Xcode is stopping at auto-continue breakpoints

When I set a breakopint in my project, and click the "continue after evaluating all actions" c开发者_如何学编程heckbox, Xcode does not continue. Not only that, execution frequently appears to hang. This is true regardless of whether or not I actually have any actions on the breakpoint.

My non-autocontinue breakpoints work fine.

I tried a brand new project and the problem still occurred. So it must be related to a setting in either my computer or Xcode. I am using Snow Leopard and Xcode 4.0.2.

What could be the matter?

EDIT: code and console log.

code:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    [self.window makeKeyAndVisible];
    int x = 5;
    printf("%d", x);   // breakpoint here with autocontinue checked and no action
    x+=2;
    printf("%d", x);
    return YES;
}

console log:

This GDB was configured as "x86_64-apple-darwin".sharedlibrary apply-load-rules all
Attaching to process 87901.
Pending breakpoint 1 - ""AutocontinueTestAppDelegate.m":21" resolved
Current language:  auto; currently objective-c
57

It is interesting that even though the optimization was set to none, both printf statements fired.

If you are running your app on device, I just got this for you: Currently, auto-continue breakpoints only work on simulator, no on devices.

Source: some Apple engineer.

From what you describe, it sounds like it might be a bug in Xcode - report it here.

(Sorry my answer is not more helpful)

Can you paste your console log. Check that your 'Condition' and 'Action' are valid and without error. I just tested this with an action of resetAllAppData == NO but the breakpoint did not halt execution because the 'Action' needs to be 'resetAllAppData == false'.

This is the console log of another test:

Attaching to process 23361.
warning: Error parsing breakpoint condition expression
Pending breakpoint 1 - ""iPhoneAppDelegate.m":50" resolved

I got this error because I set the "Action" of the breakpoint to be the "Debugger Command" po resetAllAppData and since resetAllAppData is not an Object typedef signed char BOOL; it cannot execute the action and subsequently does not stop at the breakpoint.

This was happening to me, too. I noticed that at a given breakpoint it would only stop occasionally. The breakpoint was logging a BOOL to console using po. Inspecting it I noticed that it would stop whenever that BOOL was 1 it would stop and append to the log [no Objective-C description available]. Changing it to something that prevented that no-description-available "bug" resulted in auto continuation.

So now I'm using something like:

po (NSString *)[NSString stringWithFormat:@"%d", isCenterActive]

There might be a better and shorter solution, though.