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-rw-r--r--src/libcore/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index fa5e90562d8..873059d3ccc 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -63,6 +63,7 @@
 #![feature(associated_type_defaults)]
 #![feature(concat_idents)]
 #![feature(const_fn)]
+#![feature(cfg_target_has_atomic)]
 #![feature(custom_attribute)]
 #![feature(fundamental)]
 #![feature(inclusive_range_syntax)]