[swift-lldb-dev] Cannot use swift REPL from stand alone lldb build
Rex Fenley
rex at remind101.com
Fri Oct 7 16:43:50 CDT 2016
Thanks Enrico! Is there a download at swift.org that has the patch
available or do I have to manually apply it to the source? And what about "SDK
Path: error: unable to locate SDK No devices are available." errors when I
simply try to run the lldb from the toolchain downloaded from swift.org? I
followed all the directions in https://swift.org/download/#using-downloads
Also, if I have to do this from source vs download, I tried to instead
build the toolchain from source and I was guessing that
swift/utils/build-toolchain would do it but it seems to fail with
Couldn't find llbuild source directory.
./utils/build-script: fatal error: command terminated with a non-zero exit
status 1, aborting
almost immediately... Am I going down the right path?
Thanks!
On Fri, Oct 7, 2016 at 1:47 PM, Enrico Granata <egranata at apple.com> wrote:
> While I haven't done any diagnosing on your actual issue, I believe that
> this is a known issue, and the requisite fix is already available - even if
> only not the llvm.org side, as:
>
> ------------------------------------------------------------------------
> r278166 | enrico | 2016-08-09 14:16:58 -0700 (Tue, 09 Aug 2016) | 5 lines
>
> Adjust LLDB's iOS simulator interface for changes in CoreSimulator
>
> rdar://27732333 and rdar://27732377
>
> If applying that patch doesn't help, let me know
>
> On Oct 7, 2016, at 11:57 AM, Rex Fenley via swift-lldb-dev <
> swift-lldb-dev at swift.org> wrote:
>
> Hey Jim!
>
> I downloaded the toolchain from the swift website, attached the toolchain
> to Xcode 8, rebuilt the app, ran the lldb included in the toolchain, but
> then got stuck trying to select the correct platform and simulator
>
> $ /Library/Developer/Toolchains/swift-3.0-RELEASE.xctoolchain/usr/bin/lldb
>
> (lldb) platform select ios-simulator
>
> Platform: ios-simulator
>
> Triple: x86_64h-apple-macosx
>
> OS Version: 10.11.6 (15G1004)
>
> Kernel: Darwin Kernel Version 15.6.0: Mon Aug 29 20:21:34 PDT 2016;
> root:xnu-3248.60.11~1/RELEASE_X86_64
>
> Hostname: 127.0.0.1
>
> WorkingDir: /Users/Rex/Documents/projects/swift-lldb
>
> SDK Path: error: unable to locate SDK
>
> No devices are available.
>
>
> On Fri, Oct 7, 2016 at 11:30 AM, Rex Fenley <rex at remind101.com> wrote:
>
>> We're using the `swift-3.0-RELEASE` tag from the swift-lldb github repo
>> to build lldb and we are building our app with Xcode 8. Are these not the
>> same swift versions?
>>
>> On Fri, Oct 7, 2016 at 10:48 AM, Jim Ingham <jingham at apple.com> wrote:
>>
>>> This error usually comes from some Swift component in you app not being
>>> built with exactly the same Swift compiler as the one that the lldb you are
>>> using is built with. For instance, if you are building your own lldb, you
>>> have to use the Swift compiler that's built in the process of building lldb.
>>>
>>> If that's not the case we'll need to look at the logs generated by
>>> putting:
>>>
>>> log enable -f /tmp/lldb-log.txt lldb expr types
>>>
>>> in your ~/.lldbinit and then running your debug session. These logs can
>>> get pretty big so it's better to file a bug and attach these logs to the
>>> bug. Note, the logs get overwritten every time you start a debug session,
>>> so when you get the failure, grab the logs and add them to the bug you file.
>>>
>>> Thanks,
>>>
>>> Jim
>>>
>>> > On Oct 6, 2016, at 9:18 PM, Todd Fiala via swift-lldb-dev <
>>> swift-lldb-dev at swift.org> wrote:
>>> >
>>> > Hi Rex,
>>> >
>>> >
>>> >
>>> > On Thu, Oct 6, 2016 at 5:22 PM, Rex Fenley via swift-lldb-dev <
>>> swift-lldb-dev at swift.org> wrote:
>>> > Hi!
>>> >
>>> > I run lldb, platform select ios-simulator, connect to the right
>>> simulator and attach to my app and when trying to try to do anything in the
>>> repl I get the following kind of error at the bottom for an Abort, please
>>> help! The repl works fine in Xcode, not sure why it wouldn't work in this
>>> case.
>>> >
>>> > (lldb) process attach -n <App Name> --waitfor
>>> >
>>> > Process 27857 stopped
>>> >
>>> > * thread #1: tid = 0x1eadf9, 0x00007fff6d4ca5e2 dyld`pread + 10, stop
>>> reason = signal SIGSTOP
>>> >
>>> > frame #0: 0x00007fff6d4ca5e2 dyld`pread + 10
>>> >
>>> > dyld`pread:
>>> >
>>> > -> 0x7fff6d4ca5e2 <+10>: jae 0x7fff6d4ca5ec ; <+20>
>>> >
>>> > 0x7fff6d4ca5e4 <+12>: movq %rax, %rdi
>>> >
>>> > 0x7fff6d4ca5e7 <+15>: jmp 0x7fff6d4c9c01 ; cerror
>>> >
>>> > 0x7fff6d4ca5ec <+20>: retq
>>> >
>>> >
>>> >
>>> > Executable module set to "/Users/Rex/Library/Developer/
>>> CoreSimulator/Devices/ACC5BC4E-C7B1-4635-A591-6BE65F05B7EC/d
>>> ata/Containers/Bundle/Application/ECA295A8-DB79-4A4A-8ADE-0E616CAB0093/<App
>>> Name>.app/<App Name>".
>>> >
>>> > Architecture set to: x86_64h-apple-ios.
>>> >
>>> > (lldb) continue
>>> >
>>> > Process 27857 resuming
>>> >
>>> > (lldb) process interrupt
>>> >
>>> > Process 27857 stopped
>>> >
>>> > * thread #1: tid = 0x1eadf9, 0x0000000115929f72
>>> libsystem_kernel.dylib`mach_msg_trap + 10, stop reason = signal SIGSTOP
>>> >
>>> > frame #0: 0x0000000115929f72 libsystem_kernel.dylib`mach_msg_trap
>>> + 10
>>> >
>>> > libsystem_kernel.dylib`mach_msg_trap:
>>> >
>>> > -> 0x115929f72 <+10>: retq
>>> >
>>> > 0x115929f73 <+11>: nop
>>> >
>>> >
>>> >
>>> > libsystem_kernel.dylib`mach_msg_overwrite_trap:
>>> >
>>> > 0x115929f74 <+0>: movq %rcx, %r10
>>> >
>>> > 0x115929f77 <+3>: movl $0x1000020, %eax ; imm =
>>> 0x1000020
>>> >
>>> > (lldb) repl
>>> >
>>> > 1> import Foundation
>>> >
>>> > warning: Swift error in module <App Name>.
>>> >
>>> > Debug info from this module will be unavailable in the debugger.
>>> >
>>> >
>>> >
>>> >
>>> > This part looks suspicious. I'm assuming <App Name> is really
>>> something else on your end. If you do have a space in the name, you might
>>> want to try without a space as something in the toolchain might be
>>> mishandling spaces in pathnames.
>>> >
>>> >
>>> > Assertion failed: (!HasFatalErrors()), function
>>> GetNumModuleSearchPaths, file /Users/Rex/Documents/projects/
>>> swift-lldb/lldb/source/Symbol/SwiftASTContext.cpp, line 3587.
>>> >
>>> > Abort trap: 6
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > This bit above definitely means something is wrong. I suspect it's a
>>> cascading error for the debugger not being able to find debug info.
>>> >
>>> > There are a couple members of the team that will likely have some
>>> thoughts on what to try. I'll make sure they see this tomorrow.
>>> >
>>> > Thanks for passing that along,
>>> > Todd
>>> >
>>> > --
>>> > Rex Fenley | IOS DEVELOPER
>>> >
>>> >
>>> > Remind.com | BLOG | FOLLOW US | LIKE US
>>> >
>>> > _______________________________________________
>>> > swift-lldb-dev mailing list
>>> > swift-lldb-dev at swift.org
>>> > https://lists.swift.org/mailman/listinfo/swift-lldb-dev
>>> >
>>> >
>>> >
>>> >
>>> > --
>>> > -Todd
>>> > _______________________________________________
>>> > swift-lldb-dev mailing list
>>> > swift-lldb-dev at swift.org
>>> > https://lists.swift.org/mailman/listinfo/swift-lldb-dev
>>>
>>>
>>
>>
>> --
>> Rex Fenley | IOS DEVELOPER
>>
>> Remind.com <https://www.remind.com/> | BLOG <http://blog.remind.com/>
>> | FOLLOW US <https://twitter.com/remindhq> | LIKE US
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>>
>
>
>
> --
> Rex Fenley | IOS DEVELOPER
>
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>
>
>
> Thanks,
> *- Enrico*
> 📩 egranata@.com ☎️ 27683
>
>
--
Rex Fenley | IOS DEVELOPER
Remind.com <https://www.remind.com/> | BLOG <http://blog.remind.com/>
| FOLLOW
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