OpenModelica newInst-newBackend from 2026-04-14 05:34:51 to 2026-04-15 17:06:13

Summary

OMC Commits	11
Libraries Changed	1
Number of Improvements	58
Number of Regressions	3
Number of Performance Improvements	1
Number of Performance Regressions	0

OpenModelica Changes

Commit	Date	Author	Summary
56cecf28d0	2026-04-15 15:41:15 +0200	phannebohm	Manually serialize QJsonValue if qt < 6.9 (#15334)
3662079c93	2026-04-15 13:05:50 +0200	Andreas	Fix -Wpointer-sign warning (#15335)
35d58c82fe	2026-04-15 12:18:09 +0200	Per Östlund	Update warning for ==/<> on Real outside functions (#15332)
0bfc7ce35f	2026-04-15 11:23:17 +0200	kabdelhak	[NB] update function differentiation (#15333)
5e3e8824cf	2026-04-14 17:42:14 +0200	Per Östlund	Document dumpFlatModel for translateResidualsDAE (#15328)
a3db347217	2026-04-14 16:53:27 +0200	Adeel Asghar	Allow messages dock window to take more space (#15326)
1face1afee	2026-04-14 16:32:11 +0200	Martin Sjölund	Add a Model Context Protocol (MCP) server to OMEdit
a5d5985248	2026-04-14 15:05:24 +0200	Per Östlund	Add __OpenModelica_Impure where needed (#15323)
74b6b7e247	2026-04-14 14:39:40 +0200	Per Östlund	Handle Code variables in InstDAE.daeDeclare (#15322)
aa4bdaf579	2026-04-14 13:53:50 +0200	Per Östlund	Improve documentation of add/delete/updateEquation (#15320)
1d3a2f9170	2026-04-14 11:13:28 +0200	Per Östlund	Remove empty array variables in Base Modelica (#15317)

3rdParty changes

Note that the 3rdParty libraries changed: 20924d599879..a5205221927e

OpenModelicaLibraryTesting Changes

Commit	Date	Author	Summary
e83c3f4	2026-04-14 08:15:53 +0200	Adrian Pop	cannot run python -m fmpy via check_output_log (#284)
2915413	2026-04-09 17:46:10 +0200	Adrian Pop	update the way we get the version for FMPy (#283)

Library Changes

Library	Change
Buildings_12	From version 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/e99e042c0dd0d7cfd19425fe260eb1501486b194.zip) to 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/8712ec76c4bbc553c2c57fb15e719b11505977bd.zip)

Models Affected

AixLib	AixLib.Fluid.MixingVolumes.Validation.CoupledVolumesGlycol47 (sim)	Templates → Compile
BuildSysPro	BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesGlycol47 (sim)	Templates → Compile
BuildSysPro	BuildSysPro.IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomOneElement (sim)	FrontEnd → Failed
BuildSysPro	BuildSysPro.IBPSA.ThermalZones.ReducedOrder.Validation.RoomSteadyState (sim)	Failed → FrontEnd
BuildingSystems	BuildingSystems.Fluid.MixingVolumes.Validation.CoupledVolumesGlycol47 (sim)	Templates → Compile
Buildings_11	Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesGlycol47 (sim)	Templates → Compile
Buildings_12	Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Length (sim)	Simulate → Verify
Buildings_12	Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesGlycol47 (sim)	Templates → Compile
Buildings_latest	Buildings.Fluid.Geothermal.ZonedBorefields.Validation.FEFLOW.InletTemperaturePulse (sim)
Buildings_latest	Buildings.Fluid.Geothermal.ZonedBorefields.Validation.FEFLOW.MassFlowRatePulse50 (sim)
Buildings_latest	Buildings.Fluid.Geothermal.ZonedBorefields.Validation.FEFLOW.MassFlowRateStep100 (sim)
Buildings_latest	Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesGlycol47 (sim)	Templates → Compile
Chemical	Chemical.Obsolete.Examples.HydrogenCombustion (sim)	Templates → Compile
Chemical_master	Chemical.Obsolete.Examples.HydrogenCombustion (sim)	Templates → Compile
IBPSA_latest	IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesGlycol47 (sim)	Templates → Compile
ModelicaTestOverdetermined	ModelicaTestOverdetermined.ConsistentInitialization.Fluid.TwoVolumesFullSteadyStatePressureAndTemperature (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Fluid.TestComponents.Fittings.TestJunctionVolume (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Air.DryAirNasa (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Air.MoistAir (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.Air (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.Nitrogen (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Incompressible.Essotherm650 (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Incompressible.Glycol47 (sim)	Templates → Compile
ModelicaTest_3.2.3	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.Fluid.TestComponents.Fittings.TestJunctionVolume (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Air.DryAirNasa (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Air.MoistAir (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.Air (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.Nitrogen (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam (sim)	Templates → Compile
ModelicaTest_4.0.0	ModelicaTest.MultiBody.InitializationConversion.Bodies (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.InitializationConversion.Joints (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.InitializationConversion.Rotor1D (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.CheckConstaintTorqueUniversalJoint (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.FreeMotion (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.FreeMotion2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.FreeMotionScalarInit (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.FreeMotionScalarInit2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.FreeMotionScalarInit3 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.FreeMotionScalarInit4 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.FreeMotionScalarInit5 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.GearConstraint (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.JointUPS2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.JointUSP2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.Revolute2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.Spherical (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.SphericalSpherical2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Joints.UniversalSpherical (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.BodyShape (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.FixedRotation (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.FixedTranslation (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.FlyingBodies (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.FreeBodies (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.FreeBodies2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.FreeBodiesEnforceStatesFalse (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.PointMass (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.Rotor1D.Bevel1D (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.Rotor1D.GearConstraint (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.Rotor1D.GearConstraint2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.Rotor1D.GearConstraint3 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.Rotor1D.Rotor1D_1 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.Rotor1D.Rotor1D_2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Parts.Rotor1D.Rotor1D_3 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.AbsoluteSensor (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.AbsoluteSensor2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutForce (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutForce2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutForce3 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutForceAndTorque1 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutForceAndTorque2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutForceAndTorque3 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutTorque (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutTorque2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.CutTorque3 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.Distance (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.Distance2 (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Sensors.RelativeSensor (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Visualizers.Planes (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Visualizers.Torus (sim)
ModelicaTest_4.0.0	ModelicaTest.MultiBody.Visualizers.VoluminousWheel (sim)
ModelicaTest_4.0.0	ModelicaTest.Rotational.TestMove (sim)
ModelicaTest_4.1.0	ModelicaTest.Fluid.TestComponents.Fittings.TestJunctionVolume (sim)	Templates → Compile
ModelicaTest_4.1.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Air.DryAirNasa (sim)	Templates → Compile
ModelicaTest_4.1.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Air.MoistAir (sim)	Templates → Compile
ModelicaTest_4.1.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.Air (sim)	Templates → Compile
ModelicaTest_4.1.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.Nitrogen (sim)	Templates → Compile
ModelicaTest_4.1.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas (sim)	Templates → Compile
ModelicaTest_4.1.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition (sim)	Templates → Compile
ModelicaTest_4.1.0	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam (sim)	Templates → Compile
ModelicaTest_trunk	ModelicaTest.Fluid.TestComponents.Fittings.TestJunctionVolume (sim)	Templates → Compile
ModelicaTest_trunk	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Air.DryAirNasa (sim)	Templates → Compile
ModelicaTest_trunk	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Air.MoistAir (sim)	Templates → Compile
ModelicaTest_trunk	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.Air (sim)	Templates → Compile
ModelicaTest_trunk	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.Nitrogen (sim)	Templates → Compile
ModelicaTest_trunk	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas (sim)	Templates → Compile
ModelicaTest_trunk	ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasFixedComposition (sim)	Templates → Compile
ModelicaTest_trunk	ModelicaTest.Media.TestsWithFluid.MediaTestModels.Water.IdealSteam (sim)	Templates → Compile
Modelica_3.2.3	Modelica.Media.Examples.Tests.MediaTestModels.Incompressible.Essotherm650 (sim)	Templates → Simulate
Modelica_3.2.3	Modelica.Media.Examples.Tests.MediaTestModels.Incompressible.Glycol47 (sim)	Templates → Simulate
Modelica_4.0.0	Modelica.Clocked.Examples.CascadeControlledDrive.Continuous (sim)	Failed → FrontEnd
Modelica_4.1.0	Modelica.Electrical.Spice3.Examples.Spice3BenchmarkFourBitBinaryAdder (sim)
OpenIPSL_dev	OpenIPSL.Tests.Controls.PSSE.ES.ESST1A (sim)	Compile → Simulate
ScalableTestGrids_noopt	ScalableTestGrids.Models.Type1.Type1_N_6_M_4 (sim)	FrontEnd → Failed
ScalableTestSuite	ScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_40_M_40 (sim)	Templates → Compile
ScalableTestSuite_noopt	ScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_80_M_80 (sim)	SimCode performance 13.95 → 8.09
ScalableTestSuite_noopt	ScalableTestSuite.Mechanical.HarmonicOscillator.ScaledExperiments.HarmonicOscillatorNetwork_N_320 (sim)	Verify → Compile
ThermoPower	ThermoPower.Examples.BraytonCycle.ClosedLoopSimulator (sim)	Templates → Compile
ThermoPower	ThermoPower.Test.GasComponents.TestCC (sim)	Templates → Compile
ThermoPower	ThermoPower.Test.GasComponents.TestTurboJetConstSpeed (sim)	Templates → Compile
ThermoPower	ThermoPower.Test.GasComponents.TestTurboJetInertia (sim)	Templates → Compile
ThermoPower_4.0.0-dev	ThermoPower.Test.GasComponents.TestCC (sim)	Templates → Compile
ThermoPower_4.0.0-dev	ThermoPower.Test.GasComponents.TestTurboJetConstSpeed (sim)	Templates → Compile
ThermoPower_4.0.0-dev	ThermoPower.Test.GasComponents.TestTurboJetInertia (sim)	Templates → Compile