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-rw-r--r--src/libstd/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index f7d15f9695c..96665259a4d 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -129,6 +129,7 @@
 #![feature(slice_patterns)]
 #![feature(debug_builders)]
 #![feature(zero_one)]
+#![cfg_attr(test, feature(float_from_str_radix))]
 #![cfg_attr(test, feature(test, rustc_private, std_misc))]
 
 // Don't link to std. We are std.