NSData dataWithBytesNoCopy triggers guardMalloc when released

Please see update below

<s:element name="GetFile">
    <s:complexType>
    <s:sequence>
    <s:element minOccurs="0" maxOccurs="1" name="User" type="s:string"/>
    <s:element minOccurs="0" maxOccurs="1" name="Password" type="s:string />
    <s:element minOccurs="0" maxOccurs="1" name="ObjectId" type="s:string"/>
    </s:sequence>
    </s:complexType>
</s:element>
<s:element name="GetFileResponse">
    <s:complexType>
    <s:sequence>
    <!-- This is the return value -->
    <s:element minOccurs="0" maxOccurs="1" 
       name="GetFileResult" type="s:base64Binary"/>
    </s:sequence>
    </s:complexType>
</s:element>

With the generated code from wsdl2objc开发者_运维问答 I get an error with guard malloc enabled:

GuardMalloc[eBridge-1115]: guard malloc zone failure: freeing a pointer we didn't allocate that was not claimed by any registered zone

GuardMalloc[eBridge-1115]: Explicitly trapping into debugger!!!

This is the last obj-c code i can see before it goes all asm on me:

@implementation WebServices_GetFileResponse
- (void)dealloc
{
    [soapSigner release];
    //breaks on the line below
    if(GetFileResult != nil) [GetFileResult release];

    [super dealloc];
}

I believe it is breaking in the generated Response object's deserializeElementsFromNode but have not pinpointed it yet. This is not a "Debug my program for me" question. My question is simply - Has anyone ran into this problem with a base64Binary byte array return type generated by wsdl2objc?

Update

The problem I believe lies in

+ (id)dateWithBase64EncodedString;

in NSData (MBBase64) -

char *data = malloc(...);
NSUInteger length = 0;

... // fill data[length++];

realloc(data, length);
return [NSData dataWithBytesNoCopy:bytes length:length]; //offending line?

Im making an assumption that this does not make the objective-c runtime claim the memory.. so when I am releasing the NSData it is somehow still allocated with 'malloc'. Does anyone know better than I do?

In + (id)dateWithBase64EncodedString I changed the last line to:

return [NSData dataWithBytesNoCopy:bytes length:length **freeWhenDone:NO**];

and it seemed to work. This is just my hack, but if you are the author of wsdl2objc sees this hopefully it will help.