# Segfault when jl\_init in R (also python?) with julia 1.6 on macOS

**URL:** <https://discourse.julialang.org/t/segfault-when-jl-init-in-r-also-python-with-julia-1-6-on-macos/58110>\
**Category:** Tooling\
**Tags:** question, embedding\
**Created:** [March 28, 2021, 5:24am UTC](https://discourse.julialang.org/t/segfault-when-jl-init-in-r-also-python-with-julia-1-6-on-macos/58110 "2021-03-28T05:24:13Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![Non-Contradiction](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/non-contradiction/32/2208_2.png) [@Non-Contradiction](https://discourse.julialang.org/u/Non-Contradiction)\
**Post date:** [March 28, 2021, 2:58pm UTC](https://discourse.julialang.org/t/segfault-when-jl-init-in-r-also-python-with-julia-1-6-on-macos/58110/3 "2021-03-28T14:58:32Z")

</div>

The segfault error can also be replicated in python simply by

```julia
MacBookdeMacBook-Pro:~ macbookpro$ python3
Python 3.8.2 (default, Dec 21 2020, 15:06:04) 
[Clang 12.0.0 (clang-1200.0.32.29)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import ctypes
>>> libjulia = ctypes.PyDLL("/Applications/Julia-1.5.app/Contents/Resources/julia/lib/libjulia.1.5.dylib", ctypes.RTLD_GLOBAL)    
>>> libjulia.jl_init__threading()
775
>>> exit()
MacBookdeMacBook-Pro:~ macbookpro$ python3
Python 3.8.2 (default, Dec 21 2020, 15:06:04) 
[Clang 12.0.0 (clang-1200.0.32.29)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import ctypes
>>> libjulia = ctypes.PyDLL("/Applications/Julia-1.6.app/Contents/Resources/julia/lib/libjulia.1.6.dylib", ctypes.RTLD_GLOBAL)
>>> libjulia.jl_init__threading()
ERROR: Segmentation fault: 11
MacBookdeMacBook-Pro:~ macbookpro$ 

```

I will open an issue in julia repo since it seems to be some problem with `jl_init` in julia dll on mac instead of JuliaCall or PyJulia.  
Issue at [https://github.com/JuliaLang/julia/issues/40246](https://github.com/JuliaLang/julia/issues/40246)

---

_[View the full topic](https://discourse.julialang.org/t/segfault-when-jl-init-in-r-also-python-with-julia-1-6-on-macos/58110)._