[2.1.52] Undefined value encountered during compilation. This is typically caused by invalid dex input that uses a register that is not defined on all control-flow paths leading to the use [161154276]

Fixed

Bug

Status Update

No update yet.

Description

br...@snapchat.com

created issue #1

Jul 13, 2020 09:42PM

I'm receiving the following error on R8 2.1.52. I've captured a dump and can share it over google drive.

Stacktrace:

        Caused by: com.android.tools.r8.utils.ExceptionUtils$OriginAttachmentException: com.android.tools.r8.errors.CompilationError: Undefined value encountered during compilation. This is typically caused by invalid dex input that uses a register that is not defined on all control-flow paths leading to the use.
                at com.android.tools.r8.utils.ExceptionUtils$OriginAttachmentException.wrap(ExceptionUtils.java:232)
                at com.android.tools.r8.utils.ExceptionUtils.withOriginAndPositionAttachmentHandler(ExceptionUtils.java:222)
                at com.android.tools.r8.ir.conversion.IRConverter.rewriteCode(IRConverter.java:1131)
                at com.android.tools.r8.ir.conversion.IRConverter.processMethod(IRConverter.java:1110)
                at com.android.tools.r8.ir.conversion.IRConverter.lambda$optimize$7(IRConverter.java:725)
                at com.android.tools.r8.ir.conversion.PrimaryMethodProcessor.lambda$forEachMethod$1(PrimaryMethodProcessor.java:137)
                at com.android.tools.r8.utils.ThreadUtils.lambda$processItemsWithResults$2(ThreadUtils.java:51)
                at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424)
                at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
                at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
                at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
                at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
        [CIRCULAR REFERENCE:com.android.tools.r8.errors.CompilationError: Undefined value encountered during compilation. This is typically caused by invalid dex input that uses a register that is not defined on all control-flow paths leading to the use.]

Comments

ag...@google.com <ag...@google.com> #2Jul 14, 2020 05:09AM

Reassigned to ag...@google.com.

Thanks for the report. Most of the team is on vacation for the next couple of weeks. Therefore, there will likely be a delay in getting to these.

ag...@google.com <ag...@google.com> #3Jul 14, 2020 06:37AM

If you could share the reproduction with ager@google.com and zerny@google.com we will have a look as soon as we can.

sg...@google.com <sg...@google.com> Aug 2, 2020 08:20PM

Reassigned to ze...@google.com.

ap...@google.com <ap...@google.com> #4Aug 6, 2020 12:06PM

Project: r8
Branch: master

commit 1828216bb849356025c6da86cc42d4af28436103
Author: Ian Zerny <zerny@google.com>
Date: Thu Aug 06 13:59:00 2020

Handle no-exceptions case when inlining synchronized methods.

Bug: 161154276
Bug: 163007704
Change-Id: I94b67bcf7a0363f717fbd78079706f5894167c8f

M src/main/java/com/android/tools/r8/ir/optimize/Inliner.java
A src/test/java/com/android/tools/r8/ir/optimize/inliner/InlineSynchronizedMethodTest.java

https://r8-review.googlesource.com/52747

sg...@google.com <sg...@google.com> Aug 6, 2020 01:52PM

Marked as fixed.

ap...@google.com <ap...@google.com> #5Aug 6, 2020 02:38PM

Project: r8
Branch: 2.1

commit 63c85347ce0e314d44c8688286e051a6cf55674c
Author: Ian Zerny <zerny@google.com>
Date: Thu Aug 06 16:37:19 2020

Version: 2.1.60

Cherry-pick: Handle no-exceptions case when inlining synchronized methods.
CL:

https://r8-review.googlesource.com/c/r8/+/52747
Bug: 161154276
Change-Id: I13e5d0b7566f2fa514be6a78056f849126b459d6

M src/main/java/com/android/tools/r8/Version.java
M src/main/java/com/android/tools/r8/ir/optimize/Inliner.java
A src/test/java/com/android/tools/r8/ir/optimize/inliner/InlineSynchronizedMethodTest.java

https://r8-review.googlesource.com/52750

Issue 161154276