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Document thread builder panics for nul bytes in thread names #44651

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Sep 18, 2017
Merged

Document thread builder panics for nul bytes in thread names #44651

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7 changes: 7 additions & 0 deletions src/libstd/thread/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -287,6 +287,8 @@ impl Builder {
/// Names the thread-to-be. Currently the name is used for identification
/// only in panic messages.
///
/// The name must not contain null bytes (`\0`).
///
/// For more information about named threads, see
/// [this module-level documentation][naming-threads].
///
Expand Down Expand Up @@ -355,6 +357,10 @@ impl Builder {
/// [`io::Result`]: ../../std/io/type.Result.html
/// [`JoinHandle`]: ../../std/thread/struct.JoinHandle.html
///
/// # Panics
///
/// Panics if a thread name was set and it contained null bytes.
///
/// # Examples
///
/// ```
Expand Down Expand Up @@ -941,6 +947,7 @@ pub struct Thread {

impl Thread {
// Used only internally to construct a thread object without spawning
// Panics if the name contains nuls.
pub(crate) fn new(name: Option<String>) -> Thread {
let cname = name.map(|n| {
CString::new(n).expect("thread name may not contain interior null bytes")
Expand Down