diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index 0e3986d5b1..6683423dfc 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -216,6 +216,10 @@ pub fn (c mut Checker) call_expr(call_expr ast.CallExpr) table.Type {
 	else if !f.is_variadic && call_expr.args.len > f.args.len {
 		c.error('too many arguments in call to `$fn_name` ($call_expr.args.len instead of $f.args.len)', call_expr.pos)
 	}
+	// println can print anything
+	if fn_name == 'println' {
+		return f.return_type
+	}
 	for i, arg_expr in call_expr.args {
 		arg := if f.is_variadic && i >= f.args.len - 1 { f.args[f.args.len - 1] } else { f.args[i] }
 		c.expected_type = arg.typ
@@ -666,9 +670,7 @@ pub fn (c mut Checker) match_expr(node mut ast.MatchExpr) table.Type {
 			typ := c.expr(match_expr)
 			typ_sym := c.table.get_type_symbol(typ)
 			// TODO:
-			if typ_sym.kind == .sum_type {
-			
-			}
+			if typ_sym.kind == .sum_type {}
 		}
 		c.stmts(block.stmts)
 		// If the last statement is an expression, return its type
@@ -766,8 +768,7 @@ pub fn (c mut Checker) index_expr(node ast.IndexExpr) table.Type {
 		index_type := c.expr(node.index)
 		index_type_sym := c.table.get_type_symbol(index_type)
 		// println('index expr left=$typ_sym.name $node.pos.line_nr')
-		if typ_sym.kind == .array &&
-		(!(table.type_idx(index_type) in table.number_idxs) && index_type_sym.kind != .enum_) {
+		if typ_sym.kind == .array && (!(table.type_idx(index_type) in table.number_idxs) && index_type_sym.kind != .enum_) {
 			c.error('non-integer index (type `$typ_sym.name`)', node.pos)
 		}
 		else if typ_sym.kind == .map && table.type_idx(index_type) != table.string_type_idx {
diff --git a/vlib/v/gen/cgen.v b/vlib/v/gen/cgen.v
index dabd918d3d..379fcb8b49 100644
--- a/vlib/v/gen/cgen.v
+++ b/vlib/v/gen/cgen.v
@@ -86,7 +86,10 @@ fn (g mut Gen) stmt(node ast.Stmt) {
 			}
 			else {
 				type_sym := g.table.get_type_symbol(it.typ)
-				name := it.name.replace('.', '__')
+				mut name := it.name.replace('.', '__')
+				if it.is_method {
+					name = g.table.get_type_symbol(it.receiver.typ).name + '_' + name
+				}
 				g.write('$type_sym.name ${name}(')
 				g.definitions.write('$type_sym.name ${name}(')
 			}
diff --git a/vlib/v/gen/tests/1.c b/vlib/v/gen/tests/1.c
index 00b9a2ea04..3702984faf 100644
--- a/vlib/v/gen/tests/1.c
+++ b/vlib/v/gen/tests/1.c
@@ -1,4 +1,5 @@
 void foo(int a);
+void User_inc_age(int n);
 int get_int(string a);
 bool get_bool();
 int get_int2();
@@ -74,6 +75,10 @@ i < 10; i++;
 	int f = TODO_first(nums);
 }
 
+void User_inc_age(int n) {
+	u.age += n;
+}
+
 int get_int(string a) {
 	return 10;
 }
@@ -91,13 +96,17 @@ void myuser() {
 	int x = 1;
 	int q = x | 4100;
 	User user = (User){
-		.age = 10,
+		.age = 30,
 	};
 	int age = user.age + 1;
 	int boo = 2;
 	int boo2 = boo + 1;
 	bool b = age > 0;
 	bool b2 = user.age > 0;
+	User user2 = (User){
+		.age = 20,
+	};
+	user2.age = 20 + boo;
 }
 
 multi_return_int_string multi_return() {
diff --git a/vlib/v/gen/tests/1.vv b/vlib/v/gen/tests/1.vv
index 94c1e35aa2..b250b0a3d8 100644
--- a/vlib/v/gen/tests/1.vv
+++ b/vlib/v/gen/tests/1.vv
@@ -83,6 +83,10 @@ fn foo(a int) {
 	//println(cloned1 == 1)
 }
 
+fn (u mut User) inc_age(n int) {
+	u.age += n
+}
+
 fn get_int(a string) int {
 	return 10
 }
@@ -100,12 +104,14 @@ fn get_int2() int {
 fn myuser() {
 	x := 1
 	q := x | 0x1004
-	user := User{age:10}
+	user := User{age:30}
 	age := user.age + 1 // crash here
 	boo := 2
 	boo2 := boo+1
 	b := age > 0
 	b2 := user.age > 0
+	mut user2 := User{age:20}
+	user2.age = 20 + boo
 }
 
 fn multi_return() (int,string) {
diff --git a/vlib/v/gen/tests/4.c b/vlib/v/gen/tests/4.c
index 9e876de5df..22870f62ea 100644
--- a/vlib/v/gen/tests/4.c
+++ b/vlib/v/gen/tests/4.c
@@ -2,9 +2,9 @@ multi_return_int_string mr_test();
 int testa();
 string testb(int a);
 int testc(int a);
-int testa();
-int testb();
-int testa();
+int Foo_testa();
+int Foo_testb();
+int Bar_testa();
 
 int main() {
     Bar b = (Bar){
@@ -55,17 +55,17 @@ int testc(int a) {
     return a;
 }
 
-int testa() {
+int Foo_testa() {
     int a = TODO_testb(f);
     a = 1;
     return 4;
 }
 
-int testb() {
+int Foo_testb() {
     return 4;
 }
 
-int testa() {
+int Bar_testa() {
     return 4;
 }
 
diff --git a/vlib/v/gen/x64/gen.v b/vlib/v/gen/x64/gen.v
index 6dbd8bf6e7..420b022220 100644
--- a/vlib/v/gen/x64/gen.v
+++ b/vlib/v/gen/x64/gen.v
@@ -246,6 +246,9 @@ pub fn (g mut Gen) gen_print_from_expr(expr ast.Expr) {
 }
 
 pub fn (g mut Gen) gen_print(s string) {
+	//
+	qq := s + '\n'
+	//
 	g.strings << s + '\n'
 	// g.string_addr[s] = str_pos
 	g.mov(.eax, 1)
diff --git a/vlib/v/table/table.v b/vlib/v/table/table.v
index 003e7bcb5c..7f0545e05b 100644
--- a/vlib/v/table/table.v
+++ b/vlib/v/table/table.v
@@ -255,25 +255,20 @@ pub fn (t &Table) known_type(name string) bool {
 [inline]
 pub fn (t &Table) array_name(elem_type Type, nr_dims int) string {
 	elem_type_sym := t.get_type_symbol(elem_type)
-	return 'array_${elem_type_sym.name}'
-		+ if type_is_ptr(elem_type) { '_ptr' } else { '' }
-		+ if nr_dims > 1 { '_${nr_dims}d' } else { '' }
+	return 'array_${elem_type_sym.name}' + if type_is_ptr(elem_type) { '_ptr' } else { '' } + if nr_dims > 1 { '_${nr_dims}d' } else { '' }
 }
 
 [inline]
 pub fn (t &Table) array_fixed_name(elem_type Type, size int, nr_dims int) string {
 	elem_type_sym := t.get_type_symbol(elem_type)
-	return 'array_fixed_${elem_type_sym.name}_${size}'
-		+ if type_is_ptr(elem_type) { '_ptr' } else { '' }
-		+ if nr_dims > 1 { '_${nr_dims}d' } else { '' }
+	return 'array_fixed_${elem_type_sym.name}_${size}' + if type_is_ptr(elem_type) { '_ptr' } else { '' } + if nr_dims > 1 { '_${nr_dims}d' } else { '' }
 }
 
 [inline]
 pub fn (t &Table) map_name(key_type Type, value_type Type) string {
 	key_type_sym := t.get_type_symbol(key_type)
 	value_type_sym := t.get_type_symbol(value_type)
-	return 'map_${key_type_sym.name}_${value_type_sym.name}'
-		+ if type_is_ptr(value_type) { '_ptr' } else { '' }
+	return 'map_${key_type_sym.name}_${value_type_sym.name}' + if type_is_ptr(value_type) { '_ptr' } else { '' }
 }
 
 pub fn (t mut Table) find_or_register_map(key_type, value_type Type) int {
@@ -382,6 +377,9 @@ pub fn (t &Table) check(got, expected Type) bool {
 	if exp_type_sym.kind == .voidptr {
 		return true
 	}
+	// if got_type_sym.kind == .array_fixed {
+	// return true
+	// }
 	if got_type_sym.kind in [.voidptr, .byteptr, .charptr, .int] && exp_type_sym.kind in [.voidptr, .byteptr, .charptr] {
 		return true
 	}
@@ -393,8 +391,7 @@ pub fn (t &Table) check(got, expected Type) bool {
 		return true
 	}
 	// allow enum value to be used as int
-	if (got_type_sym.is_int() && exp_type_sym.kind == .enum_) ||
-	(exp_type_sym.is_int() && got_type_sym.kind == .enum_) {
+	if (got_type_sym.is_int() && exp_type_sym.kind == .enum_) || (exp_type_sym.is_int() && got_type_sym.kind == .enum_) {
 		return true
 	}
 	// TODO