[Interest] LLDB hangs while being launched on Mac OS X

[André Pönitz]

On Sun, Sep 28, 2014 at 06:30:46AM +0400, Dmitrii Volosnykh wrote:
> Hi,
> 
> I am unable to debug C++ code using LLDB on Mac OS X (10.9.5). Xcode 6.0.1
> Command Line Tools are installed. I use latest Qt 5.3.2 release with the
> corresponding QtCreator 3.2.1. The compiler in the toolchain is:
> 
> $ clang --version
> Apple LLVM version 6.0 (clang-600.0.51) (based on LLVM 3.5svn)
> 
> $ lldb --version
> lldb-320.4.124.10
> 
> I build 64bit code. Debugging C++ is enabled in the Run configuration.
> It just hangs at about 2/5 of the overall length of progress bar.
> 
> Can't figure out what I am missing. Yes, I've cloned default kit and set
> the debugger to LLDB.
> 
> Any info on how to make debugging possible is highly appreciated.

The LLDB threading startup requirements have changed, causing the
previously used command sequence to hang. The issue has been addressed
in both Qt Creator 3.2 and master branch.

The patch touches one file with python code, you could apply it
locally without waiting for the next release. The relevant part is:

--- a/share/qtcreator/debugger/lldbbridge.py
+++ b/share/qtcreator/debugger/lldbbridge.py
@@ -667,8 +667,9 @@ class Dumper(DumperBase):
     def runEngine(self, _):
+        self.prepare()
         s = threading.Thread(target=self.loop, args=[])
         s.start()
 
-    def loop(self):
+    def prepare(self):
         error = lldb.SBError()
         listener = self.debugger.GetListener()
 
@@ -710,5 +711,7 @@ class Dumper(DumperBase):
             self.report('pid="%s"' % self.process.GetProcessID())
             self.reportState("enginerunandinferiorrunok")
 
+    def loop(self):
         event = lldb.SBEvent()
+        listener = self.debugger.GetListener()
         while True:

Andre'