MethodError on kwcall mentioning func! when calling func with keywords (Julia 1.11.4)

[diogosampaiolima]

Test code:

using PRIMA
using Test # To use @testset

println("PRIMA Version: ", PRIMA.VERSION) # Print the version
println("Julia Version: ", VERSION)

Simple objective

function my_obj(x::Vector{Float64})::Float64
return (x[1] - 2.0)^2 + (x[2] - 3.0)^2
end

x0 = Float64[0.0, 0.0]
xl = Float64[-5.0, -5.0]
xu = Float64[5.0, 5.0]
rhobeg = 0.5
rhoend = 1e-5
maxeval = 500

println("\nTesting simple call (no keywords):")
try
x_opt1, info1 = prima(my_obj, x0)
println(" Simple call OK. Result: x=$(x_opt1), fx=$(info1.fx), status=$(info1.status)")
@test issuccess(info1)
catch e
println(" Simple call FAILED. Error: $e")
# If this errors, PRIMA itself is broken
end

println("\nTesting call with keywords:")
try
# Use the general prima function first
x_opt2, info2 = prima(my_obj, x0; xl=xl, xu=xu, rhobeg=rhobeg, rhoend=rhoend, maxeval=maxeval)
println(" Keyword call (prima) OK. Result: x=$(x_opt2), fx=$(info2.fx), status=$(info2.status)")
@test issuccess(info2)
catch e
println(" Keyword call (prima) FAILED. Error: $e")
# This is where you expect the MethodError based on your results
@test e isa MethodError # Check if it's the expected error
end

println("\nTesting call with cobyla and keywords:")
try
# Test cobyla explicitly
x_opt3, info3 = PRIMA.cobyla(my_obj, x0; xl=xl, xu=xu, rhobeg=rhobeg, rhoend=rhoend, maxeval=maxeval)
println(" Keyword call (cobyla) OK. Result: x=$(x_opt3), fx=$(info3.fx), status=$(info3.status)")
@test issuccess(info3)
catch e
println(" Keyword call (cobyla) FAILED. Error: $e")
# This is where you expect the MethodError based on your results
@test e isa MethodError # Check if it's the expected error
end

Output:

julia> include("MRE.jl")
PRIMA Version: 1.11.4
Julia Version: 1.11.4

Testing simple call (no keywords):
Simple call OK. Result: x=[2.0, 3.0], fx=0.0, status=SMALL_TR_RADIUS

Testing call with keywords:
Keyword call (prima) FAILED. Error: MethodError(Core.kwcall, ((xl = [-5.0, -5.0], xu = [5.0, 5.0], rhobeg = 0.5, rhoend = 1.0e-5, maxeval = 500), PRIMA.prima!, Main.my_obj, [0.0, 0.0]), 0xffffffffffffffff)

Testing call with cobyla and keywords:
Keyword call (cobyla) FAILED. Error: MethodError(Core.kwcall, ((xl = [-5.0, -5.0], xu = [5.0, 5.0], rhobeg = 0.5, rhoend = 1.0e-5, maxeval = 500), PRIMA.cobyla!, Main.my_obj, [0.0, 0.0]), 0xffffffffffffffff)
Test Passed

My operating system is Ubuntu.

(@v1.11) pkg> st PRIMA
Status ~/.julia/environments/v1.11/Project.toml
[0a7d04aa] PRIMA v0.2.2

[emmt]

The try-catch block hides the origin of the error: you wrongly use the maxeval keyword, use maxfun instead. I have checked the doc and the code: there is no mention to maxeval anywhere. Below I have fixed your example and wrap it in a module to avoid Julia warning about assignement of variables in soft scope. I let you check that fixes the problem for you and close the issue.

module Issue38

using PRIMA, Test
function my_obj(x::Vector{Float64})::Float64
    return (x[1] - 2.0)^2 + (x[2] - 3.0)^2
end

x0 = Float64[0.0, 0.0]
xl = Float64[-5.0, -5.0]
xu = Float64[5.0, 5.0]
rhobeg = 0.5
rhoend = 1e-5
maxfun = 500

println("\nTesting simple call (no keywords):")
try
    x_opt1, info1 = prima(my_obj, x0)
    println(" Simple call OK. Result: x=$(x_opt1), fx=$(info1.fx), status=$(info1.status)")
    @test issuccess(info1)
catch e
    println(" Simple call FAILED. Error: $e")
    # If this errors, PRIMA itself is broken
end

println("\nTesting call with keywords:")
try
    # Use the general prima function first
    x_opt2, info2 = prima(my_obj, x0; xl=xl, xu=xu, rhobeg=rhobeg, rhoend=rhoend, maxfun=maxfun)
    println(" Keyword call (prima) OK. Result: x=$(x_opt2), fx=$(info2.fx), status=$(info2.status)")
    @test issuccess(info2)
catch e
    println(" Keyword call (prima) FAILED. Error: $e")
    # This is where you expect the MethodError based on your results
    @test e isa MethodError # Check if it's the expected error
end

println("\nTesting call with cobyla and keywords:")
try
    # Test cobyla explicitly
    x_opt3, info3 = PRIMA.cobyla(my_obj, x0; xl=xl, xu=xu, rhobeg=rhobeg, rhoend=rhoend, maxfun=maxfun)
    println(" Keyword call (cobyla) OK. Result: x=$(x_opt3), fx=$(info3.fx), status=$(info3.status)")
    @test issuccess(info3)
catch e
    println(" Keyword call (cobyla) FAILED. Error: $e")
    # This is where you expect the MethodError based on your results
    @test e isa MethodError # Check if it's the expected error
end

end # module

[emmt]

@diogosampaiolima I think the above answer justifies to close this issue. Do not hesitate to re-open if you disagree.