Improve documentation of Stack size

diff --git a/library/std/src/thread/mod.rs b/library/std/src/thread/mod.rs
index 05023df1bb24b19e1cc1820b6345baa85f1ffdfc..34bdb8bd4612e600d1ea3bb617bbb555172c4f35 100644 (file)
--- a/library/std/src/thread/mod.rs
+++ b/library/std/src/thread/mod.rs
@@ -124,9 +124,8 @@
 //!
 //! ## Stack size
 //!
-//! The default stack size for spawned threads is 2 MiB, though this particular stack size is
-//! subject to change in the future. There are two ways to manually specify the stack size for
-//! spawned threads:
+//! The default stack size is platform-dependent and subject to change. Currently it is 2MB on all
+//! Tier-1 platforms. There are two ways to manually specify the stack size for spawned threads:
 //!
 //! * Build the thread with [`Builder`] and pass the desired stack size to [`Builder::stack_size`].
 //! * Set the `RUST_MIN_STACK` environment variable to an integer representing the desired stack