PDFBOX-5660: remove redundant check, as suggested by Valery Bokov; closes #213

THausherr · THausherr · commit cf6f32a9d93a · 2025-08-17T12:52:42.000Z
git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1927836 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pdfbox/src/main/java/org/apache/pdfbox/pdfwriter/compress/COSWriterObjectStream.java b/pdfbox/src/main/java/org/apache/pdfbox/pdfwriter/compress/COSWriterObjectStream.java
@@ -172,10 +172,6 @@ private void writeObject(OutputStream output, COSBase object, boolean topLevel)
         {
             return;
         }
-        if (!(object instanceof COSBase))
-        {
-            throw new IOException("Error: Unknown type in object stream:" + object);
-        }
         COSBase base;
         if (object instanceof COSObject)
         {

Original file line number	Diff line number	Diff line change
`@@ -172,10 +172,6 @@ private void writeObject(OutputStream output, COSBase object, boolean topLevel)`
`172`	`172`	`{`
`173`	`173`	`return;`
`174`	`174`	`}`
`175`		`- if (!(object instanceof COSBase))`
`176`		`- {`
`177`		`- throw new IOException("Error: Unknown type in object stream:" + object);`
`178`		`- }`
`179`	`175`	`COSBase base;`
`180`	`176`	`if (object instanceof COSObject)`
`181`	`177`	`{`