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Reject byte if it cannot start a valid UTF-8 sequence.

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Count Count 2021-03-24 07:05:17 +01:00
parent 0202273d40
commit d114694042
1 changed files with 2 additions and 1 deletions
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3
library/std/src/sys/windows/stdio.rs
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@ -128,7 +128,8 @@ fn write(
let utf8 = match str::from_utf8(&data[..len]) {
Ok(s) => s,
Err(ref e) if e.valid_up_to() == 0 => {
if data.len() < utf8_char_width(data[0]) {
first_byte_char_width = utf8_char_width(data[0]);
if first_byte_char_width > 1 && data.len() < first_byte_char_width {
incomplete_utf8.bytes[0] = data[0];
incomplete_utf8.len = 1;
return Ok(1);