Segfault; misuse of GC?

New to Julia
6

It’s pretty easy to find cases where rooting is necessary, though slightly more tricky to demonstrate very clearly what is going on.

The following is a fairly minimal example:

#include "julia.h"

int main()
{
    jl_init();

    jl_value_t *x = NULL;
    // JL_GC_PUSH1(&x); // Uncomment to remove the segfault
    x = jl_eval_string("1.1");
    jl_eval_string("GC.gc()"); // Will collect the value pointed to by `x` if you don't root it.
    // following will segfault (on my machine) if `x` has been collected
    jl_call1(jl_eval_string("println"), x);

    jl_atexit_hook(0);
    return 0;
}
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