Avoid NullRef if ResolveLinkTarget returns null (#57235)

jozkee · web-flow · commit e0f6071a0f8e · 2021-08-11T18:18:30.000-06:00
diff --git a/src/libraries/Microsoft.Extensions.FileProviders.Physical/src/Internal/FileSystemInfoHelper.cs b/src/libraries/Microsoft.Extensions.FileProviders.Physical/src/Internal/FileSystemInfoHelper.cs
@@ -54,7 +54,7 @@ public static bool IsExcluded(FileSystemInfo fileSystemInfo, ExclusionFilters fi
                 try
                 {
                     FileSystemInfo targetInfo = fileInfo.ResolveLinkTarget(returnFinalTarget: true);
-                    if (targetInfo.Exists)
+                    if (targetInfo != null && targetInfo.Exists)
                     {
                         return targetInfo.LastWriteTimeUtc;
                     }

Original file line number	Diff line number	Diff line change
`@@ -54,7 +54,7 @@ public static bool IsExcluded(FileSystemInfo fileSystemInfo, ExclusionFilters fi`
`54`	`54`	`try`
`55`	`55`	`{`
`56`	`56`	`FileSystemInfo targetInfo = fileInfo.ResolveLinkTarget(returnFinalTarget: true);`
`57`		`- if (targetInfo.Exists)`
	`57`	`+ if (targetInfo != null && targetInfo.Exists)`
`58`	`58`	`{`
`59`	`59`	`return targetInfo.LastWriteTimeUtc;`
`60`	`60`	`}`