tvix: fix GC escapes

#43
Opened by riking at 2020-08-10T04·43+00

Currently, attempting to run tvix with the GC enabled results in spectacular crashes because various pointers in libexpr are not traceable, leading to use-after-frees during evaluation.

Known GC escapes:

  1. GC is gone.

    riking at 2020-08-17T01·33+00

  2. riking closed this issue at 2020-08-17T01·33+00