A patch of the 6.40 release series. A few items were addressed: see list below.

Items addressed for this release

• #23036 - system.rootrc ships three settings that nothing reads (WebGui.HttpLoopback, WebGui.WaitForTmout, Browser.StartUrl)
• #23026 - ROOT fails to configure with CMake 4.4
• #22981 - [ntuple] streamer field end up using wrong type name
• #22959 - [RF] Bug with RooExtendPdf produces inconsistency in rf204b_extendedLikelihood_rangedFit.C between before 6.26 and after 6.28
• #22938 - R__memcompress fails with limited stack size
• #22858 - [RF] RooBinIntegreator gives wrong result for integrals that cut thought bin boundaries
• #22855 - [ntuple] double free when resizing small RVec
• #22843 - TMath::Laplacian computes wrong finite differences
• #22831 - TGDMLParse silently drops elements whose name collides with a material name after 0x pointer-suffix stripping
• #22769 - Histogram with fit function not correctly drawn to canvas in Jupyter notebook with JsROOT on
• #22727 - [jsroot] Scroll breaks on SWAN when using %rootbrowse
• #22692 - Providing analytical Hessian reduces robustness of minimization to initial values in Minuit2
• #22656 - [rootcling] external software no longer compiles with ROOT 6.40 (regression)
• #22501 - THttpServer/TRootSniffer: exe.json leaks the object returned by the executed method (e.g. TH2::ProjectionY)
• #22473 - [tmva][sofie] Conv generates invalid code and crashes for dilation > 1
• #22395 - TGeoTessellated volumes read from GDML impossible to be closed (6.40.00 regression)
• #22359 - "Second registration of" error with a template argument "missing"
• #21402 - [RF] Building of Histograms/Errors from a workspace with a region with many bins is super slow
• #20697 - [RF] Add support to set the nominal value and limits for the ShapeFactor parameters in HistFactory
• #20116 - Wrong integrals for RooHistPdf with interpolation order = 1
• #20018 - ROOT.TColor.DefinedColors(1) problematic in jupyter notebooks
• #19560 - TTreeIndex fails under Valgrind due to long double emulation
• #18683 - [RF] Parallelize per-channel workspace creation in MakeModelAndMeasurementsFast
• #17483 - wsl2 menu display issue
• #14255 - [RF] Asymmetry plots with RooFit
• #10784 - TKDTreeBinning missing bins
• #10240 - TTree: Creating a branch with std::vector can raise an internal error when mixing I/O systems.
• #6378 - TTreeFormula Alt$ gives (silently) wrong result when used by itself.