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authorOliver Scherer <github35764891676564198441@oli-obk.de>2019-02-03 12:55:00 +0100
committerOliver Scherer <github35764891676564198441@oli-obk.de>2019-02-11 15:08:16 +0100
commitd3c212c5527f901fcb44d59d031695248762c340 (patch)
tree517e224748ab0be13ec54bc99b5f728263152328 /src/liballoc
parent57d7cfc3cf50f0c427ad3043ff09eaef20671320 (diff)
downloadrust-d3c212c5527f901fcb44d59d031695248762c340.tar.gz
rust-d3c212c5527f901fcb44d59d031695248762c340.zip
Require a list of features to allow in `allow_internal_unstable`
Diffstat (limited to 'src/liballoc')
-rw-r--r--src/liballoc/macros.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/liballoc/macros.rs b/src/liballoc/macros.rs
index db91b07fa71..7ae57a8dc79 100644
--- a/src/liballoc/macros.rs
+++ b/src/liballoc/macros.rs
@@ -34,7 +34,8 @@
 #[cfg(not(test))]
 #[macro_export]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[allow_internal_unstable]
+#[cfg_attr(not(stage0), allow_internal_unstable(box_syntax))]
+#[cfg_attr(stage0, allow_internal_unstable)]
 macro_rules! vec {
     ($elem:expr; $n:expr) => (
         $crate::vec::from_elem($elem, $n)