bjoernager/rust
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rename variable

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This commit is contained in:
Ralf Jung 2021-07-10 14:14:09 +02:00
parent 2750d3ac6a
commit dbc2b55baf
1 changed files with 2 additions and 2 deletions
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4
library/std/src/thread/mod.rs
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@ -999,12 +999,12 @@ impl ThreadId {
static mut COUNTER: u64 = 1; static mut COUNTER: u64 = 1;
unsafe { unsafe {
let _guard = GUARD.lock(); let guard = GUARD.lock();
// If we somehow use up all our bits, panic so that we're not // If we somehow use up all our bits, panic so that we're not
// covering up subtle bugs of IDs being reused. // covering up subtle bugs of IDs being reused.
if COUNTER == u64::MAX { if COUNTER == u64::MAX {
drop(_guard); // in case the panic handler ends up calling `ThreadId::new()`, avoid reentrant lock acquire. drop(guard); // in case the panic handler ends up calling `ThreadId::new()`, avoid reentrant lock acquire.
panic!("failed to generate unique thread ID: bitspace exhausted"); panic!("failed to generate unique thread ID: bitspace exhausted");
} }