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-rw-r--r--library/std/src/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
index 1c226f9f08f..80f67838ac0 100644
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@@ -273,12 +273,12 @@
 //
 // Language features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(c_unwind))]
 #![feature(alloc_error_handler)]
 #![feature(allocator_internals)]
 #![feature(allow_internal_unsafe)]
 #![feature(allow_internal_unstable)]
 #![feature(asm_experimental_arch)]
-#![feature(c_unwind)]
 #![feature(cfg_sanitizer_cfi)]
 #![feature(cfg_target_thread_local)]
 #![feature(cfi_encoding)]