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ecl_alloc_weak_pointer: don't register immediate objects as disappearing

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We have special-cased all immediate objects except ECL_T. Creating such link
leads to a segmentation fault when GC tries to dereference the pointer. Fixes #610.
This commit is contained in:
Daniel Kochmański 2020-10-19 16:52:43 +02:00
parent 246f0a6d86
commit 7f1813cd93
1 changed files with 1 additions and 1 deletions
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2
src/c/alloc_2.d
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@ -1448,7 +1448,7 @@ ecl_alloc_weak_pointer(cl_object o)
ecl_enable_interrupts_env(the_env);
obj->t = t_weak_pointer;
obj->value = o;
if (!ECL_FIXNUMP(o) && !ECL_CHARACTERP(o) && !Null(o)) {
if (!ECL_IMMEDIATE(o)) {
GC_GENERAL_REGISTER_DISAPPEARING_LINK((void**)&(obj->value), (void*)o);
si_set_finalizer((cl_object)obj, ECL_T);
}