v.builder: use os.write_file/os.write_file_array for writing full files to disk.

vlib/v/builder/c.v

@@ -21,14 +21,11 @@ pub fn (mut b Builder) build_c(v_files []string, out_file string) {
 	b.pref.out_name_c = os.real_path(out_file)
 	b.info('build_c($out_file)')
 	output2 := b.gen_c(v_files)
-	mut f := os.create(out_file) or { panic(err) }
+	os.write_file(out_file, output2) or { panic(err) }
-	f.writeln(output2) or { panic(err) }
-	f.close()
 	if b.pref.is_stats {
 		b.stats_lines = output2.count('\n') + 1
 		b.stats_bytes = output2.len
 	}
-	// os.write_file(out_file, b.gen_c(v_files))
 }
 
 pub fn (mut b Builder) compile_c() {

vlib/v/builder/js.v

@@ -17,13 +17,11 @@ pub fn (mut b Builder) build_js(v_files []string, out_file string) {
 	b.out_name_js = out_file
 	b.info('build_js($out_file)')
 	output := b.gen_js(v_files)
-	mut f := os.create(out_file) or { panic(err) }
+	os.write_file(out_file, output) or { panic(err) }
-	f.writeln(output) or { panic(err) }
 	if b.pref.is_stats {
 		b.stats_lines = output.count('\n') + 1
 		b.stats_bytes = output.len
 	}
-	f.close()
 }
 
 pub fn (mut b Builder) compile_js() {

vlib/v/gen/native/gen.v

@@ -113,10 +113,8 @@ pub fn (mut g Gen) generate_header() {
 
 pub fn (mut g Gen) create_executable() {
 	// Create the binary // should be .o ?
-	mut f := os.create(g.out_name) or { panic(err) }
+	os.write_file_array(g.out_name, g.buf) or { panic(err) }
 	os.chmod(g.out_name, 0o775) // make it executable
-	unsafe { f.write_ptr(g.buf.data, g.buf.len) }
-	f.close()
 	if g.pref.is_verbose {
 		println('\n$g.out_name: native binary has been successfully generated')
 	}