diff --git a/vlib/os/os.v b/vlib/os/os.v
index 739983c06a..15d0847722 100644
--- a/vlib/os/os.v
+++ b/vlib/os/os.v
@@ -293,16 +293,6 @@ pub fn open_append(path string) ?File {
 	return file
 }
 
-// convert any value to []byte (LittleEndian) and write it
-// for example if we have write(7, 4), "07 00 00 00" gets written
-// write(0x1234, 2) => "34 12"
-pub fn (f mut File) write_bytes(data voidptr, size int) {
-	$if linux {
-		C.syscall(sys_write, f.fd,  data, 1)
-	} $else {
-		C.fwrite(data, 1, size, f.cfile)
-	}
-}
 
 /*
 pub fn (f mut File) write_bytes_at(data voidptr, size, pos int) {
@@ -324,20 +314,6 @@ pub fn (f mut File) flush() {
 	C.fflush(f.cfile)
 }
 
-pub fn (f mut File) close() {
-	if !f.opened {
-		return
-	}
-	f.opened = false
-	$if linux {
-	//$if linux_or_macos {
-		C.syscall(sys_close, f.fd)
-		return
-	}
-	C.fflush(f.cfile)
-	C.fclose(f.cfile)
-}
-
 // system starts the specified command, waits for it to complete, and returns its code.
 fn vpopen(path string) voidptr {
 	// *C.FILE {
diff --git a/vlib/os/os_nix.v b/vlib/os/os_nix.v
index 6b4ae7aab3..dd03443bef 100644
--- a/vlib/os/os_nix.v
+++ b/vlib/os/os_nix.v
@@ -216,3 +216,29 @@ pub fn symlink(origin, target string) ?bool {
 	if res == 0 { return true }
 	return error(get_error_msg(C.errno))
 }
+
+// convert any value to []byte (LittleEndian) and write it
+// for example if we have write(7, 4), "07 00 00 00" gets written
+// write(0x1234, 2) => "34 12"
+pub fn (f mut File) write_bytes(data voidptr, size int) {
+	$if linux {
+		C.syscall(sys_write, f.fd,  data, 1)
+	} $else {
+		C.fwrite(data, 1, size, f.cfile)
+	}
+}
+
+pub fn (f mut File) close() {
+	if !f.opened {
+		return
+	}
+	f.opened = false
+	$if linux {
+	//$if linux_or_macos {
+		C.syscall(sys_close, f.fd)
+		return
+	}
+	C.fflush(f.cfile)
+	C.fclose(f.cfile)
+}
+
diff --git a/vlib/os/os_windows.v b/vlib/os/os_windows.v
index 125c851f31..afc4bb1fc6 100644
--- a/vlib/os/os_windows.v
+++ b/vlib/os/os_windows.v
@@ -340,3 +340,16 @@ pub fn symlink(origin, target string) ?bool {
 	}
 	return error(get_error_msg(int(C.GetLastError())))
 }
+
+pub fn (f mut File) write_bytes(data voidptr, size int) {
+	C.fwrite(data, 1, size, f.cfile)
+}
+
+pub fn (f mut File) close() {
+	if !f.opened {
+		return
+	}
+	f.opened = false
+	C.fflush(f.cfile)
+	C.fclose(f.cfile)
+}
diff --git a/vlib/v/gen/cgen_test.v b/vlib/v/gen/cgen_test.v
index 9c7d0a72a1..4494d831dc 100644
--- a/vlib/v/gen/cgen_test.v
+++ b/vlib/v/gen/cgen_test.v
@@ -35,8 +35,10 @@ fn test_c_files() {
 }
 
 fn compare_texts(a, b string) bool {
-	lines_a := a.trim_space().split_into_lines()
-	lines_b := b.trim_space().split_into_lines()
+	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 != '')
 	if lines_a.len != lines_b.len {
 		println(term.red('different len'))
 		// return false
@@ -44,7 +46,8 @@ fn compare_texts(a, b string) bool {
 	for i, line_a in lines_a {
 		line_b := lines_b[i]
 		if line_a.trim_space() != line_b.trim_space() {
-			println(term.red('!' + line_a))
+			println(term.red('i=$i a="$line_a" b="$line_b"'))
+			// exit(1)
 			return false
 		}
 	}
diff --git a/vlib/v/gen/tests/2.c b/vlib/v/gen/tests/2.c
index c22c351074..47835ab85c 100644
--- a/vlib/v/gen/tests/2.c
+++ b/vlib/v/gen/tests/2.c
@@ -54,6 +54,11 @@ void init_array() {
 	});
 }
 
+void end() {
+
+}
+
+
 int main() {
 	return 0;
 }
diff --git a/vlib/v/gen/tests/2.vv b/vlib/v/gen/tests/2.vv
index 1f6767deba..11e721def0 100644
--- a/vlib/v/gen/tests/2.vv
+++ b/vlib/v/gen/tests/2.vv
@@ -53,7 +53,6 @@ fn function2() {
 	j := 0
 }
 
-
 fn init_array() {
 	nums := [1,2,3]