I just added a section to ./docs/DebuggingTheCompiler.rst on how to get enable
logging from LLDB.
Can you enable the logging there and add file an SR?
Michael
> On Oct 7, 2017, at 11:27 AM, Edward Connell <ewconn...@gmail.com> wrote:
>
> Hi Michael,
> No I am not evaluating an expression or anything. This all worked fine in
> past builds.
>
> I simply set a breakpoint in a function and after stopping while gathering
> values for the debugger view, it crashes.
>
> It doesn't crash in all functions, but it does crash when trying to stop in
> many different functions.
> An example function signature where it crashes is (DataView is a concrete
> struct):
>
> public func setupForward(mode: EvaluationMode, inData: DataView, labels:
> DataView?,
> outData: inout DataView, backData:
> inout DataView?) throws { ... }
>
> Before calling the function, all of the parameters have valid values that I
> can examine. But as soon as I step into this function, LLDB crashes with that
> message. It behaves the same way with other functions that have different
> signatures.
>
> I tried to create a very simple repro case using this signature, but it
> didn't crash. My project is on GitHub and this can be easily reproduced. The
> only pain is installing my project on your test machine.
>
> Ubuntu 16.04
> Swift 4.0 release
> NVidia gpu
> Netlib https://github.com/ewconnell/Netlib/wiki#installation
> <https://github.com/ewconnell/Netlib/wiki#installation>
> CLion IDE with Swift plugin
>
> 1) do a debug build
> 2) set a breakpoint at CudaSoftmax.swift:44 or any line in the function
> 3) run
> 4) when it stops LLDBFrontend crashes
>
> LLDBFrontend:
> /home/buildnode/jenkins/workspace/oss-swift-4.0-package-linux-ubuntu-16_04/swift/lib/SILOptimizer/Mandatory/AccessEnforcementSelection.cpp:613:
> (anonymous namespace)::SourceAccess (anonymous
> namespace)::AccessEnforcementSelection::getSourceAccess(swift::SILValue):
> Assertion `isa<AllocStackInst>(address) || isa<SILUndef>(address)' failed.
> Stack dump:
> 0. While running pass #10 SILModuleTransform ""Access Enforcement
> Selection"".
>
>
> Using the LLDB CLI I am able to stop there. If I try "fr var -O" with
> mode, inData, and labels, it prints their values no problem
> outData and backData gives me a segmentation violation
> The visible difference is the "inout"
>
> Not sure what the problem is. It worked fine in the past.
>
> If you can think of an experiment I can try to create a simple repro case,
> please let me know.
>
> Thanks, Ed
>
> On Fri, Oct 6, 2017 at 4:34 PM, Michael Gottesman <mgottes...@apple.com
> <mailto:mgottes...@apple.com>> wrote:
> It looks like this is failing during guaranteed optimization. Are you running
> an expression in the debugger and we are crashing there?
>
> Michael
>
>> On Oct 6, 2017, at 11:53 AM, Edward Connell via swift-users
>> <swift-users@swift.org <mailto:swift-users@swift.org>> wrote:
>>
>> While trying to debug a Netlib function, LLDB is crashing
>>
>> I'm not sure what this assert means.
>>
>> LLDBFrontend:
>> /home/buildnode/jenkins/workspace/oss-swift-4.0-package-linux-ubuntu-16_04/swift/lib/SILOptimizer/Mandatory/AccessEnforcementSelection.cpp:613:
>> (anonymous namespace)::SourceAccess (anonymous
>> namespace)::AccessEnforcementSelection::getSourceAccess(swift::SILValue):
>> Assertion `isa<AllocStackInst>(address) || isa<SILUndef>(address)' failed.
>> Stack dump:
>> 0. While running pass #10 SILModuleTransform ""Access Enforcement
>> Selection"".
>>
>> It fails every time and the same way in several functions, but not all
>> functions.
>> I tried to create a simple repro with the same function signature, but I
>> can't get the simple case to fail.
>> A debug build isn't doing whole-module-optimization, so that's not it
>>
>> Ideas anyone?
>>
>> Who owns the LLDBFrontend?
>>
>> Thanks, Ed
>> _______________________________________________
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>> swift-users@swift.org <mailto:swift-users@swift.org>
>> https://lists.swift.org/mailman/listinfo/swift-users
>> <https://lists.swift.org/mailman/listinfo/swift-users>
>
>
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