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[cppinterop] Upgrade to latest for cppyy migration#22728

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aaronj0:cppinterop-upgrade
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[cppinterop] Upgrade to latest for cppyy migration#22728
aaronj0 wants to merge 4 commits into
root-project:masterfrom
aaronj0:cppinterop-upgrade

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@aaronj0

@aaronj0 aaronj0 commented Jun 29, 2026

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Test and land the latest upgrade, required to rebase the cppyy migration PR on top

@aaronj0 aaronj0 requested a review from guitargeek June 29, 2026 12:18
@aaronj0 aaronj0 self-assigned this Jun 29, 2026
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github-actions Bot commented Jun 29, 2026

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Test Results

    19 files      19 suites   2d 17h 36m 25s ⏱️
 3 868 tests  3 868 ✅ 0 💤 0 ❌
63 705 runs  63 705 ✅ 0 💤 0 ❌

Results for commit 11a13bb.

♻️ This comment has been updated with latest results.

@vgvassilev

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@aaronj0, I believe we need to also move Box.h to ROOTSYS/etc

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aaronj0 commented Jun 29, 2026

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@aaronj0, I believe we need to also move Box.h to ROOTSYS/etc

Yes, I have that obvious change and more patches in the pipeline.. (adapting to the new types, etc)
Will push all at once, when my local build is green

@aaronj0

aaronj0 commented Jul 3, 2026

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I believe this upgrade now passes the CI, the windows x64 failures are visible on master. I will upstream the required patches and bump this upgrade to the latest commit. cc @guitargeek

@aaronj0 aaronj0 force-pushed the cppinterop-upgrade branch from 4dbc826 to a0a483b Compare July 3, 2026 12:22
@aaronj0 aaronj0 added the clean build Ask CI to do non-incremental build on PR label Jul 3, 2026
Comment thread interpreter/CppInterOp/unittests/CppInterOp/VTableOverlayTest.cpp

@guitargeek guitargeek left a comment

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LGTM! Thanks for the update. Unfortunately we don't have green builds on Windows, but that problem is also present in the nightlies.

@aaronj0 aaronj0 force-pushed the cppinterop-upgrade branch 3 times, most recently from 83e29a3 to 523fd79 Compare July 8, 2026 06:01
aaronj0 added 4 commits July 9, 2026 14:51
The latest CppInterOp upgrade introduces opaque-handle structs Cpp::ObjectRef, Cpp::DeclRef, and Cpp::InterpRef (CppInterOpTypes.h) to replace void*/typedef pointer arguments.
The latest CppInterOp upgrade changes UseExternalInterpreter to also
install a CppInteropDiagConsumer onto Cling's DiagnosticsEngine.
Rootcling later wraps the current diag client with CheckModuleBuildClient
via DiagnosticsEngine::setClient which deletes CppInterOp's previously-owned
client. This leads to CheckModuleBuildClient holding a dangling fChild pointer.

Without this patch, cling::Interpreter::ShutDown crashes. Since rootcling does
not use CppInterOp, we can avoid registering the interpreter with CppInterOp if
we are running in rootcling.
@aaronj0 aaronj0 force-pushed the cppinterop-upgrade branch from 523fd79 to 11a13bb Compare July 9, 2026 12:54
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3 participants