Make sure •HashMap table leaves last entry empty, as a sentinel
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51027cabe1
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72a9a95819
@ -727,12 +727,6 @@ B hashmap_lookup(B* vars, B w, B x) {
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void hashmap_set(B* vars, B w, B x) {
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HashMap* map = c(HashMap, vars[2]);
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u64* hp = map->a; u64 sh = map->sh;
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if (map->pop>>(64-3-sh)>7 || hp[map->sz-1]!=empty) { // keep load <= 7/8
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vars[2] = bi_N; // hashmap_resize might free then alloc
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map = hashmap_resize(map);
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vars[2] = tag(map, OBJ_TAG);
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hp=map->a; sh=map->sh;
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}
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usz i = IA(vars[0]);
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B* keys = harr_ptr(vars[0]);
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HASHMAP_INSERT(
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@ -740,6 +734,12 @@ void hashmap_set(B* vars, B w, B x) {
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B* s = harr_ptr(vars[1])+i; dec(*s); dec(w); *s=x; return;
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)
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map->pop++;
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if (map->pop>>(64-3-sh)>7 || je==map->sz-1) { // keep load <= 7/8
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vars[2] = bi_N; // hashmap_resize might free then alloc
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map = hashmap_resize(map);
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vars[2] = tag(map, OBJ_TAG);
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hp=map->a; sh=map->sh;
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}
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vars[0] = vec_addN(vars[0], w);
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vars[1] = vec_addN(vars[1], x);
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}
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