Use magic refs for compiled match specs

11 files changed, 100 insertions, 90 deletions

diff --git a/bootstrap/lib/stdlib/ebin/dets.beam b/bootstrap/lib/stdlib/ebin/dets.beam
index 95089f3ce0..75baaa543d 100644
--- a/bootstrap/lib/stdlib/ebin/dets.beam
+++ b/bootstrap/lib/stdlib/ebin/dets.beam
diff --git a/bootstrap/lib/stdlib/ebin/ets.beam b/bootstrap/lib/stdlib/ebin/ets.beam
index a26e189dfe..e66749048d 100644
--- a/bootstrap/lib/stdlib/ebin/ets.beam
+++ b/bootstrap/lib/stdlib/ebin/ets.beam
diff --git a/erts/emulator/beam/erl_db.c b/erts/emulator/beam/erl_db.c
index 6a915a88a1..9f077dd407 100644
--- a/erts/emulator/beam/erl_db.c
+++ b/erts/emulator/beam/erl_db.c
@@ -2779,7 +2779,7 @@ BIF_RETTYPE ets_info_2(BIF_ALIST_2)
 
 BIF_RETTYPE ets_is_compiled_ms_1(BIF_ALIST_1)
 {
-    if (erts_db_is_compiled_ms(BIF_ARG_1)) {
+    if (erts_db_get_match_prog_binary(BIF_ARG_1)) {
 	BIF_RET(am_true);
     } else {
 	BIF_RET(am_false);
@@ -2794,9 +2794,9 @@ BIF_RETTYPE ets_match_spec_compile_1(BIF_ALIST_1)
 	BIF_ERROR(BIF_P, BADARG);
     }
 
-    hp = HAlloc(BIF_P, PROC_BIN_SIZE);
+    hp = HAlloc(BIF_P, ERTS_MAGIC_REF_THING_SIZE);
 
-    BIF_RET(erts_mk_magic_binary_term(&hp, &MSO(BIF_P), mp));
+    BIF_RET(erts_db_make_match_prog_ref(BIF_P, mp, &hp));
 }
 
 BIF_RETTYPE ets_match_spec_run_r_3(BIF_ALIST_3)
@@ -2805,24 +2805,18 @@ BIF_RETTYPE ets_match_spec_run_r_3(BIF_ALIST_3)
     int i = 0;
     Eterm *hp;
     Eterm lst;
-    ProcBin *bp;
     Binary *mp;
     Eterm res;
     Uint32 dummy;
 
-    if (!(is_list(BIF_ARG_1) || BIF_ARG_1 == NIL) || !is_binary(BIF_ARG_2)) {
+    if (!(is_list(BIF_ARG_1) || BIF_ARG_1 == NIL)) {
     error:
 	BIF_ERROR(BIF_P, BADARG);
     }
     
-    bp = (ProcBin*) binary_val(BIF_ARG_2);
-    if (thing_subtag(bp->thing_word) != REFC_BINARY_SUBTAG) {
+    mp = erts_db_get_match_prog_binary(BIF_ARG_2);
+    if (!mp)
 	goto error;
-    }
-    mp = bp->val;
-    if (!IsMatchProgBinary(mp)) {
-	goto error;
-    }
 
     if (BIF_ARG_1 == NIL) {
 	BIF_RET(BIF_ARG_3);
diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c
index b2a231467b..bb29d56aa7 100644
--- a/erts/emulator/beam/erl_db_hash.c
+++ b/erts/emulator/beam/erl_db_hash.c
@@ -1287,15 +1287,13 @@ static int db_select_continue_hash(Process *p,
     if (arityval(*tptr) != 6)
 	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
     
-    if (!is_small(tptr[2]) || !is_small(tptr[3]) || !is_binary(tptr[4]) || 
+    if (!is_small(tptr[2]) || !is_small(tptr[3]) || 
 	!(is_list(tptr[5]) || tptr[5] == NIL) || !is_small(tptr[6]))
 	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
     if ((chunk_size = signed_val(tptr[3])) < 0)
 	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
-    if (!(thing_subtag(*binary_val(tptr[4])) == REFC_BINARY_SUBTAG))
-	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
-    mp = ((ProcBin *) binary_val(tptr[4]))->val;
-    if (!IsMatchProgBinary(mp))
+    mp = erts_db_get_match_prog_binary(tptr[4]);
+    if (!mp)
 	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
     all_objects = mp->flags & BIN_FLAG_ALL_OBJECTS;
     match_list = tptr[5];
@@ -1554,8 +1552,8 @@ done:
 					 been in 'user space' */ 
 	}
 	if (rest != NIL || slot_ix >= 0) { /* Need more calls */
-	    hp = HAlloc(p,3+7+PROC_BIN_SIZE);
-	    mpb =db_make_mp_binary(p,(mpi.mp),&hp);
+	    hp = HAlloc(p,3+7+ERTS_MAGIC_REF_THING_SIZE);
+	    mpb = erts_db_make_match_prog_ref(p,(mpi.mp),&hp);
 	    if (mpi.all_objects)
 		(mpi.mp)->flags |= BIN_FLAG_ALL_OBJECTS;
 	    continuation = TUPLE6(hp, tb->common.id,make_small(slot_ix), 
@@ -1580,8 +1578,8 @@ trap:
     BUMP_ALL_REDS(p);
     if (mpi.all_objects)
 	(mpi.mp)->flags |= BIN_FLAG_ALL_OBJECTS;
-    hp = HAlloc(p,7+PROC_BIN_SIZE);
-    mpb =db_make_mp_binary(p,(mpi.mp),&hp);
+    hp = HAlloc(p,7+ERTS_MAGIC_REF_THING_SIZE);
+    mpb = erts_db_make_match_prog_ref(p,(mpi.mp),&hp);
     continuation = TUPLE6(hp, tb->common.id, make_small(slot_ix), 
 			  make_small(chunk_size), 
 			  mpb, match_list, 
@@ -1693,15 +1691,15 @@ done:
 trap:
     BUMP_ALL_REDS(p);
     if (IS_USMALL(0, got)) {
-	hp = HAlloc(p,  PROC_BIN_SIZE + 5);
+	hp = HAlloc(p,  ERTS_MAGIC_REF_THING_SIZE + 5);
 	egot = make_small(got);
     }
     else {
-	hp = HAlloc(p, BIG_UINT_HEAP_SIZE + PROC_BIN_SIZE + 5);
+	hp = HAlloc(p, BIG_UINT_HEAP_SIZE + ERTS_MAGIC_REF_THING_SIZE + 5);
 	egot = uint_to_big(got, hp);
 	hp += BIG_UINT_HEAP_SIZE;
     }
-    mpb = db_make_mp_binary(p,mpi.mp,&hp);
+    mpb = erts_db_make_match_prog_ref(p,mpi.mp,&hp);
     continuation = TUPLE4(hp, tb->common.id, make_small(slot_ix), 
 			  mpb, 
 			  egot);
@@ -1838,15 +1836,15 @@ done:
 trap:
     BUMP_ALL_REDS(p);
     if (IS_USMALL(0, got)) {
-	hp = HAlloc(p,  PROC_BIN_SIZE + 5);
+	hp = HAlloc(p,  ERTS_MAGIC_REF_THING_SIZE + 5);
 	egot = make_small(got);
     }
     else {
-	hp = HAlloc(p, BIG_UINT_HEAP_SIZE + PROC_BIN_SIZE + 5);
+	hp = HAlloc(p, BIG_UINT_HEAP_SIZE + ERTS_MAGIC_REF_THING_SIZE + 5);
 	egot = uint_to_big(got, hp);
 	hp += BIG_UINT_HEAP_SIZE;
     }
-    mpb = db_make_mp_binary(p,mpi.mp,&hp);
+    mpb = erts_db_make_match_prog_ref(p,mpi.mp,&hp);
     continuation = TUPLE4(hp, tb->common.id, make_small(slot_ix), 
 			  mpb, 
 			  egot);
@@ -1887,7 +1885,7 @@ static int db_select_delete_continue_hash(Process *p,
     
     tptr = tuple_val(continuation);
     slot_ix = unsigned_val(tptr[2]);
-    mp = ((ProcBin *) binary_val(tptr[3]))->val;
+    mp = erts_db_get_match_prog_binary_unchecked(tptr[3]);
     if (is_big(tptr[4])) {
 	got = big_to_uint32(tptr[4]);
     } else {
@@ -1999,7 +1997,7 @@ static int db_select_count_continue_hash(Process *p,
     
     tptr = tuple_val(continuation);
     slot_ix = unsigned_val(tptr[2]);
-    mp = ((ProcBin *) binary_val(tptr[3]))->val;
+    mp = erts_db_get_match_prog_binary_unchecked(tptr[3]);
     if (is_big(tptr[4])) {
 	got = big_to_uint32(tptr[4]);
     } else {
diff --git a/erts/emulator/beam/erl_db_tree.c b/erts/emulator/beam/erl_db_tree.c
index dd9403e132..c4ecd2ba37 100644
--- a/erts/emulator/beam/erl_db_tree.c
+++ b/erts/emulator/beam/erl_db_tree.c
@@ -935,17 +935,15 @@ static int db_select_continue_tree(Process *p,
     if (arityval(*tptr) != 8)
 	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
     
-    if (!is_small(tptr[4]) || !is_binary(tptr[5]) || 
+    if (!is_small(tptr[4]) ||
 	!(is_list(tptr[6]) || tptr[6] == NIL) || !is_small(tptr[7]) ||
 	!is_small(tptr[8]))
 	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
     
     lastkey = tptr[2];
     end_condition = tptr[3];
-    if (!(thing_subtag(*binary_val(tptr[5])) == REFC_BINARY_SUBTAG))
-	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
-    mp = ((ProcBin *) binary_val(tptr[5]))->val;
-    if (!IsMatchProgBinary(mp))
+    mp = erts_db_get_match_prog_binary(tptr[5]);
+    if (!mp)
 	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
     chunk_size = signed_val(tptr[4]);
 
@@ -1145,11 +1143,11 @@ static int db_select_tree(Process *p, DbTable *tbl,
 
     key = GETKEY(tb, sc.lastobj);
     sz = size_object(key);
-    hp = HAlloc(p, 9 + sz + PROC_BIN_SIZE);
+    hp = HAlloc(p, 9 + sz + ERTS_MAGIC_REF_THING_SIZE);
     key = copy_struct(key, sz, &hp, &MSO(p));
     if (mpi.all_objects)
 	(mpi.mp)->flags |= BIN_FLAG_ALL_OBJECTS;
-    mpb=db_make_mp_binary(p,mpi.mp,&hp);
+    mpb= erts_db_make_match_prog_ref(p,mpi.mp,&hp);
 	    
     continuation = TUPLE8
 	(hp,
@@ -1208,10 +1206,8 @@ static int db_select_count_continue_tree(Process *p,
     
     lastkey = tptr[2];
     end_condition = tptr[3];
-    if (!(thing_subtag(*binary_val(tptr[4])) == REFC_BINARY_SUBTAG))
-	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
-    mp = ((ProcBin *) binary_val(tptr[4]))->val;
-    if (!IsMatchProgBinary(mp))
+    mp = erts_db_get_match_prog_binary(tptr[4]);
+    if (!mp)
 	RET_TO_BIF(NIL,DB_ERROR_BADPARAM);
 
     sc.p = p;
@@ -1338,18 +1334,18 @@ static int db_select_count_tree(Process *p, DbTable *tbl,
     key = GETKEY(tb, sc.lastobj);
     sz = size_object(key);
     if (IS_USMALL(0, sc.got)) {
-	hp = HAlloc(p, sz + PROC_BIN_SIZE + 6);
+	hp = HAlloc(p, sz + ERTS_MAGIC_REF_THING_SIZE + 6);
 	egot = make_small(sc.got);
     }
     else {
-	hp = HAlloc(p, BIG_UINT_HEAP_SIZE + sz + PROC_BIN_SIZE + 6);
+	hp = HAlloc(p, BIG_UINT_HEAP_SIZE + sz + ERTS_MAGIC_REF_THING_SIZE + 6);
 	egot = uint_to_big(sc.got, hp);
 	hp += BIG_UINT_HEAP_SIZE;
     }
     key = copy_struct(key, sz, &hp, &MSO(p));
     if (mpi.all_objects)
 	(mpi.mp)->flags |= BIN_FLAG_ALL_OBJECTS;
-    mpb = db_make_mp_binary(p,mpi.mp,&hp);
+    mpb = erts_db_make_match_prog_ref(p,mpi.mp,&hp);
 	    
     continuation = TUPLE5
 	(hp,
@@ -1470,11 +1466,11 @@ static int db_select_chunk_tree(Process *p, DbTable *tbl,
 
 	key = GETKEY(tb, sc.lastobj);
 	sz = size_object(key);
-	hp = HAlloc(p, 9 + sz + PROC_BIN_SIZE);
+	hp = HAlloc(p, 9 + sz + ERTS_MAGIC_REF_THING_SIZE);
 	key = copy_struct(key, sz, &hp, &MSO(p));
 	if (mpi.all_objects)
 	    (mpi.mp)->flags |= BIN_FLAG_ALL_OBJECTS;
-	mpb = db_make_mp_binary(p,mpi.mp,&hp);
+	mpb = erts_db_make_match_prog_ref(p,mpi.mp,&hp);
 	
 	continuation = TUPLE8
 	    (hp,
@@ -1495,12 +1491,12 @@ static int db_select_chunk_tree(Process *p, DbTable *tbl,
 
     key = GETKEY(tb, sc.lastobj);
     sz = size_object(key);
-    hp = HAlloc(p, 9 + sz + PROC_BIN_SIZE);
+    hp = HAlloc(p, 9 + sz + ERTS_MAGIC_REF_THING_SIZE);
     key = copy_struct(key, sz, &hp, &MSO(p));
 
     if (mpi.all_objects)
 	(mpi.mp)->flags |= BIN_FLAG_ALL_OBJECTS;
-    mpb = db_make_mp_binary(p,mpi.mp,&hp);    
+    mpb = erts_db_make_match_prog_ref(p,mpi.mp,&hp);
     continuation = TUPLE8
 	(hp,
 	 tb->common.id,
@@ -1558,7 +1554,7 @@ static int db_select_delete_continue_tree(Process *p,
     sc.erase_lastterm = 0; /* Before first RET_TO_BIF */
     sc.lastterm = NULL;
 
-    mp = ((ProcBin *) binary_val(tptr[4]))->val;
+    mp = erts_db_get_match_prog_binary_unchecked(tptr[4]);
     sc.p = p;
     sc.tb = tb;
     if (is_big(tptr[5])) {
@@ -1682,16 +1678,16 @@ static int db_select_delete_tree(Process *p, DbTable *tbl,
     key = GETKEY(tb, (sc.lastterm)->dbterm.tpl);
     sz = size_object(key);
     if (IS_USMALL(0, sc.accum)) {
-	hp = HAlloc(p, sz + PROC_BIN_SIZE + 6);
+	hp = HAlloc(p, sz + ERTS_MAGIC_REF_THING_SIZE + 6);
 	eaccsum = make_small(sc.accum);
     }
     else {
-	hp = HAlloc(p, BIG_UINT_HEAP_SIZE + sz + PROC_BIN_SIZE + 6);
+	hp = HAlloc(p, BIG_UINT_HEAP_SIZE + sz + ERTS_MAGIC_REF_THING_SIZE + 6);
 	eaccsum = uint_to_big(sc.accum, hp);
 	hp += BIG_UINT_HEAP_SIZE;
     }
     key = copy_struct(key, sz, &hp, &MSO(p));
-    mpb = db_make_mp_binary(p,mpi.mp,&hp);
+    mpb = erts_db_make_match_prog_ref(p,mpi.mp,&hp);
     
     continuation = TUPLE5
 	(hp,
diff --git a/erts/emulator/beam/erl_db_util.c b/erts/emulator/beam/erl_db_util.c
index 0ab42394ce..070e29578f 100644
--- a/erts/emulator/beam/erl_db_util.c
+++ b/erts/emulator/beam/erl_db_util.c
@@ -2545,14 +2545,6 @@ success:
 }
 
 
-/*
- * Convert a match program to a "magic" binary to return up to erlang
- */
-Eterm db_make_mp_binary(Process *p, Binary *mp, Eterm **hpp)
-{
-    return erts_mk_magic_binary_term(hpp, &MSO(p), mp);
-}
-
 DMCErrInfo *db_new_dmc_err_info(void) 
 {
     DMCErrInfo *ret = erts_alloc(ERTS_ALC_T_DB_DMC_ERR_INFO,
@@ -3266,13 +3258,6 @@ int db_has_variable(Eterm node) {
     return 0;
 }
 
-int erts_db_is_compiled_ms(Eterm term)
-{
-    return (is_binary(term)
-	    && (thing_subtag(*binary_val(term)) == REFC_BINARY_SUBTAG)
-	    && IsMatchProgBinary((((ProcBin *) binary_val(term))->val)));
-}
-
 /* 
 ** Local (static) utilities.
 */
diff --git a/erts/emulator/beam/erl_db_util.h b/erts/emulator/beam/erl_db_util.h
index 3fb063797e..b2a3bb6c20 100644
--- a/erts/emulator/beam/erl_db_util.h
+++ b/erts/emulator/beam/erl_db_util.h
@@ -23,6 +23,7 @@
 
 #include "global.h"
 #include "erl_message.h"
+#include "erl_bif_unique.h"
 
 /*#define HARDDEBUG 1*/
 
@@ -456,10 +457,44 @@ Eterm db_format_dmc_err_info(Process *p, DMCErrInfo *ei);
 void db_free_dmc_err_info(DMCErrInfo *ei);
 /* Completely free's an error info structure, including all recorded 
    errors */
-Eterm db_make_mp_binary(Process *p, Binary *mp, Eterm **hpp);
-/* Convert a match program to a erlang "magic" binary to be returned to userspace,
-   increments the reference counter. */
-int erts_db_is_compiled_ms(Eterm term);
+
+ERTS_GLB_INLINE Eterm erts_db_make_match_prog_ref(Process *p, Binary *mp, Eterm **hpp);
+ERTS_GLB_INLINE Binary *erts_db_get_match_prog_binary(Eterm term);
+ERTS_GLB_INLINE Binary *erts_db_get_match_prog_binary_unchecked(Eterm term);
+
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+/*
+ * Convert a match program to a "magic" ref to return up to erlang
+ */
+ERTS_GLB_INLINE Eterm erts_db_make_match_prog_ref(Process *p, Binary *mp, Eterm **hpp)
+{
+    return erts_mk_magic_ref(hpp, &MSO(p), mp);
+}
+
+ERTS_GLB_INLINE Binary *
+erts_db_get_match_prog_binary_unchecked(Eterm term)
+{
+    Binary *bp = erts_magic_ref2bin(term);
+    ASSERT(bp->flags & BIN_FLAG_MAGIC);
+    ASSERT((ERTS_MAGIC_BIN_DESTRUCTOR(bp) == erts_db_match_prog_destructor));
+    return bp;
+}
+
+ERTS_GLB_INLINE Binary *
+erts_db_get_match_prog_binary(Eterm term)
+{
+    Binary *bp;
+    if (!is_internal_magic_ref(term))
+	return NULL;
+    bp = erts_magic_ref2bin(term);
+    ASSERT(bp->flags & BIN_FLAG_MAGIC);
+    if (ERTS_MAGIC_BIN_DESTRUCTOR(bp) != erts_db_match_prog_destructor)
+	return NULL;
+    return bp;
+}
+
+#endif
 
 /*
 ** Convenience when compiling into Binary structures
diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c
index 060fbd5883..5e54e5aef2 100644
--- a/erts/emulator/beam/erl_node_tables.c
+++ b/erts/emulator/beam/erl_node_tables.c
@@ -1131,7 +1131,7 @@ insert_offheap(ErlOffHeap *oh, int type, Eterm id)
 		InsertedBin *ib;
 		int insert_bin = 1;
 		for (ib = inserted_bins; ib; ib = ib->next)
-		    if(ib->bin_val == u.pb->val) {
+		    if(ib->bin_val == (Binary *) u.mref->mb) {
 			insert_bin = 0;
 			break;
 		    }
@@ -1140,12 +1140,12 @@ insert_offheap(ErlOffHeap *oh, int type, Eterm id)
 		    Uint *hp = &id_heap[0];
 		    InsertedBin *nib;
 		    UseTmpHeapNoproc(BIG_UINT_HEAP_SIZE);
-		    a.id = erts_bld_uint(&hp, NULL, (Uint) u.pb->val);
-		    erts_match_prog_foreach_offheap(u.pb->val,
+		    a.id = erts_bld_uint(&hp, NULL, (Uint) u.mref->mb);
+		    erts_match_prog_foreach_offheap((Binary *) u.mref->mb,
 						    insert_offheap2,
 						    (void *) &a);
 		    nib = erts_alloc(ERTS_ALC_T_NC_TMP, sizeof(InsertedBin));
-		    nib->bin_val = u.pb->val;
+		    nib->bin_val = (Binary *) u.mref->mb;
 		    nib->next = inserted_bins;
 		    inserted_bins = nib;
 		    UnUseTmpHeapNoproc(BIG_UINT_HEAP_SIZE);
diff --git a/lib/stdlib/src/dets.erl b/lib/stdlib/src/dets.erl
index 5bc9475fc8..e81383775b 100644
--- a/lib/stdlib/src/dets.erl
+++ b/lib/stdlib/src/dets.erl
@@ -1063,11 +1063,8 @@ foldl_bins([Bin | Bins], MP, Terms) ->
 compile_match_spec(select, ?PATTERN_TO_OBJECT_MATCH_SPEC('_') = Spec) ->
     {Spec, true};
 compile_match_spec(select, Spec) ->
-    case catch ets:match_spec_compile(Spec) of
-	X when is_binary(X) ->
-	    {Spec, {match_spec, X}};
-	_ ->
-	    badarg
+    try {Spec, {match_spec, ets:match_spec_compile(Spec)}}
+    catch error:_ -> badarg
     end;
 compile_match_spec(object, Pat) ->
     compile_match_spec(select, ?PATTERN_TO_OBJECT_MATCH_SPEC(Pat));
diff --git a/lib/stdlib/src/ets.erl b/lib/stdlib/src/ets.erl
index 20de06fd0b..d6fd1e3ea1 100644
--- a/lib/stdlib/src/ets.erl
+++ b/lib/stdlib/src/ets.erl
@@ -51,8 +51,8 @@
 -type tab()        :: atom() | tid().
 -type type()       :: set | ordered_set | bag | duplicate_bag.
 -type continuation() :: '$end_of_table'
-                      | {tab(),integer(),integer(),binary(),list(),integer()}
-                      | {tab(),_,_,integer(),binary(),list(),integer(),integer()}.
+                      | {tab(),integer(),integer(),comp_match_spec(),list(),integer()}
+                      | {tab(),_,_,integer(),comp_match_spec(),list(),integer(),integer()}.
 
 -opaque tid()      :: integer().
 
@@ -488,7 +488,7 @@ update_element(_, _, _) ->
 
 %%% End of BIFs
 
--opaque comp_match_spec() :: binary().  %% this one is REALLY opaque
+-opaque comp_match_spec() :: reference().
 
 -spec match_spec_run(List, CompiledMatchSpec) -> list() when
       List :: [tuple()],
@@ -505,28 +505,28 @@ match_spec_run(List, CompiledMS) ->
 repair_continuation('$end_of_table', _) ->
     '$end_of_table';
 %% ordered_set
-repair_continuation(Untouched = {Table,Lastkey,EndCondition,N2,Bin,L2,N3,N4}, MS)
+repair_continuation(Untouched = {Table,Lastkey,EndCondition,N2,MSRef,L2,N3,N4}, MS)
   when %% (is_atom(Table) or is_integer(Table)),
        is_integer(N2),
-       byte_size(Bin) =:= 0,
+      %% is_reference(MSRef),
        is_list(L2),
        is_integer(N3),
        is_integer(N4) ->
-    case ets:is_compiled_ms(Bin) of
+    case ets:is_compiled_ms(MSRef) of
 	true ->
 	    Untouched;
 	false ->
 	    {Table,Lastkey,EndCondition,N2,ets:match_spec_compile(MS),L2,N3,N4}
     end;
 %% set/bag/duplicate_bag
-repair_continuation(Untouched = {Table,N1,N2,Bin,L,N3}, MS)
+repair_continuation(Untouched = {Table,N1,N2,MSRef,L,N3}, MS)
   when %% (is_atom(Table) or is_integer(Table)),
        is_integer(N1),
        is_integer(N2),
-       byte_size(Bin) =:= 0,
+      %% is_reference(MSRef),
        is_list(L),
        is_integer(N3) ->
-    case ets:is_compiled_ms(Bin) of
+    case ets:is_compiled_ms(MSRef) of
 	true ->
 	    Untouched;
 	false ->
diff --git a/lib/stdlib/test/dets_SUITE.erl b/lib/stdlib/test/dets_SUITE.erl
index aa31fdde5a..95c9b47465 100644
--- a/lib/stdlib/test/dets_SUITE.erl
+++ b/lib/stdlib/test/dets_SUITE.erl
@@ -3012,8 +3012,13 @@ repair_continuation(Config) ->
 
     MS = [{'_',[],[true]}],
 
-    {[true], C1} = dets:select(Tab, MS, 1),
-    C2 = binary_to_term(term_to_binary(C1)),
+    SRes = term_to_binary(dets:select(Tab, MS, 1)),
+    %% Get rid of compiled match spec
+    lists:foreach(fun (P) ->
+                          garbage_collect(P)
+                  end, processes()),
+    {[true], C2} = binary_to_term(SRes),
+
     {'EXIT', {badarg, _}} = (catch dets:select(C2)),
     C3 = dets:repair_continuation(C2, MS),
     {[true], C4} = dets:select(C3),