Unrolled build for rust-lang#116172

Rollup merge of rust-lang#116172 - joboet:recursive_tls_initialization, r=dtolnay Broaden the consequences of recursive TLS initialization This PR updates the documentation of `LocalKey` to clearly disallow the behaviour described in [this comment](rust-lang#110897 (comment)). This allows using `OnceCell` for the lazy initialization of TLS variables, which panics on reentrant initialization instead of updating the value like TLS variables currently do. ``@rustbot`` label T-libs-api r? ``@m-ou-se``
rust-lang-ci · Oct 15, 2023 · 95a092e · 95a092e
2 parents f70779b 559ec69
commit 95a092e
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/library/std/src/thread/local.rs b/library/std/src/thread/local.rs
@@ -29,9 29,9 @@ use crate::fmt;
 /// within a thread, and values that implement [`Drop`] get destructed when a
 /// thread exits. Some caveats apply, which are explained below.
 ///
-/// A `LocalKey`'s initializer cannot recursively depend on itself, and using
-/// a `LocalKey` in this way will cause the initializer to infinitely recurse
-/// on the first call to `with`.
 /// A `LocalKey`'s initializer cannot recursively depend on itself. Using a
 /// `LocalKey` in this way may cause panics, aborts or infinite recursion on
 /// the first call to `with`.
 ///
 /// # Examples
 ///