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Deal with invalid UTF-8 from gai_strerror #127583

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Jul 22, 2024
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Deal with invalid UTF-8 from gai_strerror #127583

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5 changes: 3 additions & 2 deletions library/std/src/sys/pal/unix/net.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 4,6 @@ use crate::io::{self, BorrowedBuf, BorrowedCursor, IoSlice, IoSliceMut};
use crate::mem;
use crate::net::{Shutdown, SocketAddr};
use crate::os::unix::io::{AsFd, AsRawFd, BorrowedFd, FromRawFd, IntoRawFd, RawFd};
use crate::str;
use crate::sys::fd::FileDesc;
use crate::sys::pal::unix::IsMinusOne;
use crate::sys_common::net::{getsockopt, setsockopt, sockaddr_to_addr};
Expand Down Expand Up @@ -47,7 46,9 @@ pub fn cvt_gai(err: c_int) -> io::Result<()> {

#[cfg(not(target_os = "espidf"))]
let detail = unsafe {
str::from_utf8(CStr::from_ptr(libc::gai_strerror(err)).to_bytes()).unwrap().to_owned()
// We can't always expect a UTF-8 environment. When we don't get that luxury,
// it's better to give a low-quality error message than none at all.
CStr::from_ptr(libc::gai_strerror(err)).to_string_lossy()
};

#[cfg(target_os = "espidf")]
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