MadNLP fails to solve QP on julia-nightly

[mipals]

Hello there,

Solving a QP using MadNLP seems to fail on my test for julia-nightly on ubuntu-latest. Here is the error

/home/runner/work/GeneralizedSmoothingSplines.jl/GeneralizedSmoothingSplines.jl/test/runtests.jl:7
  Got exception outside of a @test
  LoadError: ArgumentError: strides is invalid for SubArrays with indices of type Vector{Int64}
  Stacktrace:
    [1] substrides(strds::Tuple{Int64}, I::Tuple{Vector{Int64}})
      @ Base ./subarray.jl:366
    [2] strides(V::SubArray{Float64, 1, Vector{Float64}, Tuple{Vector{Int64}}, false})
      @ Base ./subarray.jl:360
    [3] stride(V::SubArray{Float64, 1, Vector{Float64}, Tuple{Vector{Int64}}, false}, d::Int64)
      @ Base ./subarray.jl:368
    [4] vec_pointer_stride
      @ /opt/hostedtoolcache/julia/nightly/x64/share/julia/stdlib/v1.9/LinearAlgebra/src/blas.jl:153 [inlined]
    [5] axpy!(alpha::Float64, x::Vector{Float64}, y::SubArray{Float64, 1, Vector{Float64}, Tuple{Vector{Int64}}, false})
      @ LinearAlgebra.BLAS /opt/hostedtoolcache/julia/nightly/x64/share/julia/stdlib/v1.9/LinearAlgebra/src/blas.jl:494
    [6] regular!(ips::MadNLP.InteriorPointSolver{MadNLP.SparseKKTSystem{Float64, SparseArrays.SparseMatrixCSC{Float64, Int32}}})
      @ MadNLP ~/.julia/packages/MadNLP/4CmQz/src/interiorpointsolver.jl:780
    [7] optimize!(ips::MadNLP.InteriorPointSolver{MadNLP.SparseKKTSystem{Float64, SparseArrays.SparseMatrixCSC{Float64, Int32}}})
      @ MadNLP ~/.julia/packages/MadNLP/4CmQz/src/interiorpointsolver.jl:612
    [8] optimize!(model::MadNLP.Optimizer)
      @ MadNLP ~/.julia/packages/MadNLP/4CmQz/src/Interfaces/MOI_interface.jl:1168
    [9] optimize!
      @ ~/.julia/packages/MathOptInterface/ajp5T/src/Bridges/bridge_optimizer.jl:354 [inlined]
   [10] optimize!
      @ ~/.julia/packages/MathOptInterface/ajp5T/src/MathOptInterface.jl:87 [inlined]
   [11] optimize!(m::MathOptInterface.Utilities.CachingOptimizer{MathOptInterface.Bridges.LazyBridgeOptimizer{MadNLP.Optimizer}, MathOptInterface.Utilities.UniversalFallback{MathOptInterface.Utilities.Model{Float64}}})

Looking at the error, it seems to refer to a interpointsolver.jl, which does not exist anymore en this repo, so it is kind of hard to debug this.

Cheers,
Mikkel

[sshin23]

Thanks for reporting this @mipals. Based on the stack trace, this looks like a LinearAlgebra stdlib issue. I'll close the issue for now, but we can take a closer look if this issue persists even with the beta release of julia.