Add preamable on rustc-attrs doc discussion

2020-06-28 21:47:58 +08:00 · 2020-06-28 21:47:58 +08:00 · 0e6f1093be
commit 0e6f1093be
parent 725918f17e
1 changed files with 3 additions and 0 deletions
--- a/src/doc/unstable-book/src/language-features/rustc-attrs.md
+++ b/src/doc/unstable-book/src/language-features/rustc-attrs.md
@ -3,6 +3,9 @@
 This feature has no tracking issue, and is therefore internal to
 the compiler, not being intended for general use.

+Note: `rustc_attrs` enables many rustc-internal attributes and this page
+only discuss a few of them.
+
 ------------------------

 The `rustc_attrs` feature allows debugging rustc type layouts by using