v2: fix hello world compilation with tcc

vlib/v/gen/cgen.v

@@ -704,8 +704,9 @@ fn (g mut Gen) expr(node ast.Expr) {
 					g.write('new_array($it.exprs.len, $it.exprs.len, sizeof($elem_type_str))')
 				}
 				else {
-					g.write('new_array_from_c_array($it.exprs.len, $it.exprs.len, sizeof($elem_type_str), ')
+					len := it.exprs.len
-					g.writeln('($elem_type_str[]){\t')
+					g.write('new_array_from_c_array($len, $len, sizeof($elem_type_str), ')
+					g.writeln('($elem_type_str[$len]){\t')
 					for expr in it.exprs {
 						g.expr(expr)
 						g.write(', ')

vlib/v/gen/cgen_test.v

@@ -17,10 +17,9 @@ fn test_c_files() {
 	vroot := os.dir(vexe)
 	for i in 1 .. (nr_tests + 1) {
 		path := '$vroot/vlib/v/gen/tests/${i}.vv'
-		mut ctext := os.read_file('$vroot/vlib/v/gen/tests/${i}.c') or {
+		ctext := os.read_file('$vroot/vlib/v/gen/tests/${i}.c') or {
 			panic(err)
 		}
-		ctext = ctext // unused warn
 		mut b := builder.new_builder(pref.Preferences{})
 		b.module_search_paths = ['$vroot/vlib/v/gen/tests/']
 		mut res := b.gen_c([path]).after('#endbuiltin')
@@ -44,7 +43,9 @@ fn compare_texts(a, b, path string) bool {
 	lines_a_ := a.trim_space().split_into_lines()
 	lines_b_ := b.trim_space().split_into_lines()
 	lines_a := lines_a_.filter(it != '')
-	lines_b := lines_b_.filter(it != '')
+	mut lines_b := lines_b_.filter(it != '')
+	lines_b << ''
+	lines_b << ''
 	/*
 	if lines_a.len != lines_b.len {
 		println(term.red('different len'))
@@ -60,9 +61,10 @@ fn compare_texts(a, b, path string) bool {
 		}
 		line_b := lines_b[i]
 		if line_a.trim_space() != line_b.trim_space() {
-			println('${path}: got\n$a')
+			println('${path}: Got\n$a')
-			println('${term_fail} ${i}')
+			println('${term_fail} near line: ${i}')
-			println(term.red('i=$i "$line_a" expected="$line_b"'))
+			println(term.red('actual  :${line_a}'))
+			println(term.red('expected:${line_b}'))
 			println(lines_b[i + 1])
 			println(lines_b[i + 2])
 			// exit(1)

vlib/v/gen/tests/1.c

@@ -75,7 +75,7 @@ void foo(int a) {
 	for (int i = 0;
 i < 10; i++) {
 	}
-	array_int nums = new_array_from_c_array(3, 3, sizeof(int), (int[]){
+	array_int nums = new_array_from_c_array(3, 3, sizeof(int), (int[3]){
 		1, 2, 3,
 	});
 	array_int nums2 = array_slice(nums, 0, 2);
@@ -83,16 +83,16 @@ i < 10; i++) {
 	array_int nums4 = array_slice(nums, 1, nums.len);
 	int number = (*(int*)array_get(nums, 0));
 	array_set(&nums, 1, &(int[]) { 10 });
-	array_bool bools = new_array_from_c_array(2, 2, sizeof(bool), (bool[]){
+	array_bool bools = new_array_from_c_array(2, 2, sizeof(bool), (bool[2]){
 		true, false,
 	});
-	array_User users = new_array_from_c_array(1, 1, sizeof(User), (User[]){
+	array_User users = new_array_from_c_array(1, 1, sizeof(User), (User[1]){
 		(User){
 			.age = 0,
 		},
 	});
 	bool b = (*(bool*)array_get(bools, 0));
-	array_string mystrings = new_array_from_c_array(2, 2, sizeof(string), (string[]){
+	array_string mystrings = new_array_from_c_array(2, 2, sizeof(string), (string[2]){
 		tos3("a"), tos3("b"),
 	});
 	string s = (*(string*)array_get(mystrings, 0));

vlib/v/gen/tests/2.c

@@ -66,7 +66,7 @@ void function2() {
 }
 
 void init_array() {
-	array_int nums = new_array_from_c_array(3, 3, sizeof(int), (int[]){
+	array_int nums = new_array_from_c_array(3, 3, sizeof(int), (int[3]){
 		4, 2, 3,
 	});
 }

vlib/v/gen/tests/3.c

@@ -30,7 +30,7 @@ Option_int get_opt() {
 
 void User_foo(User* u) {
 	int age = u->age;
-	array_string zzz = array_repeat(new_array_from_c_array(1, 1, sizeof(string), (string[]){
+	array_string zzz = array_repeat(new_array_from_c_array(1, 1, sizeof(string), (string[1]){
 tos3(""),
 }), u->age);
 	int a = 10;

vlib/v/gen/tests/4.c

@@ -43,13 +43,13 @@ int main(int argc, char** argv) {
     string e = tos3("hello");
     e = testb(111);
 	e = tos3("world");
-	array_int f = new_array_from_c_array(4, 4, sizeof(int), (int[]){
+	array_int f = new_array_from_c_array(4, 4, sizeof(int), (int[4]){
         testa(), 2, 3, 4,
 	});
-	array_string g = new_array_from_c_array(2, 2, sizeof(string), (string[]){
+	array_string g = new_array_from_c_array(2, 2, sizeof(string), (string[2]){
 		testb(1), tos3("hello"),
 	});
-	array_Foo arr_foo = new_array_from_c_array(1, 1, sizeof(Foo), (Foo[]){
+	array_Foo arr_foo = new_array_from_c_array(1, 1, sizeof(Foo), (Foo[1]){
 		a,
 	});
 	Foo af_idx_el = (*(Foo*)array_get(arr_foo, 0));