lldb

I'm running into some malloc-related issues in my code: malloc: *** error for object 0x103401e28: incorrect checksum for freed object - object was probably modified after being freed. *** set a breakpoint in malloc_error_break to debug I've tried things like: (lldb) breakpoint set malloc_error_break error: invalid combination of options for the given command How do I set this breakpoint using the terminal? I've searched online and only found results involving Xcode. If you are familiar with gdb, then this little cheat-sheet might help: http://lldb.llvm.org/lldb-gdb.html Also: (lldb) help break

I'm running Xubuntu 16.04. After installing lldb from the repositories, I get the following output when I try to use it: lldb foo (lldb) target create "foo" Current executable set to 'foo' (x86_64). (lldb) r error: process launch failed: unable to locate lldb-server Any ideas what I'm missing? After an hour or so of fiddling around, I found the solution. I copied /usr/bin/lldb-server-3.8 and named it /usr/bin/lldb-server . This is probably a problem with the ubuntu package. I recommend setting an alternative rather than copying. On Ubuntu, you can do this with: sudo update-alternatives -

In the scheme run debugger popup, all it shows is 'None' and 'GDB'. This is for an iPad 4.2 simulator built with LLVM. Jano You can't. In words of an Apple employee, LLDB is not available for iOS development yet . As of july 2011 it is unknown when LLDB will become available for iOS. In Xcode 4.0.2 your only option is GDB. In Xcode 4.2 you have LLDB as an option, but you can't use it: The LLDB project doesn't list a date for iOS support. The FAQ says: Q: What targets does LLDB currently support? Mac OS X native debugging for i386 and x86_64 targets. And the WWDC 2011 sessions that talk about

I'm trying to debug an iOS app and I'm having problems with lldb in the simulator. Calling class methods doesn't seem to work. Instance methods work fine. (lldb) po Category <no result> (lldb) po [Category class] error: Couldn't prepare the expression for execution in the target (lldb) po self (TagsTableViewController *) $5 = 0x085585a0 <TagsTableViewController: 0x85585a0> I've tried the 4.3 and 5.1 simulators but both exhibit the same issues. Everything works fine when debugging on a device. This works. Thanks to @devioustree who answered in a comment above. Basic command is structured like

At some point during my work, XCode's po and p commands stopped working. No matter what I enter, it doesn't generate output: (gdb) po self (gdb) po [self name] (gdb) po [UITableView class] (gdb) po @"Hello" (gdb) p indexPath.row (gdb) print indexPath.row (gdb) po fjkldsjflksdjklwjfkljfkldsjflk (gdb) When I enter any of these commands, the command line just goes to the next line, where it prints the blue (gdb) , but no output. I tried the following steps: Restart XCode, restart my Macbook Tried while debugging in the simulator as well as on a iOS device Switched to LLDB and restarted Re

Example. I write the following string in my old project and a new, clear one: UIInterfaceOrientation k = [UIApplication sharedApplication].statusBarOrientation; Console input-output for a clear project: (lldb) po k UIInterfaceOrientationLandscapeLeft And something awful in my old project if I write "po k" - a list of useless integers. Additionally I can't print most of objects in the new project. I don't know what is going on in your case, but just so folks are clear on the difference between po & p : The p command (a.k.a. expr -- ) takes the arguments it is given, compiles them as though they