tool

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-				Name="VCCustomBuildTool"

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-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"

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-				Name="VCMIDLTool"

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-			/>

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-		<Configuration

-			Name="Release|Win32"

-			ConfigurationType="1"

-			InheritedPropertySheets=".\pyproject.vsprops;.\release.vsprops"

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-	<References>

-	</References>

-	<Files>

-		<Filter

-			Name="Source Files"

-			>

-			<File

-				RelativePath="..\..\PC\w9xpopen.c"

-				>

-			</File>

-		</Filter>

-	</Files>

-	<Globals>

-	</Globals>

-</VisualStudioProject>

diff --git a/Python/ceval.c b/Python/ceval.c
index 32c203e..5f6f35c 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -1277,7 +1277,8 @@
         /* line-by-line tracing support */
 
         if (_Py_TracingPossible &&
-            tstate->c_tracefunc != NULL && !tstate->tracing) {
+                tstate->c_tracefunc != NULL && !tstate->tracing &&
+                f->f_trace != NULL) {
             int err;
             /* see maybe_call_line_trace
                for expository comments */
@@ -3008,7 +3009,7 @@
         /* Log traceback info. */
         PyTraceBack_Here(f);
 
-        if (tstate->c_tracefunc != NULL)
+        if (tstate->c_tracefunc != NULL && f->f_trace != NULL)
             call_exc_trace(tstate->c_tracefunc, tstate->c_traceobj, f);
 
 fast_block_end:
@@ -3127,7 +3128,7 @@
     }
 
     if (tstate->use_tracing) {
-        if (tstate->c_tracefunc) {
+        if (tstate->c_tracefunc && f->f_trace != NULL) {
             if (why == WHY_RETURN || why == WHY_YIELD) {
                 if (call_trace(tstate->c_tracefunc,
                                tstate->c_traceobj, f,