Full issue description here , along with workarounds and alternative code. Following segfaults for me, tested on Windows, Linux, Julia 1.4.1 and 1.4.2: module Foo null_handler(x) = nothing mutable struct A1{T} value::T h::Base.CFunction function A1(value::T) where {T} new{T}(val…

Segfault with cfunction, possibly world age related

oheil July 2, 2020, 9:06am 2

I can reproduce in Julia 1.4.1, but it seems to be resolved in 1.5.0-rc1

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