Update build.yml to test including process dumps

Needed to help diagnose issue CommunityToolkit/Windows#347

.github/workflows/build.yml

@@ -17,7 +17,7 @@ on:
 
 env:
   DOTNET_VERSION: ${{ '8.0.x' }}
-  ENABLE_DIAGNOSTICS: false
+  ENABLE_DIAGNOSTICS: true
   #COREHOST_TRACE: 1
   COREHOST_TRACEFILE: corehosttrace.log
 
@@ -153,6 +153,44 @@ jobs:
           minimum-size: 32GB
           maximum-size: 32GB
           disk-root: "C:"
+
+      - name: Enable Crash Dumps
+        if: ${{ env.ENABLE_DIAGNOSTICS == 'true' }}
+        shell: pwsh
+        run: |
+          # If we set the registry from a 32-bit process on a 64-bit machine, we will set the "virtualized" syswow registry. 
+          # For crash dump collection we always want to set the "native" registry, so we make sure to invoke the native cmd.exe
+          $nativeCmdPath = "$env:SystemRoot\system32\cmd.exe"
+          if([Environment]::Is64BitOperatingSystem -and ![Environment]::Is64BitProcess)
+          {
+              # The "sysnative" path is a 'magic' path that allows a 32-bit process to invoke the native 64-bit cmd.exe.
+              $nativeCmdPath = "$env:SystemRoot\sysnative\cmd.exe"
+          }
+          
+          if(!$dumpFolder)
+          {
+              $dumpFolder = "C:\dumps"
+          }
+          
+          function Enable-CrashDumpsForProcesses {
+              Param([string[]]$namesOfProcessesForDumpCollection)
+          
+              foreach($procName in $namesOfProcessesForDumpCollection )
+              {
+                  Write-Host "Enabling local crash dumps for $procName"
+                  & $nativeCmdPath /c reg add "HKLM\Software\Microsoft\Windows\Windows Error Reporting\LocalDumps\$procName" /v DumpFolder /t REG_EXPAND_SZ /d $dumpFolder /f
+                  & $nativeCmdPath /c reg add "HKLM\Software\Microsoft\Windows\Windows Error Reporting\LocalDumps\$procName" /v DumpType /t REG_DWORD /d 2 /f
+                  & $nativeCmdPath /c reg add "HKLM\Software\Microsoft\Windows\Windows Error Reporting\LocalDumps\$procName" /v DumpCount /t REG_DWORD /d 3 /f
+              }
+          }
+          
+          # enable dump collection for our test apps:
+          $namesOfProcessesForDumpCollection = @(
+              "CommunityToolkit.Tests.Uwp.exe",
+              "CommunityToolkit.Tests.WinAppSdk.exe",
+              "VSTest.Console.exe")
+          
+          Enable-CrashDumpsForProcesses $namesOfProcessesForDumpCollection
           
       - name: Install .NET SDK v${{ env.DOTNET_VERSION }}
         uses: actions/setup-dotnet@v4
@@ -235,6 +273,13 @@ jobs:
           name: new-experiment-logs
           path: ./**/*.*log
 
+      - name: Artifact - Process Dumps
+        uses: actions/upload-artifact@v4
+        if: ${{ (env.ENABLE_DIAGNOSTICS == 'true' || env.COREHOST_TRACE != '') && always() }}
+        with:
+          name: new-experiment-dumps
+          path: C:/dumps/*.*dmp
+
   wasm-linux:
     runs-on: ubuntu-latest
     env: