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-rw-r--r--src/liballoc/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
index 702d7b70cd3..6399be98cd5 100644
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@@ -75,7 +75,7 @@
 #![deny(missing_debug_implementations)]
 
 #![cfg_attr(test, allow(deprecated))] // rand
-#![cfg_attr(not(test), feature(core_float))]
+#![cfg_attr(all(not(test), stage0), feature(float_internals))]
 #![cfg_attr(not(test), feature(exact_size_is_empty))]
 #![cfg_attr(not(test), feature(generator_trait))]
 #![cfg_attr(test, feature(rand, test))]