Julia Crashed in Execution of Generated Symbolic Function.

[MiladRoboticist]

I generated this function and try to execute it:

const Kin = include("KinFuncComplete2.jl")

using Symbolics
using NaNMath
T = zeros(4,4)
TE1_diff_1 = zeros(4,4)
TE1_diff_2 = zeros(4,4)
TE1_diff_3 = zeros(4,4)
p1_int = zeros(3,)
p1_p1_transpose_int = zeros(3,3)
p1_diff_1_int = zeros(3,)
p1_diff_2_int = zeros(3,)
p1_diff_3_int = zeros(3,)
p1_p1_diff_1_t_int = zeros(3,3)
p1_p1_diff_2_t_int = zeros(3,3)
p1_p1_diff_3_t_int = zeros(3,3)

output = [T,TE1_diff_1,TE1_diff_2,TE1_diff_3,p1_int, p1_p1_transpose_int, p1_diff_1_int, p1_diff_2_int, p1_diff_3_int, p1_p1_diff_1_t_int, p1_p1_diff_2_t_int, p1_p1_diff_3_t_int]
q = [0.06,0.00,0.02]
r = 24e-3
xi = 1
L0 = 0.15
input = [q, r, xi, L0]

Kin(output, input)

println("output: ", output)
println("p1_int: ", p1_int)

I get the following error: please see the attached txt.

JuliaError.txt

[pfitzseb]

This is essentially #368.

[MiladRoboticist]

Thank you for your response. I read through the posts, and I believe my issue is similar. I generated the KinFuncComplete2.jl file using Symbolics.build_function, resulting in a very large function. However, I’m unsure if this issue has been resolved or if there’s a workaround I could use to fix it. Could you please clarify?

[c42f]

The workaround is to ignore the message and let the old flisp parser be used which is still available as a fallback (did your code work? It should have worked regardless of this big ugly message :) )

You can also set the environment variable JULIA_USE_FLISP_PARSER=true before launching julia.

[c42f]

For clarity - #368 is not resolved because it's quite a lot of work and I simply haven't have time. There is a proof of concept in #524 but it will very likely take several weeks of effort to make it into a full solution.

[MiladRoboticist]

Thank you, Claire, for your message. After running the code and encountering the error, the REPL freezes, so I haven't been able to use the code yet.

To set the environment variable, I created a config folder in C:\Users\milad.julia\config and added a startup.jl file with the following line:
ENV["JULIA_USE_FLISP_PARSER"] = "true"
Is this the correct approach?

I am running the code with this setup, but I haven't seen any results yet.

[nsajko]

did your code work? It should have worked regardless of this big ugly message

After running the code and encountering the error, the REPL freezes

I guess the stack overflow corrupted some state on stack.