Pop exception objects from the bottom of GC arena; fix
MODIFY
src/error.c
src/error.c
@@ -229,6 +229,9 @@ mrb_exc_set(mrb_state *mrb, mrb_value exc)
}
else {
mrb->exc = mrb_obj_ptr(exc);
+ if ((struct RBasic*)mrb->exc == mrb->gc.arena[mrb->gc.arena_idx-1]) {
+ mrb->gc.arena_idx--;
+ }
if (!mrb->gc.out_of_memory) {
exc_debug_info(mrb, mrb->exc);
mrb_keep_backtrace(mrb, exc);

Pop exception objects from the bottom of GC arena; fix #3863