vlib: use malloc_noscan() where possible (#10465)

vlib/builtin/int.v

@@ -42,7 +42,7 @@ fn (nn int) str_l(max int) string {
 			is_neg = true
 		}
 		mut index := max
-		mut buf := malloc(max + 1)
+		mut buf := malloc_noscan(max + 1)
 		buf[index] = 0
 		index--
 
@@ -119,7 +119,7 @@ pub fn (nn u32) str() string {
 			return '0'
 		}
 		max := 12
-		mut buf := malloc(max + 1)
+		mut buf := malloc_noscan(max + 1)
 		mut index := max
 		buf[index] = 0
 		index--
@@ -163,7 +163,7 @@ pub fn (nn i64) str() string {
 			return '0'
 		}
 		max := 20
-		mut buf := malloc(max + 1)
+		mut buf := malloc_noscan(max + 1)
 		mut is_neg := false
 		if n < 0 {
 			n = -n
@@ -210,7 +210,7 @@ pub fn (nn u64) str() string {
 			return '0'
 		}
 		max := 20
-		mut buf := malloc(max + 1)
+		mut buf := malloc_noscan(max + 1)
 		mut index := max
 		buf[index] = 0
 		index--
@@ -423,7 +423,7 @@ pub fn (b byte) str() string {
 // Example: assert byte(97).ascii_str() == 'a'
 pub fn (b byte) ascii_str() string {
 	mut str := string{
-		str: unsafe { malloc(2) }
+		str: unsafe { malloc_noscan(2) }
 		len: 1
 	}
 	unsafe {

vlib/builtin/rune.v

@@ -45,7 +45,7 @@ pub fn (b []byte) clone() []byte {
 // TODO remove this once runes are implemented
 pub fn (b []byte) bytestr() string {
 	unsafe {
-		buf := malloc(b.len + 1)
+		buf := malloc_noscan(b.len + 1)
 		C.memcpy(buf, b.data, b.len)
 		buf[b.len] = 0
 		return tos(buf, b.len)

vlib/builtin/utf8.c.v

@@ -9,7 +9,7 @@ pub fn (_str string) to_wide() &u16 {
 		unsafe {
 			num_chars := (C.MultiByteToWideChar(cp_utf8, 0, &char(_str.str), _str.len,
 				0, 0))
-			mut wstr := &u16(malloc((num_chars + 1) * 2)) // sizeof(wchar_t)
+			mut wstr := &u16(malloc_noscan((num_chars + 1) * 2)) // sizeof(wchar_t)
 			if wstr != 0 {
 				C.MultiByteToWideChar(cp_utf8, 0, &char(_str.str), _str.len, wstr, num_chars)
 				C.memset(&byte(wstr) + num_chars * 2, 0, 2)
@@ -38,7 +38,7 @@ pub fn string_from_wide2(_wstr &u16, len int) string {
 	$if windows {
 		unsafe {
 			num_chars := C.WideCharToMultiByte(cp_utf8, 0, _wstr, len, 0, 0, 0, 0)
-			mut str_to := malloc(num_chars + 1)
+			mut str_to := malloc_noscan(num_chars + 1)
 			if str_to != 0 {
 				C.WideCharToMultiByte(cp_utf8, 0, _wstr, len, &char(str_to), num_chars,
 					0, 0)

vlib/builtin/utf8.v

@@ -11,7 +11,7 @@ pub fn utf8_char_len(b byte) int {
 // utf32 == Codepoint
 pub fn utf32_to_str(code u32) string {
 	unsafe {
-		mut buffer := malloc(5)
+		mut buffer := malloc_noscan(5)
 		return utf32_to_str_no_malloc(code, buffer)
 	}
 }