tests: autofree tmp expr test

vlib/v/tests/valgrind/1.strings_and_arrays.v

@@ -18,11 +18,23 @@ fn foo() {
 fn handle_strings(s, p string) {
 }
 
-fn str_expr() {
+fn str_tmp_expr() {
 	println('a' + 'b') // tmp expression result must be freed
 	handle_strings('c' + 'd', 'e' + 'f')
 }
 
+struct Foo {
+	a int
+	b string
+}
+
+fn str_inter() {
+	a := 10
+	println('a = $a')
+	// foo := Foo{10, 'x' + 'x'}
+	// println('foo = $foo') // TODO
+}
+
 fn str_replace() {
 	s := 'hello world'
 	r := s.replace('hello', 'hi')
@@ -35,7 +47,8 @@ fn str_replace() {
 fn main() {
 	println('start')
 	foo()
-	// str_expr()
+	str_tmp_expr()
+	str_inter()
 	// str_replace()
 	println('end')
 }

vlib/v/tests/valgrind/valgrind_test.v

@@ -43,13 +43,19 @@ fn test_all() {
 	os.mkdir_all(wrkdir)
 	os.chdir(wrkdir)
 	//
-	tests := vtest.filter_vtest_only(files.filter(it.ends_with('.v') && !it.ends_with('_test.v')), {
+	tests := vtest.filter_vtest_only(files.filter(it.ends_with('.v') && !it.ends_with('_test.v')),
+		{
 		basepath: valgrind_test_path
 	})
 	bench.set_total_expected_steps(tests.len)
 	for test in tests {
 		bench.step()
 		exe_filename := '$wrkdir/x'
+		if !test.starts_with('1.') {
+			bench.skip()
+			eprintln(bench.step_message_skip(test))
+			continue
+		}
 		//
 		if test in skip_valgrind_files {
 			$if !noskip ? {