Fix handling negative max_length of zlib decompressor

msimacek · msimacek · commit c30f2a14bcda · 2025-08-18T15:11:47.000+02:00
diff --git a/graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/zlib/JavaDecompress.java b/graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/zlib/JavaDecompress.java
@@ -243,7 +243,7 @@ private byte[] createByteArray(byte[] bytes, int length, int maxLength, int bufS
             return EMPTY_BYTE_ARRAY;
         }
 
-        int maxLen = maxLength == 0 ? Integer.MAX_VALUE : maxLength;
+        int maxLen = maxLength <= 0 ? Integer.MAX_VALUE : maxLength;
         byte[] result = new byte[Math.min(maxLen, bufSize)];
 
         int bytesWritten = result.length;

Original file line number	Diff line number	Diff line change
`@@ -243,7 +243,7 @@ private byte[] createByteArray(byte[] bytes, int length, int maxLength, int bufS`
`243`	`243`	`return EMPTY_BYTE_ARRAY;`
`244`	`244`	`}`
`245`	`245`
`246`		`- int maxLen = maxLength == 0 ? Integer.MAX_VALUE : maxLength;`
	`246`	`+ int maxLen = maxLength <= 0 ? Integer.MAX_VALUE : maxLength;`
`247`	`247`	`byte[] result = new byte[Math.min(maxLen, bufSize)];`
`248`	`248`
`249`	`249`	`int bytesWritten = result.length;`