diff options
Diffstat (limited to 'src/libstd/sys/unix/os.rs')
| -rw-r--r-- | src/libstd/sys/unix/os.rs | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs index 6ef9502ba62..3d98b2efdf1 100644 --- a/src/libstd/sys/unix/os.rs +++ b/src/libstd/sys/unix/os.rs @@ -33,9 +33,8 @@ use sys::fd; use vec; const TMPBUF_SZ: usize = 128; -// `ENV_LOCK` is never initialized fully, so this mutex is reentrant! -// Do not use it in a way that might be reentrant, that could lead to -// aliasing `&mut`. +// `ENV_LOCK` is never initialized fully, so it is UB to attempt to +// acquire this mutex reentrantly! static ENV_LOCK: Mutex = Mutex::new(); |