read_referernce takes a gamedata object.

with all the trimmings that requires,
this is for github issue $479

src/attributes/dict.c

@@ -128,22 +128,22 @@ static int dict_read(attrib * a, void *owner, gamedata *data)
         break;
     case TBUILDING:
         result =
-            read_reference(&dd->data.b, store, read_building_reference,
-            resolve_building);
+            read_reference(&dd->data.b, data, read_building_reference, 
+                resolve_building);
         if (result == 0 && !dd->data.b) {
             return AT_READ_FAIL;
         }
         break;
     case TUNIT:
         result =
-            read_reference(&dd->data.u, store, read_unit_reference, resolve_unit);
+            read_reference(&dd->data.u, data, read_unit_reference, resolve_unit);
         if (result == 0 && !dd->data.u) {
             return AT_READ_FAIL;
         }
         break;
     case TFACTION:
         result =
-            read_reference(&dd->data.f, store, read_faction_reference,
+            read_reference(&dd->data.f, data, read_faction_reference,
             resolve_faction);
         if (result == 0 && !dd->data.f) {
             return AT_READ_FAIL;
@@ -151,7 +151,7 @@ static int dict_read(attrib * a, void *owner, gamedata *data)
         break;
     case TREGION:
         result =
-            read_reference(&dd->data.r, store, read_region_reference,
+            read_reference(&dd->data.r, data, read_region_reference,
             RESOLVE_REGION(data->version));
         if (result == 0 && !dd->data.r) {
             return AT_READ_FAIL;

src/attributes/follow.c

@@ -30,7 +30,7 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 static int read_follow(attrib * a, void *owner, gamedata *data)
 {
-    read_unit_reference(data->store);   /* skip it */
+    read_unit_reference(data);   /* skip it */
     return AT_READ_FAIL;
 }
 

src/attributes/hate.c

@@ -46,8 +46,8 @@ write_hate(const attrib * a, const void *owner, struct storage *store)
 
 static int read_hate(attrib * a, void *owner, gamedata *data)
 {
-    int result =
-        read_reference(&a->data.v, data->store, read_unit_reference, resolve_unit);
+    int result = read_reference(&a->data.v, data, read_unit_reference,
+        resolve_unit);
     if (result == 0 && !a->data.v) {
         return AT_READ_FAIL;
     }

src/attributes/targetregion.c

@@ -38,8 +38,7 @@ write_targetregion(const attrib * a, const void *owner, struct storage *store)
 
 static int read_targetregion(attrib * a, void *owner, gamedata *data)
 {
-    int result =
-        read_reference(&a->data.v, data->store, read_region_reference,
+    int result = read_reference(&a->data.v, data, read_region_reference,
         RESOLVE_REGION(data->version));
     if (result == 0 && !a->data.v)
         return AT_READ_FAIL;

src/building_action.c

@@ -107,7 +107,7 @@ static int lc_read(struct attrib *a, void *owner, gamedata *data)
     building *b = (building *)owner;
     int result = 0;
     if (data->version < ATTRIBOWNER_VERSION) {
-        result = read_reference(&b, store, read_building_reference, resolve_building);
+        result = read_reference(&b, data, read_building_reference, resolve_building);
         assert(b == owner);
     }
     READ_TOK(store, name, sizeof(name));

src/kernel/building.c

@@ -386,10 +386,10 @@ int resolve_building(variant id, void *address)
     return result;
 }
 
-variant read_building_reference(struct storage * store)
+variant read_building_reference(gamedata * data)
 {
     variant result;
-    READ_INT(store, &result.i);
+    READ_INT(data->store, &result.i);
     return result;
 }
 

src/kernel/building.h

@@ -158,7 +158,7 @@ extern "C" {
     extern int resolve_building(variant data, void *address);
     extern void write_building_reference(const struct building *b,
     struct storage *store);
-    extern variant read_building_reference(struct storage *store);
+    extern variant read_building_reference(struct gamedata *data);
 
     extern struct building *findbuilding(int n);
 

src/kernel/curse.c

@@ -203,10 +203,10 @@ int curse_read(attrib * a, void *owner, gamedata *data)
     READ_FLT(store, &flt);
     c->vigour = flt;
     if (data->version < INTPAK_VERSION) {
-        ur = read_reference(&c->magician, store, read_int, resolve_unit);
+        ur = resolve_unit(read_int(data->store), &c->magician);
     }
     else {
-        ur = read_reference(&c->magician, store, read_unit_reference, resolve_unit);
+        ur = read_reference(&c->magician, data, read_unit_reference, resolve_unit);
     }
     if (data->version < CURSEFLOAT_VERSION) {
         READ_INT(store, &n);
@@ -230,14 +230,15 @@ int curse_read(attrib * a, void *owner, gamedata *data)
         c_clearflag(c, CURSE_ISNEW);
     }
 
-    if (c->type->read)
-        c->type->read(store, c, owner);
+    if (c->type->read) {
+        c->type->read(data, c, owner);
+    }
     else if (c->type->typ == CURSETYP_UNIT) {
         READ_INT(store, &c->data.i);
     }
     if (c->type->typ == CURSETYP_REGION) {
         int rr =
-            read_reference(&c->data.v, store, read_region_reference,
+            read_reference(&c->data.v, data, read_region_reference,
             RESOLVE_REGION(data->version));
         if (ur == 0 && rr == 0 && !c->data.v) {
             return AT_READ_FAIL;

src/kernel/curse.h

@@ -196,8 +196,8 @@ extern "C" {
         struct message *(*curseinfo) (const void *, objtype_t,
             const struct curse *, int);
         void(*change_vigour) (struct curse *, double);
-        int(*read) (struct storage * store, struct curse *, void *target);
-        int(*write) (struct storage * store, const struct curse *,
+        int(*read) (struct gamedata *data, struct curse *, void *target);
+        int(*write) (struct storage *store, const struct curse *,
             const void *target);
         int(*cansee) (const struct faction *, const void *, objtype_t,
             const struct curse *, int);

src/kernel/curse.test.c

@@ -135,8 +135,6 @@ static void test_write_flag(CuTest *tc) {
     data.strm.api->rewind(data.strm.handle);
     curse_read(fix.r->attribs, fix.r, &data);
     CuAssertIntEquals(tc, 42 | CURSE_ISNEW, ((curse *) fix.r->attribs->data.v)->flags);
-    global.data_version = RELEASE_VERSION; // FIXME: should not need this!
-    CuAssertIntEquals(tc, RELEASE_VERSION, global.data_version);
 
     mstream_done(&data.strm);
     gamedata_done(&data);

src/kernel/faction.c

@@ -325,10 +325,10 @@ bool checkpasswd(const faction * f, const char *passwd)
     return true;
 }
 
-variant read_faction_reference(struct storage * store)
+variant read_faction_reference(gamedata * data)
 {
     variant id;
-    READ_INT(store, &id.i);
+    READ_INT(data->store, &id.i);
     return id;
 }
 

src/kernel/faction.h

@@ -133,7 +133,7 @@ extern "C" {
 
     void write_faction_reference(const struct faction *f,
         struct storage *store);
-    variant read_faction_reference(struct storage *store);
+    variant read_faction_reference(struct gamedata *store);
     int resolve_faction(variant data, void *addr);
 
     void renumber_faction(faction * f, int no);

src/kernel/group.c

@@ -236,7 +236,7 @@ void read_groups(gamedata *data, faction * f)
             ally *a;
             variant fid;
 
-            fid = read_faction_reference(store);
+            fid = read_faction_reference(data);
             if (fid.i <= 0)
                 break;
             a = ally_add(pa, findfaction(fid.i));

src/kernel/region.c

@@ -1226,10 +1226,11 @@ int resolve_region_id(variant id, void *address)
     return 0;
 }
 
-variant read_region_reference(struct storage * store)
+variant read_region_reference(gamedata *data)
 {
+    struct storage * store = data->store;
     variant result;
-    if (global.data_version < UIDHASH_VERSION) {
+    if (data->version < UIDHASH_VERSION) {
         int n;
         READ_INT(store, &n);
         result.sa[0] = (short)n;

src/kernel/region.h

@@ -255,7 +255,7 @@ extern "C" {
     void region_set_morale(region * r, int morale, int turn);
 
     void write_region_reference(const struct region *r, struct storage *store);
-    variant read_region_reference(struct storage *store);
+    variant read_region_reference(struct gamedata *data);
     int resolve_region_coor(variant id, void *address);
     int resolve_region_id(variant id, void *address);
 #define RESOLVE_REGION(version) ((version<UIDHASH_VERSION)?resolve_region_coor:resolve_region_id)

src/kernel/save.c

@@ -441,7 +441,7 @@ static void read_alliances(struct gamedata *data)
             READ_INT(store, &al->flags);
         }
         if (data->version >= ALLIANCELEADER_VERSION) {
-            read_reference(&al->_leader, store, read_faction_reference,
+            read_reference(&al->_leader, data, read_faction_reference,
                 resolve_faction);
             READ_INT(store, &id);
         }
@@ -528,7 +528,7 @@ static void read_owner(struct gamedata *data, region_owner ** powner)
         else {
             owner->last_owner = NULL;
         }
-        read_reference(owner, data->store, &read_faction_reference, &resolve_owner);
+        read_reference(owner, data, &read_faction_reference, &resolve_owner);
         *powner = owner;
     }
     else {
@@ -1579,9 +1579,9 @@ int readgame(const char *filename, bool backup)
         else {
             /* WATCHERS - eliminated in February 2016, ca. turn 966 */
             if (gdata.version < NOWATCH_VERSION) {
-                fno = read_faction_reference(&store);
+                fno = read_faction_reference(&gdata);
                 while (fno.i) {
-                    fno = read_faction_reference(&store);
+                    fno = read_faction_reference(&gdata);
                 }
             }
         }

src/kernel/unit.c

@@ -117,9 +117,9 @@ unit *findunitr(const region * r, int n)
 {
     unit *u;
     /* findunit regional! */
-    assert(n>0);
+    assert(n > 0);
     u = ufindhash(n);
-    return (u && u->region==r)?u:0;
+    return (u && u->region == r) ? u : 0;
 }
 
 // TODO: deprecated, replace with findunit(n)
@@ -583,8 +583,7 @@ void a_writesiege(const attrib * a, const void *owner, struct storage *store)
 
 int a_readsiege(attrib * a, void *owner, gamedata *data)
 {
-    struct storage *store = data->store;
-    int result = read_reference(&a->data.v, store, read_building_reference,
+    int result = read_reference(&a->data.v, data, read_building_reference,
         resolve_building);
     if (result == 0 && !a->data.v) {
         return AT_READ_FAIL;
@@ -659,7 +658,7 @@ bool ucontact(const unit * u, const unit * u2)
 
     /* Explizites KONTAKTIERE */
     for (ru = a_find(u->attribs, &at_contact); ru && ru->type == &at_contact;
-        ru = ru->next) {
+    ru = ru->next) {
         if (((unit *)ru->data.v) == u2) {
             return true;
         }
@@ -701,10 +700,10 @@ int resolve_unit(variant id, void *address)
     return 0;
 }
 
-variant read_unit_reference(struct storage * store)
+variant read_unit_reference(gamedata *data)
 {
     variant var;
-    READ_INT(store, &var.i);
+    READ_INT(data->store, &var.i);
     return var;
 }
 
@@ -833,7 +832,7 @@ bool can_leave(unit * u)
 
     rule_leave = config_get_int("rules.move.owner_leave", 0);
 
-    if (rule_leave!=0 && u->building && u == building_owner(u->building)) {
+    if (rule_leave != 0 && u->building && u == building_owner(u->building)) {
         return false;
     }
     return true;
@@ -1004,7 +1003,7 @@ void transfermen(unit * u, unit * dst, int n)
             set_leftship(dst, sh);
         dst->flags |=
             u->flags & (UFL_LONGACTION | UFL_NOTMOVING | UFL_HUNGER | UFL_MOVED |
-            UFL_ENTER);
+                UFL_ENTER);
         if (u->attribs) {
             transfer_curse(u, dst, n);
         }
@@ -1135,8 +1134,8 @@ bool learn_skill(unit * u, skill_t sk, double learn_chance)
 {
     skill *sv = u->skills;
     if (learn_chance < 1.0 && rng_int() % 10000 >= learn_chance * 10000)
-    if (!chance(learn_chance))
-        return false;
+        if (!chance(learn_chance))
+            return false;
     while (sv != u->skills + u->skill_size) {
         assert(sv->weeks > 0);
         if (sv->id == sk) {
@@ -1283,7 +1282,8 @@ static int att_modification(const unit * u, skill_t sk)
                 bool allied = alliedunit(c->magician, u->faction, HELP_GUARD);
                 if (allied) {
                     if (effect > bonus) bonus = effect;
-                } else {
+                }
+                else {
                     if (effect < malus) malus = effect;
                 }
             }
@@ -1332,7 +1332,7 @@ int eff_skill(const unit * u, const skill *sv, const region *r)
 {
     assert(u);
     if (!r) r = u->region;
-    if (sv && sv->level>0) {
+    if (sv && sv->level > 0) {
         int mlevel = sv->level + get_modifier(u, sv->id, sv->level, r, false);
 
         if (mlevel > 0) {
@@ -1421,10 +1421,10 @@ void default_name(const unit *u, char name[], int len) {
         static const char * prefix[MAXLOCALES];
         int i = locale_index(lang);
         /*if (!prefix[i]) {*/
-            prefix[i] = LOC(lang, "unitdefault");
-            if (!prefix[i]) {
-                prefix[i] = parameters[P_UNIT];
-            }
+        prefix[i] = LOC(lang, "unitdefault");
+        if (!prefix[i]) {
+            prefix[i] = parameters[P_UNIT];
+        }
         /*}*/
         result = prefix[i];
     }
@@ -1736,7 +1736,7 @@ void scale_number(unit * u, int n)
     }
     if (u->number > 0) {
         for (a = a_find(u->attribs, &at_effect); a && a->type == &at_effect;
-            a = a->next) {
+        a = a->next) {
             effect_data *data = (effect_data *)a->data.v;
             int snew = data->value / u->number * n;
             if (n) {
@@ -1896,7 +1896,7 @@ static double produceexp_chance(void) {
     return config_get_flt("study.from_use", 1.0 / 3);
 }
 
-void produceexp_ex(struct unit *u, skill_t sk, int n, bool (*learn)(unit *, skill_t, double))
+void produceexp_ex(struct unit *u, skill_t sk, int n, bool(*learn)(unit *, skill_t, double))
 {
     if (n != 0 && (is_monsters(u->faction) || playerrace(u_race(u)))) {
         double chance = produceexp_chance();

src/kernel/unit.h

@@ -186,7 +186,7 @@ extern "C" {
     /* see resolve.h */
     int resolve_unit(variant data, void *address);
     void write_unit_reference(const struct unit *u, struct storage *store);
-    variant read_unit_reference(struct storage *store);
+    variant read_unit_reference(struct gamedata *data);
 
     bool leave(struct unit *u, bool force);
     bool can_leave(struct unit *u);

src/magic.c

@@ -2287,9 +2287,8 @@ static int resolve_familiar(variant data, void *addr)
 
 static int read_familiar(attrib * a, void *owner, struct gamedata *data)
 {
-    storage *store = data->store;
     int result =
-        read_reference(&a->data.v, store, read_unit_reference, resolve_familiar);
+        read_reference(&a->data.v, data, read_unit_reference, resolve_familiar);
     if (result == 0 && a->data.v == NULL) {
         return AT_READ_FAIL;
     }
@@ -2372,9 +2371,8 @@ static int resolve_clone(variant data, void *addr)
 
 static int read_clone(attrib * a, void *owner, struct gamedata *data)
 {
-    storage *store = data->store;
     int result =
-        read_reference(&a->data.v, store, read_unit_reference, resolve_clone);
+        read_reference(&a->data.v, data, read_unit_reference, resolve_clone);
     if (result == 0 && a->data.v == NULL) {
         return AT_READ_FAIL;
     }
@@ -2400,9 +2398,8 @@ static int resolve_mage(variant data, void *addr)
 
 static int read_magician(attrib * a, void *owner, struct gamedata *data)
 {
-    storage *store = data->store;
     int result =
-        read_reference(&a->data.v, store, read_unit_reference, resolve_mage);
+        read_reference(&a->data.v, data, read_unit_reference, resolve_mage);
     if (result == 0 && a->data.v == NULL) {
         return AT_READ_FAIL;
     }

src/modules/arena.c

@@ -452,7 +452,7 @@ static void caldera_write(const trigger * t, struct storage *store)
 static int caldera_read(trigger * t, struct gamedata *data)
 {
     int rb =
-        read_reference(&t->data.v, data->store, read_building_reference,
+        read_reference(&t->data.v, data, read_building_reference,
         resolve_building);
     if (rb == 0 && !t->data.v) {
         return AT_READ_FAIL;

src/modules/xmas.c

@@ -51,7 +51,7 @@ static void xmasgate_write(const trigger * t, struct storage *store)
 static int xmasgate_read(trigger * t, struct gamedata *data)
 {
     int bc =
-        read_reference(&t->data.v, data->store, read_building_reference,
+        read_reference(&t->data.v, data, read_building_reference,
         resolve_building);
     if (bc == 0 && !t->data.v) {
         return AT_READ_FAIL;

src/spells/alp.c

@@ -79,11 +79,10 @@ alp_write(const attrib * a, const void *owner, struct storage *store)
 
 static int alp_read(attrib * a, void *owner, struct gamedata *data)
 {
-    struct storage *store = data->store;
     alp_data *ad = (alp_data *)a->data.v;
-    int rm = read_reference(&ad->mage, store, read_unit_reference, resolve_unit);
+    int rm = read_reference(&ad->mage, data, read_unit_reference, resolve_unit);
     int rt =
-        read_reference(&ad->target, store, read_unit_reference, resolve_unit);
+        read_reference(&ad->target, data, read_unit_reference, resolve_unit);
     if (rt == 0 && rm == 0 && (!ad->target || !ad->mage)) {
         /* the target or mage disappeared. */
         return AT_READ_FAIL;

src/spells/borders.c

@@ -179,7 +179,7 @@ static void wall_read(connection * b, gamedata * data)
     static wall_data dummy;
     wall_data *fd = b->data.v ? (wall_data *)b->data.v : &dummy;
 
-    read_reference(&fd->mage, data->store, read_unit_reference, resolve_unit);
+    read_reference(&fd->mage, data, read_unit_reference, resolve_unit);
     READ_INT(data->store, &fd->force);
     if (data->version >= NOBORDERATTRIBS_VERSION) {
         READ_INT(data->store, &fd->countdown);

src/spells/flyingship.c

@@ -11,6 +11,8 @@
 #include <kernel/unit.h>
 #include <kernel/ship.h>
 
+#include <util/gamedata.h>
+
 #include <magic.h>
 
 #include <spells/shipcurse.h>
@@ -95,11 +97,11 @@ int sp_flying_ship(castorder * co)
     return cast_level;
 }
 
-static int flyingship_read(storage * store, curse * c, void *target)
+static int flyingship_read(gamedata * data, curse * c, void *target)
 {
     ship *sh = (ship *)target;
     c->data.v = sh;
-    if (global.data_version < FOSS_VERSION) {
+    if (data->version < FOSS_VERSION) {
         sh->flags |= SF_FLYING;
         return 0;
     }

src/spells/unitcurse.c

@@ -25,6 +25,7 @@
 #include <kernel/version.h>
 
 /* util includes */
+#include <util/gamedata.h>
 #include <util/language.h>
 #include <util/nrmessage.h>
 #include <util/message.h>
@@ -307,10 +308,10 @@ static struct curse_type ct_oldrace = {
  * C_SKILL
  */
 
-static int read_skill(struct storage *store, curse * c, void *target)
+static int read_skill(gamedata *data, curse * c, void *target)
 {
     int skill;
-    READ_INT(store, &skill);
+    READ_INT(data->store, &skill);
     c->data.i = skill;
     return 0;
 }

src/triggers/changefaction.c

@@ -88,8 +88,8 @@ static int changefaction_read(trigger * t, gamedata *data)
     variant var;
     changefaction_data *td = (changefaction_data *)t->data.v;
 
-    read_reference(&td->unit, data->store, read_unit_reference, resolve_unit);
-    var = read_faction_reference(data->store);
+    read_reference(&td->unit, data, read_unit_reference, resolve_unit);
+    var = read_faction_reference(data);
     if (var.i == 0) {
         return AT_READ_FAIL;
     }

src/triggers/changerace.c

@@ -90,7 +90,7 @@ static void changerace_write(const trigger * t, struct storage *store)
 static int changerace_read(trigger * t, gamedata *data)
 {
     changerace_data *td = (changerace_data *)t->data.v;
-    read_reference(&td->u, data->store, read_unit_reference, resolve_unit);
+    read_reference(&td->u, data, read_unit_reference, resolve_unit);
     td->race = (const struct race *)read_race_reference(data->store).v;
     td->irace = (const struct race *)read_race_reference(data->store).v;
     return AT_READ_OK;

src/triggers/clonedied.c

@@ -72,7 +72,7 @@ static void clonedied_write(const trigger * t, struct storage *store)
 static int clonedied_read(trigger * t, gamedata *data)
 {
     int result =
-        read_reference(&t->data.v, data->store, read_unit_reference, resolve_unit);
+        read_reference(&t->data.v, data, read_unit_reference, resolve_unit);
     if (result == 0 && t->data.v == NULL) {
         return AT_READ_FAIL;
     }

src/triggers/createcurse.c

@@ -100,8 +100,8 @@ static int createcurse_read(trigger * t, gamedata *data)
     char zText[128];
     float flt;
 
-    read_reference(&td->mage, data->store, read_unit_reference, resolve_unit);
-    read_reference(&td->target, data->store, read_unit_reference, resolve_unit);
+    read_reference(&td->mage, data, read_unit_reference, resolve_unit);
+    read_reference(&td->target, data, read_unit_reference, resolve_unit);
 
     READ_TOK(data->store, zText, sizeof(zText));
     td->type = ct_find(zText);

src/triggers/createunit.c

@@ -94,7 +94,7 @@ static int createunit_read(trigger * t, gamedata *data)
     createunit_data *td = (createunit_data *)t->data.v;
     variant var;
     int result = AT_READ_OK;
-    var = read_faction_reference(data->store);
+    var = read_faction_reference(data);
     if (var.i > 0) {
         td->f = findfaction(var.i);
         if (!td->f) {
@@ -106,7 +106,7 @@ static int createunit_read(trigger * t, gamedata *data)
     }
     // read_reference(&td->f, store, read_faction_reference, resolve_faction);
 
-    read_reference(&td->r, data->store, read_region_reference,
+    read_reference(&td->r, data, read_region_reference,
         RESOLVE_REGION(global.data_version));
     td->race = (const struct race *)read_race_reference(data->store).v;
     if (!td->race) {

src/triggers/gate.c

@@ -13,7 +13,7 @@
 #include <kernel/config.h>
 #include "gate.h"
 
-/* kernel includes */
+ /* kernel includes */
 #include <kernel/building.h>
 #include <kernel/region.h>
 #include <kernel/unit.h>
@@ -78,10 +78,10 @@ static int gate_read(trigger * t, gamedata *data)
     gate_data *gd = (gate_data *)t->data.v;
 
     int bc =
-        read_reference(&gd->gate, data->store, read_building_reference, resolve_building);
+        read_reference(&gd->gate, data, read_building_reference, resolve_building);
     int rc =
-        read_reference(&gd->target, data->store, read_region_reference,
-        RESOLVE_REGION(data->version));
+        read_reference(&gd->target, data, read_region_reference,
+            RESOLVE_REGION(data->version));
 
     if (bc == 0 && rc == 0) {
         if (!gd->gate || !gd->target)

src/triggers/giveitem.c

@@ -88,7 +88,7 @@ static int giveitem_read(trigger * t, gamedata *data)
     giveitem_data *td = (giveitem_data *)t->data.v;
     char zText[128];
 
-    int result = read_reference(&td->u, data->store, read_unit_reference, resolve_unit);
+    int result = read_reference(&td->u, data, read_unit_reference, resolve_unit);
 
     READ_INT(data->store, &td->number);
     READ_TOK(data->store, zText, sizeof(zText));

src/triggers/killunit.c

@@ -61,8 +61,8 @@ static void killunit_write(const trigger * t, struct storage *store)
 
 static int killunit_read(trigger * t, gamedata *data)
 {
-    int result =
-        read_reference(&t->data.v, data->store, read_unit_reference, resolve_unit);
+    int result = read_reference(&t->data.v, data, read_unit_reference,
+        resolve_unit);
     if (result == 0 && t->data.v == NULL) {
         return AT_READ_FAIL;
     }

src/triggers/removecurse.c

@@ -78,12 +78,16 @@ static void removecurse_write(const trigger * t, struct storage *store)
     WRITE_INT(store, td->curse ? td->curse->no : 0);
 }
 
+static variant read_curse_reference(struct gamedata *data) {
+    return read_int(data->store);
+}
+
 static int removecurse_read(trigger * t, gamedata *data)
 {
     removecurse_data *td = (removecurse_data *)t->data.v;
 
-    read_reference(&td->target, data->store, read_unit_reference, resolve_unit);
-    read_reference(&td->curse, data->store, read_int, resolve_curse);
+    read_reference(&td->target, data, read_unit_reference, resolve_unit);
+    read_reference(&td->curse, data, read_curse_reference, resolve_curse);
 
     return AT_READ_OK;
 }

src/triggers/shock.c

@@ -129,7 +129,7 @@ static void shock_write(const trigger * t, struct storage *store)
 static int shock_read(trigger * t, gamedata *data)
 {
     int result =
-        read_reference(&t->data.v, data->store, read_unit_reference, resolve_unit);
+        read_reference(&t->data.v, data, read_unit_reference, resolve_unit);
     if (result == 0 && t->data.v == NULL) {
         return AT_READ_FAIL;
     }

src/triggers/unguard.c

@@ -51,8 +51,7 @@ static void unguard_write(const trigger * t, struct storage *store)
 
 static int unguard_read(trigger * t, gamedata *data)
 {
-    int rb =
-        read_reference(&t->data.v, data->store, read_building_reference,
+    int rb = read_reference(&t->data.v, data, read_building_reference,
         resolve_building);
     if (rb == 0 && !t->data.v) {
         return AT_READ_FAIL;

src/triggers/unitmessage.c

@@ -90,8 +90,8 @@ static int unitmessage_read(trigger * t, gamedata *data)
     unitmessage_data *td = (unitmessage_data *)t->data.v;
     char zText[256];
 
-    int result =
-        read_reference(&td->target, data->store, read_unit_reference, resolve_unit);
+    int result = read_reference(&td->target, data, read_unit_reference,
+        resolve_unit);
     READ_TOK(data->store, zText, sizeof(zText));
     td->string = _strdup(zText);
     READ_INT(data->store, &td->type);

src/util/resolve.c

@@ -45,10 +45,10 @@ variant read_int(struct storage *store)
 }
 
 int
-read_reference(void *address, storage * store, read_fun reader,
-resolve_fun resolver)
+read_reference(void *address, struct gamedata * data, read_fun reader,
+    resolve_fun resolver)
 {
-    variant var = reader(store);
+    variant var = reader(data);
     int result = resolver(var, address);
     if (result != 0) {
         ur_add(var, address, resolver);

src/util/resolve.h

@@ -27,8 +27,8 @@ extern "C" {
 #endif
 
     typedef int(*resolve_fun) (variant data, void *address);
-    typedef variant(*read_fun) (struct storage * store);
-    extern int read_reference(void *address, struct storage *store,
+    typedef variant(*read_fun) (struct gamedata * data);
+    extern int read_reference(void *address, struct gamedata *data,
         read_fun reader, resolve_fun resolver);
 
     extern void ur_add(variant data, void *address, resolve_fun fun);

src/wormhole.c

@@ -121,7 +121,7 @@ static int wormhole_read(struct attrib *a, void *owner, struct gamedata *data)
     if (data->version < ATTRIBOWNER_VERSION) {
         READ_INT(store, NULL);
     }
-    if (read_reference(&a->data.v, store, reader, resolver) == 0) {
+    if (read_reference(&a->data.v, data, reader, resolver) == 0) {
         if (!a->data.v) {
             return AT_READ_FAIL;
         }