diff --git a/vlib/builtin/map.v b/vlib/builtin/map.v
index 42a6ec152c..22651e70fd 100644
--- a/vlib/builtin/map.v
+++ b/vlib/builtin/map.v
@@ -458,7 +458,7 @@ fn (m map) get(key string, zero voidptr) voidptr {
 // If `key` matches the key of an element in the container,
 // the method returns a reference to its mapped value.
 // If not, a zero/default value is returned.
-fn (m map) get_1(key voidptr, zero voidptr) voidptr {
+fn (m &map) get_1(key voidptr, zero voidptr) voidptr {
 	mut index, mut meta := m.key_to_index(key)
 	for {
 		if meta == unsafe {m.metas[index]} {
@@ -482,7 +482,7 @@ fn (m map) exists(key string) bool {
 }
 
 // Checks whether a particular key exists in the map.
-fn (m map) exists_1(key voidptr) bool {
+fn (m &map) exists_1(key voidptr) bool {
 	mut index, mut meta := m.key_to_index(key)
 	for {
 		if meta == unsafe {m.metas[index]} {
diff --git a/vlib/v/gen/cgen.v b/vlib/v/gen/cgen.v
index 1ccd05b2ef..222af09c97 100644
--- a/vlib/v/gen/cgen.v
+++ b/vlib/v/gen/cgen.v
@@ -1714,16 +1714,20 @@ fn (mut g Gen) gen_assign_stmt(assign_stmt ast.AssignStmt) {
 							left_type := assign_stmt.left_types[i]
 							left_sym := g.table.get_type_symbol(left_type)
 							g.write_fn_ptr_decl(left_sym.info as table.FnType, '_var_$left.pos.pos')
-							g.write(' = *(voidptr*)map_get(')
+							g.write(' = *(voidptr*)map_get_1(')
 						} else {
-							g.write('$styp _var_$left.pos.pos = *($styp*)map_get(')
+							g.write('$styp _var_$left.pos.pos = *($styp*)map_get_1(')
 						}
-						if left.left_type.is_ptr() {
-							g.write('*')
+						if !left.left_type.is_ptr() {
+							g.write('ADDR(map, ')
+							g.expr(left.left)
+							g.write(')')
+						} else {
+							g.expr(left.left)
 						}
-						g.expr(left.left)
-						g.write(', ')
+						g.write(', &(string[]){')
 						g.expr(left.index)
+						g.write('}')
 						if val_typ.kind == .function {
 							g.writeln(', &(voidptr[]){ $zero });')
 						} else {
@@ -3843,9 +3847,9 @@ fn (mut g Gen) index_expr(node ast.IndexExpr) {
 				if g.is_assign_lhs && !g.is_array_set && !get_and_set_types {
 					if g.assign_op == .assign || info.value_type == table.string_type {
 						g.is_array_set = true
-						g.write('map_set(')
+						g.write('map_set_1(')
 					} else {
-						g.write('*(($elem_type_str*)map_get_and_set(')
+						g.write('*(($elem_type_str*)map_get_and_set_1(')
 					}
 					if !left_is_ptr || node.left_type.has_flag(.shared_f) {
 						g.write('&')
@@ -3858,8 +3862,9 @@ fn (mut g Gen) index_expr(node ast.IndexExpr) {
 							g.write('.val')
 						}
 					}
-					g.write(', ')
+					g.write(', &(string[]){')
 					g.expr(node.index)
+					g.write('}')
 					if elem_typ.kind == .function {
 						g.write(', &(voidptr[]) { ')
 					} else {
@@ -3872,31 +3877,34 @@ fn (mut g Gen) index_expr(node ast.IndexExpr) {
 				} else if (g.inside_map_postfix || g.inside_map_infix) ||
 					(g.is_assign_lhs && !g.is_array_set && get_and_set_types) {
 					zero := g.type_default(info.value_type)
-					g.write('(*($elem_type_str*)map_get_and_set(')
+					g.write('(*($elem_type_str*)map_get_and_set_1(')
 					if !left_is_ptr {
 						g.write('&')
 					}
 					g.expr(node.left)
-					g.write(', ')
+					g.write(', &(string[]){')
 					g.expr(node.index)
-					g.write(', &($elem_type_str[]){ $zero }))')
+					g.write('}, &($elem_type_str[]){ $zero }))')
 				} else {
 					zero := g.type_default(info.value_type)
 					if g.is_fn_index_call {
 						if elem_typ.info is table.FnType {
 							g.write('((')
 							g.write_fn_ptr_decl(&elem_typ.info, '')
-							g.write(')(*(voidptr*)map_get(')
+							g.write(')(*(voidptr*)map_get_1(')
 						}
 					} else if elem_typ.kind == .function {
-						g.write('(*(voidptr*)map_get(')
+						g.write('(*(voidptr*)map_get_1(')
 					} else {
-						g.write('(*($elem_type_str*)map_get(')
+						g.write('(*($elem_type_str*)map_get_1(')
 					}
-					if node.left_type.is_ptr() && !node.left_type.has_flag(.shared_f) {
-						g.write('*')
+					if !left_is_ptr || node.left_type.has_flag(.shared_f) {
+						g.write('ADDR(map, ')
+						g.expr(node.left)
+					} else {
+						g.write('(')
+						g.expr(node.left)
 					}
-					g.expr(node.left)
 					if node.left_type.has_flag(.shared_f) {
 						if left_is_ptr {
 							g.write('->val')
@@ -3904,8 +3912,9 @@ fn (mut g Gen) index_expr(node ast.IndexExpr) {
 							g.write('.val')
 						}
 					}
-					g.write(', ')
+					g.write('), &(string[]){')
 					g.expr(node.index)
+					g.write('}')
 					if g.is_fn_index_call {
 						g.write(', &(voidptr[]){ $zero })))')
 					} else if elem_typ.kind == .function {
@@ -4546,14 +4555,14 @@ fn (mut g Gen) gen_map_equality_fn(left table.Type) string {
 				g.definitions.write(', ')
 			}
 		}
-		g.definitions.writeln(') = (*(voidptr*)map_get(a, k, &(voidptr[]){ 0 }));')
+		g.definitions.writeln(') = (*(voidptr*)map_get_1(&a, &k, &(voidptr[]){ 0 }));')
 	} else {
-		g.definitions.writeln('\t\t$value_typ v = (*($value_typ*)map_get(a, k, &($value_typ[]){ 0 }));')
+		g.definitions.writeln('\t\t$value_typ v = (*($value_typ*)map_get_1(&a, &k, &($value_typ[]){ 0 }));')
 	}
 	match value_sym.kind {
-		.string { g.definitions.writeln('\t\tif (!map_exists(b, k) || string_ne((*($value_typ*)map_get(b, k, &($value_typ[]){_SLIT("")})), v)) {') }
-		.function { g.definitions.writeln('\t\tif (!map_exists(b, k) || (*(voidptr*)map_get(b, k, &(voidptr[]){ 0 })) != v) {') }
-		else { g.definitions.writeln('\t\tif (!map_exists(b, k) || (*($value_typ*)map_get(b, k, &($value_typ[]){ 0 })) != v) {') }
+		.string { g.definitions.writeln('\t\tif (!map_exists(b, k) || string_ne((*(string*)map_get_1(&b, &k, &(string[]){_SLIT("")})), v)) {') }
+		.function { g.definitions.writeln('\t\tif (!map_exists(b, k) || (*(voidptr*)map_get_1(&b, &k, &(voidptr[]){ 0 })) != v) {') }
+		else { g.definitions.writeln('\t\tif (!map_exists(b, k) || (*($value_typ*)map_get_1(&b, &k, &($value_typ[]){ 0 })) != v) {') }
 	}
 	g.definitions.writeln('\t\t\treturn false;')
 	g.definitions.writeln('\t\t}')
diff --git a/vlib/v/gen/cheaders.v b/vlib/v/gen/cheaders.v
index b3a4b17459..cb01218ac5 100644
--- a/vlib/v/gen/cheaders.v
+++ b/vlib/v/gen/cheaders.v
@@ -269,6 +269,8 @@ static void* g_live_info = NULL;
 //#define tos4(s, slen) ((string){.str=(s), .len=(slen)})
 // `"" s` is used to enforce a string literal argument
 #define _SLIT(s) ((string){.str=(byteptr)("" s), .len=(sizeof(s)-1), .is_lit=1})
+// take the address of an rvalue
+#define ADDR(type, expr) (&((type[]){expr}[0]))
 #define _PUSH_MANY(arr, val, tmp, tmp_typ) {tmp_typ tmp = (val); array_push_many(arr, tmp.data, tmp.len);}
 #define _IN(typ, val, arr) array_##typ##_contains(arr, val)
 #define _IN_MAP(val, m) map_exists(m, val)
diff --git a/vlib/v/gen/json.v b/vlib/v/gen/json.v
index 7ed319fe6d..11b4c98134 100644
--- a/vlib/v/gen/json.v
+++ b/vlib/v/gen/json.v
@@ -263,7 +263,8 @@ fn (mut g Gen) decode_map(key_type table.Type, value_type table.Type) string {
 	cJSON_ArrayForEach(jsval, root)
 	{
 		$s
-		map_set(&res, tos2( (byteptr) jsval->string ) , &val );
+		string key = tos2( (byteptr) jsval->string );
+		map_set_1(&res, &key, &val);
 	}
 '
 }
@@ -286,7 +287,7 @@ fn (mut g Gen) encode_map(key_type table.Type, value_type table.Type) string {
 	array_$styp $keys_tmp = map_keys(&val);
 	for (int i = 0; i < ${keys_tmp}.len; ++i) {
 		$key
-		cJSON_AddItemToObject(o, (char*) key.str, $fn_name_v ( *($styp_v*) map_get(val, key, &($styp_v[]) { $zero } ) ) );
+		cJSON_AddItemToObject(o, (char*) key.str, $fn_name_v ( *($styp_v*) map_get_1(&val, &key, &($styp_v[]) { $zero } ) ) );
 	}
 	array_free(&$keys_tmp);
 '
diff --git a/vlib/v/tests/maps_equal_test.v b/vlib/v/tests/maps_equal_test.v
new file mode 100644
index 0000000000..adcb14e8ec
--- /dev/null
+++ b/vlib/v/tests/maps_equal_test.v
@@ -0,0 +1,9 @@
+fn test_string_int() {
+	mut m := {'hi':4}
+	m2:= {'hi':5}
+	assert m != m2
+	m['hi']++
+	assert m == m2
+	m.delete('hi')
+	assert m != m2
+}