> On Mar 9, 2016, at 5:40 PM, Jeffrey Tan <jeffrey.fu...@gmail.com> wrote:
> 
> Hi Greg, I am using the lldb(/usr/bin/lldb) installed by Xcode not self-built 
> one. For example, I can use lldb to attach to chrome without any problem. And 
> I can see the debugserver it uses is from 
> "/Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Versions/A/Resources/debugserver".
>  Do I still need to sign it?

No, this one is code signed with an Apple certificate which is trusted by the 
system.

> Only the app launched from Xcode IDE can't be attached from this lldb.

Try using "xcrun lldb" instead of /usr/bin/lldb.

> 
> On Wed, Mar 9, 2016 at 3:08 PM, Greg Clayton <gclay...@apple.com> wrote:
> Did you follow the instructions and you have made your "lldb_codesign" code 
> signing certificate?:
> 
> svn cat http://llvm.org/svn/llvm-project/lldb/trunk/docs/code-signing.txt
> 
> If you don't do this, your debugserver won't have the ability to debug 
> anything. If you don't want to do this, you can remove the "debugserver" 
> binary from your LLDB.framework that you built and are running with, and then 
> we will fall back to using the one that is installed inside 
> /Applications/Xcode.app as that one is Apple code signed.
> 
> Greg
> 
> > On Mar 9, 2016, at 3:04 PM, Jeffrey Tan via lldb-dev 
> > <lldb-dev@lists.llvm.org> wrote:
> >
> > Hi,
> >
> > My colleague is trying to use our lldb IDE attaching to app run/build from 
> > Xcode which failed. I can reproduce this with lldb console:
> >
> > jeffreytan-mbp:$ ps aux | grep iOSApp
> > jeffreytan      61816   0.0  0.0  2432772    676 s002  S+    3:00PM   
> > 0:00.00 grep iOSApp
> > jeffreytan      61806   0.0  0.2  2721120  38600   ??  SXs   3:00PM   
> > 0:00.24 
> > /Users/jeffreytan/Library/Developer/CoreSimulator/Devices/EF17E202-3981-4DB0-87C9-2A9345C1E713/data/Containers/Bundle/Application/CAEBA7D7-D284-4489-8A53-A88E56F9BB04/iOSAppTest.app/iOSAppTest
> > jeffreytan-mbp:$ lldb -p 61806
> > (lldb) process attach --pid 61806
> > error: attach failed: attach failed: unable to attach
> >
> > My theory is:
> > 1. Xcode does not have the concept of run without debugger and run under 
> > debugger, so it always run app with debugger enabled.(Is this true?)
> > 2. And you can't have two native debuggers debugging the same process on 
> > Mac(this is true on Windows, is it true for Mac or Linux?)
> >
> > If both are true, can we report meaningful message like "inferior is 
> > already being debugged" or something similar instead of the generic error 
> > message like "attach failed: unable to attach"?
> >
> > Btw: I found I can still use gdb to attach to the process(with a permission 
> > elevation dialog pop-up) and see the callstack. How does gdb do that?
> >
> > Jeffrey
> > _______________________________________________
> > lldb-dev mailing list
> > lldb-dev@lists.llvm.org
> > http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
> 
> 

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