https://bugzilla.novell.com/show_bug.cgi?id=464229
Summary: XmlReader.ReadElementContentAsBase64() hangs
indefinitely and uses 100% CPU on the last read
Product: Mono: Class Libraries
Version: 2.0.x
Platform: x86
OS/Version: All
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Sys.XML
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Found By: Community User
The following program will run to the end and print out "Done" in Windows under
NET (expected behavior according to MSDN documentation). I've tested this
program on Mono 1.9.1 Linux, Mono 1.9.1 Windows, and Mono 2.0.1 Windows and
each time the final call to XmlReader.ReadElementContentAsBase64() will hang
indefinitely and use 100% of the CPU time.
using System;
using System.IO;
using System.Xml;
namespace sandbox
{
class Program
{
static void Main(string[] args)
{
Random rand = new Random();
byte[] randomData = new byte[5000];
rand.NextBytes(randomData);
string xmlString = "<?xml version=\"1.0\"?><data>" +
Convert.ToBase64String(randomData) + "</data>";
TextReader textReader = new StringReader(xmlString);
XmlReader xmlReader = XmlReader.Create(textReader);
xmlReader.ReadToFollowing("data");
int readBytes = 0;
byte[] buffer = new byte[1024];
while ((readBytes = xmlReader.ReadElementContentAsBase64(buffer, 0,
buffer.Length)) > 0)
Console.WriteLine("Read 1024 bytes");
Console.WriteLine("Done");
}
}
}
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