diff --git a/builtin/builtin.v b/builtin/builtin.v
index b6340e6e28..be512d528d 100644
--- a/builtin/builtin.v
+++ b/builtin/builtin.v
@@ -4,12 +4,8 @@
 
 module builtin
 
-pub fn exit(reason string) {
-	if reason == '' {
-		panic('exit empty reason')
-	}
-	println('exit(): $reason')
-	C.exit(0)
+pub fn exit(code int) {
+	C.exit(1)
 }
 
 // isnil returns true if an object is nil (only for C objects).
diff --git a/compiler/cgen.v b/compiler/cgen.v
index 8962cc828c..1df0e115df 100644
--- a/compiler/cgen.v
+++ b/compiler/cgen.v
@@ -17,8 +17,6 @@ struct CGen {
 	fns          []string
 	so_fns       []string
 	consts_init  []string
-	// tmp_lines                        []string
-	// tmp_lines_pos     int
 	lines        []string
 	is_user      bool
 mut:
@@ -30,19 +28,13 @@ mut:
 	is_tmp       bool
 	fn_main      string
 	stash        string
-	// st_start_pos     int
 }
 
 fn new_cgen(out_name_c string) *CGen {
-	// println('NEW CGENN($out_name_c)')
-	// println('$LANG_TMP/$out_name_c')
 	gen := &CGen {
 		out_path: '$TmpPath/$out_name_c'
 		out: os.create_file('$TmpPath/$out_name_c')
 	}
-	for i := 0; i < 10; i++ {
-		// gen.tmp_lines.push('')
-	}
 	return gen
 }
 
@@ -51,7 +43,6 @@ fn (g mut CGen) genln(s string) {
 		return
 	}
 	if g.is_tmp {
-		// if g.tmp_lines_pos > 0 {
 		g.tmp_line = '$g.tmp_line $s\n'
 		return
 	}
@@ -61,16 +52,13 @@ fn (g mut CGen) genln(s string) {
 		g.prev_line = g.cur_line
 		g.cur_line = ''
 	}
-	// g.lines << s
 }
 
 fn (g mut CGen) gen(s string) {
-	// if g.nogen || g.run == RunType.RUN_DECLS {
 	if g.nogen || g.run == RUN_DECLS {
 		return
 	}
 	if g.is_tmp {
-		// if g.tmp_lines_pos > 0 {
 		g.tmp_line = '$g.tmp_line $s'
 	}
 	else {
@@ -82,18 +70,16 @@ fn (g mut CGen) save() {
 	s := g.lines.join('\n')
 	g.out.appendln(s)
 	g.out.close()
-	// os.system('clang-format -i $g.out_path')
 }
 
 fn (g mut CGen) start_tmp() {
 	if g.is_tmp {
 		println(g.tmp_line)
-		os.exit('start_tmp() already started. cur_line="$g.cur_line"')
+		println('start_tmp() already started. cur_line="$g.cur_line"')
+		exit(1)
 	}
 	// kg.tmp_lines_pos++
 	g.tmp_line = ''
-	// g.tmp_lines[g.tmp_lines_pos]  = ''
-	// g.tmp_lines.set(g.tmp_lines_pos, '')
 	g.is_tmp = true
 }
 
@@ -101,15 +87,10 @@ fn (g mut CGen) end_tmp() string {
 	g.is_tmp = false
 	res := g.tmp_line
 	g.tmp_line = ''
-	// g.tmp_lines_pos--
-	// g.tmp_line = g.tmp_lines[g.tmp_lines_pos]
 	return res
 }
 
 fn (g mut CGen) add_placeholder() int {
-	// g.genln('/*placeholder*/')
-	// g.genln('')
-	// return g.lines.len - 1
 	if g.is_tmp {
 		return g.tmp_line.len
 	}
@@ -133,10 +114,10 @@ fn (g mut CGen) set_placeholder(pos int, val string) {
 	// g.genln('')
 }
 
-// /////////////////////
 fn (g mut CGen) add_placeholder2() int {
 	if g.is_tmp {
-		exit('tmp in addp2')
+		println('tmp in addp2')
+		exit(1)
 	}
 	g.lines << ''
 	return g.lines.len - 1
@@ -147,65 +128,16 @@ fn (g mut CGen) set_placeholder2(pos int, val string) {
 		return
 	}
 	if g.is_tmp {
-		exit('tmp in setp2')
+		println('tmp in setp2')
+		exit(1)
 	}
 	g.lines[pos] = val
 }
 
-// /////////////////
-// fn (g mut CGen) cut_lines_after(pos int) string {
-// end := g.lines.len
-// lines := g.lines.slice_fast(pos, end)
-// body := lines.join('\n')
-// g.lines = g.lines.slice_fast(0, pos)
-// return body
-// }
-// fn (g mut CGen) set_prev_line(val string) {
-// g.lines.set(g.lines.len - 3, val)
-// }
-// ////fn (g mut CGen) go_back() {
-// ////g.stash = g.prev_line + g.cur_line
-// g.lines.set(g.lin
-// ////}
-// fn (g mut CGen) end_statement() {
-// last_lines := g.lines.slice_fast(g.st_start_pos, g.lines.len - 1)
-// mut merged := last_lines.join(' ')
-// merged += '/* M $last_lines.len */'
-// merged = merged.replace('\n', '')
-// // zero last N lines instead of deleting them
-// for i := g.st_start_pos; i < g.lines.len; i++ {
-// g.lines.set(i, '')
-// }
-// g.lines.set(g.lines.len - 1, merged)
-// // g.genln('')
-// g.st_start_pos = g.lines.len - 1
-// // os.exitkmerged)
-// }
-// fn (g mut CGen) prepend_type(typ string) {
-// g.cur_line = typ.add(g.cur_line)
-// g.cur_line='!!!'
-// }
 fn (g mut CGen) insert_before(val string) {
-	// g.cur_line = val.add(g.cur_line)
-	// return
-	// val += '/*inserted*/'
 	g.lines.insert(g.lines.len - 1, val)
 }
 
-// fn (g mut CGen) swap_last_lines() {
-// return
-// if g.run == RUN_DECLS {
-// return
-// }
-// i := g.lines.len - 1
-// j := i - 1
-// tmp := g.lines[i]
-// // println('lines i = $tmp')
-// // println('lines j = ${g.lines[j]}')
-// // // os.exit('')
-// g.lines.set(i, g.lines[j])
-// g.lines.set(j, tmp)
-// }
 fn (g mut CGen) register_thread_fn(wrapper_name, wrapper_text, struct_text string) {
 	for arg in g.thread_args {
 		if arg.contains(wrapper_name) {
@@ -216,14 +148,6 @@ fn (g mut CGen) register_thread_fn(wrapper_name, wrapper_text, struct_text strin
 	g.thread_args << wrapper_text
 }
 
-/* 
-fn (g mut CGen) delete_all_after(pos int) {
-	if pos > g.cur_line.len - 1 {
-		return
-	}
-	g.cur_line = g.cur_line.substr(0, pos)
-}
-*/
 fn (c mut V) prof_counters() string {
 	mut res := []string
 	// Global fns
diff --git a/compiler/main.v b/compiler/main.v
index 26dbfbf606..9c4a6af7dc 100644
--- a/compiler/main.v
+++ b/compiler/main.v
@@ -115,10 +115,12 @@ fn main() {
 	if args.contains('fmt') {
 		file := args.last()
 		if !os.file_exists(file) {
-			os.exit1('"$file" does not exist')
+			println('"$file" does not exist')
+			exit(1)
 		}
 		if !file.ends_with('.v') {
-			os.exit1('v fmt can only be used on .v files')
+			println('v fmt can only be used on .v files')
+			exit(1)
 		}
 		println('vfmt is temporarily disabled')
 		return
@@ -136,7 +138,7 @@ fn main() {
 	// Generate the docs and exit
 	if args.contains('doc') {
 		// c.gen_doc_html_for_module(args.last())
-		os.exit('')
+		exit(0)
 	}
 	c.compile()
 }
@@ -380,7 +382,8 @@ string _STR_TMP(const char *fmt, ...) {
 		if ret != 0 {
 			s := os.system(cmd)
 			println(s)
-			os.exit1('ret not 0, exiting')
+			println('ret not 0, exiting')
+			exit(1)
 		}
 	}
 }
@@ -414,7 +417,7 @@ fn (c mut V) cc() {
 		libs = '$TmpPath/vlib/builtin.o'
 		if !os.file_exists(libs) {
 			println('`builtin.o` not found')
-			exit('')
+			exit(1)
 		}
 		for imp in c.table.imports {
 			if imp == 'webview' {
@@ -504,7 +507,7 @@ mut args := ''
 		'/usr/lib/x86_64-linux-gnu/crtn.o')
 		println(ress)
 		if ress.contains('error:') {
-			os.exit1('')
+			os.exit(1)
 		}
 		println('linux cross compilation done. resulting binary: "$c.out_name"')
 	}
@@ -585,7 +588,8 @@ fn (c mut V) add_user_v_files() {
 		}
 	}
 	if user_files.len == 0 {
-		exit('No input .v files')
+		println('No input .v files')
+		exit(1)
 	}
 	if c.is_verbose {
 		c.log('user_files:')
@@ -703,7 +707,8 @@ fn new_v(args[]string) *V {
 	is_test := dir.ends_with('_test.v')
 	is_script := dir.ends_with('.v')
 	if is_script && !os.file_exists(dir) {
-		exit('`$dir` does not exist')
+		println('`$dir` does not exist')
+		exit(1)
 	}
 	// No -o provided? foo.v => foo
 	if out_name == 'a.out' && dir.ends_with('.v') {
diff --git a/compiler/scanner.v b/compiler/scanner.v
index 27a85d8489..ee408f62b2 100644
--- a/compiler/scanner.v
+++ b/compiler/scanner.v
@@ -456,14 +456,13 @@ fn (s mut Scanner) scan() ScanRes {
 }
 
 fn (s &Scanner) error(msg string) {
-	// println('!! SCANNER ERROR: $msg')
 	file := s.file_path.all_after('/')
 	println('panic: $file:${s.line_nr + 1}')
 	println(msg)
 	// os.print_backtrace()
 	// println(file)
 	// println(s.file_path)
-	os.exit1(' ')
+	exit(1)
 }
 
 // println('array out of bounds $idx len=$a.len')
diff --git a/compiler/table.v b/compiler/table.v
index e1deb52a16..5eb9d4888e 100644
--- a/compiler/table.v
+++ b/compiler/table.v
@@ -634,7 +634,8 @@ fn (table &Table) cgen_name_type_pair(name, typ string) string {
 	else if typ.starts_with('fn (') {
 		T := table.find_type(typ)
 		if T.name == '' {
-			os.exit1('this should never happen')
+			println('this should never happen')
+			exit(1)
 		}
 		str_args := T.func.str_args(table)
 		return '$T.func.typ (*$name)( $str_args /*FFF*/ )'
diff --git a/os/os.v b/os/os.v
index 452d14a3d8..fe8156e9ba 100644
--- a/os/os.v
+++ b/os/os.v
@@ -315,15 +315,8 @@ pub fn getenv(key string) string {
 	return tos2(s)
 }
 
-fn exit(reason string) {
-	println('exit(): $reason')
-	log(reason)
-	C.exit(0)
-}
-
-fn exit1(reason string) {
-	println('exit(): $reason')
-	C.exit(1)
+fn exit(code int) {
+	C.exit(code)
 }
 
 // `file_exists` returns true if `path` exists.