Der Stephen and Nick,
I solved the problem in this way.
- (void) Send
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
char *message = [self createSendMessage];
[self send:message];
[pool drain];
}
It also works. How do you think about the solution?
Best,
Bing
On Sun, Jun 12, 2011 at 1:45 PM, Stephen J. Butler <[email protected]
> wrote:
> On Sat, Jun 11, 2011 at 1:03 PM, Bing Li <[email protected]> wrote:
> > NSData *data = [xmlDoc XMLData];
> > NSString *xmlStr = [[[NSString alloc] initWithData:data
> > encoding:NSUTF8StringEncoding] autorelease];
> > xmlStr = [xmlStr stringByAppendingString:@"\n"];
> > const char *xmlChar = [xmlStr UTF8String];
> >
> > [xmlDoc release];
> > return xmlChar;
> > }
>
> If you're using your own autorelease pools now, be careful about the
> lifetime of your return value (xmlChar)! It will only live as long as
> xmlStr lives. For example, this would be incorrect:
>
> NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
> const char *str = [self createSendMessage:...];
> [pool release];
> // do something with str
>
> You'll want to strdup() the return value to make sure it lives after
> the pool is released, but then you also need to remember to free()
> your strdup() value.
>
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