Guard against marshaling invalid handle as ObjectId

dahlbyk · dahlbyk · commit 2f7a40a9419d · 2013-03-25T22:31:21.000-05:00
diff --git a/LibGit2Sharp/Core/Handles/OidSafeHandle.cs b/LibGit2Sharp/Core/Handles/OidSafeHandle.cs
@@ -6,7 +6,7 @@ internal class OidSafeHandle : NotOwnedSafeHandleBase
     {
         private GitOid? MarshalAsGitOid()
         {
-            return (GitOid?)Marshal.PtrToStructure(handle, typeof(GitOid));
+            return IsInvalid ? null : (GitOid?)Marshal.PtrToStructure(handle, typeof(GitOid));
         }
 
         public ObjectId MarshalAsObjectId()

Original file line number	Diff line number	Diff line change
`@@ -6,7 +6,7 @@ internal class OidSafeHandle : NotOwnedSafeHandleBase`
`6`	`6`	`{`
`7`	`7`	`private GitOid? MarshalAsGitOid()`
`8`	`8`	`{`
`9`		`- return (GitOid?)Marshal.PtrToStructure(handle, typeof(GitOid));`
	`9`	`+ return IsInvalid ? null : (GitOid?)Marshal.PtrToStructure(handle, typeof(GitOid));`
`10`	`10`	`}`
`11`	`11`
`12`	`12`	`public ObjectId MarshalAsObjectId()`