[Build] Add null check for InputSource in CompileNativeAssembly

davidnguyen-tech · Copilot · davidnguyen-tech · commit 34eaa6bbddfe · 2026-03-30T17:51:40.000+02:00
Co-authored-by: Copilot &lt;223556219+Copilot@users.noreply.github.com&gt;
diff --git a/src/Xamarin.Android.Build.Tasks/Tasks/CompileNativeAssembly.cs b/src/Xamarin.Android.Build.Tasks/Tasks/CompileNativeAssembly.cs
@@ -44,7 +44,7 @@ public override System.Threading.Tasks.Task RunTaskAsync ()
 
 		void RunAssembler (Config config)
 		{
-			if (config.OutputFile is not null && File.Exists (config.OutputFile)) {
+			if (config.OutputFile is not null && config.InputSource is not null && File.Exists (config.OutputFile)) {
 				string sourceFile = Path.Combine (WorkingDirectory, Path.GetFileName (config.InputSource));
 				if (File.Exists (sourceFile) && File.GetLastWriteTimeUtc (config.OutputFile) >= File.GetLastWriteTimeUtc (sourceFile)) {
 					LogDebugMessage ($"[LLVM llc] Skipping '{Path.GetFileName (config.InputSource)}' because '{Path.GetFileName (config.OutputFile)}' is up to date");

Original file line number	Diff line number	Diff line change
`@@ -44,7 +44,7 @@ public override System.Threading.Tasks.Task RunTaskAsync ()`
`44`	`44`
`45`	`45`	`void RunAssembler (Config config)`
`46`	`46`	`{`
`47`		`- if (config.OutputFile is not null && File.Exists (config.OutputFile)) {`
	`47`	`+ if (config.OutputFile is not null && config.InputSource is not null && File.Exists (config.OutputFile)) {`
`48`	`48`	`string sourceFile = Path.Combine (WorkingDirectory, Path.GetFileName (config.InputSource));`
`49`	`49`	`if (File.Exists (sourceFile) && File.GetLastWriteTimeUtc (config.OutputFile) >= File.GetLastWriteTimeUtc (sourceFile)) {`
`50`	`50`	`LogDebugMessage ($"[LLVM llc] Skipping '{Path.GetFileName (config.InputSource)}' because '{Path.GetFileName (config.OutputFile)}' is up to date");`