diff --git a/src/doc/trpl/custom-allocators.md b/src/doc/trpl/custom-allocators.md
index 4fd05e87a7e6..d927eac0751d 100644
--- a/src/doc/trpl/custom-allocators.md
+++ b/src/doc/trpl/custom-allocators.md
@@ -140,6 +140,8 @@ pub extern fn __rust_usable_size(size: usize, _align: usize) -> usize {
 # #[lang = "panic_fmt"] fn panic_fmt() {}
 # #[lang = "eh_personality"] fn eh_personality() {}
 # #[lang = "eh_unwind_resume"] extern fn eh_unwind_resume() {}
+# #[no_mangle] pub extern fn rust_eh_register_frames () {}
+# #[no_mangle] pub extern fn rust_eh_unregister_frames () {}
 ```
 
 After we compile this crate, it can be used as follows:
diff --git a/src/doc/trpl/lang-items.md b/src/doc/trpl/lang-items.md
index cd1cec7a5d0b..76b9f82827bb 100644
--- a/src/doc/trpl/lang-items.md
+++ b/src/doc/trpl/lang-items.md
@@ -54,6 +54,8 @@ fn main(argc: isize, argv: *const *const u8) -> isize {
 #[lang = "eh_personality"] extern fn eh_personality() {}
 #[lang = "panic_fmt"] fn panic_fmt() -> ! { loop {} }
 # #[lang = "eh_unwind_resume"] extern fn rust_eh_unwind_resume() {}
+# #[no_mangle] pub extern fn rust_eh_register_frames () {}
+# #[no_mangle] pub extern fn rust_eh_unregister_frames () {}
 ```
 
 Note the use of `abort`: the `exchange_malloc` lang item is assumed to
diff --git a/src/doc/trpl/no-stdlib.md b/src/doc/trpl/no-stdlib.md
index 5fca05d53400..0040878fb2f4 100644
--- a/src/doc/trpl/no-stdlib.md
+++ b/src/doc/trpl/no-stdlib.md
@@ -34,6 +34,8 @@ fn start(_argc: isize, _argv: *const *const u8) -> isize {
 #[lang = "eh_personality"] extern fn eh_personality() {}
 #[lang = "panic_fmt"] fn panic_fmt() -> ! { loop {} }
 # #[lang = "eh_unwind_resume"] extern fn rust_eh_unwind_resume() {}
+# #[no_mangle] pub extern fn rust_eh_register_frames () {}
+# #[no_mangle] pub extern fn rust_eh_unregister_frames () {}
 # // fn main() {} tricked you, rustdoc!
 ```
 
@@ -60,6 +62,8 @@ pub extern fn main(argc: i32, argv: *const *const u8) -> i32 {
 #[lang = "eh_personality"] extern fn eh_personality() {}
 #[lang = "panic_fmt"] fn panic_fmt() -> ! { loop {} }
 # #[lang = "eh_unwind_resume"] extern fn rust_eh_unwind_resume() {}
+# #[no_mangle] pub extern fn rust_eh_register_frames () {}
+# #[no_mangle] pub extern fn rust_eh_unregister_frames () {}
 # // fn main() {} tricked you, rustdoc!
 ```
 
@@ -145,8 +149,10 @@ extern fn panic_fmt(args: &core::fmt::Arguments,
 }
 
 #[lang = "eh_personality"] extern fn eh_personality() {}
-# #[lang = "eh_unwind_resume"] extern fn rust_eh_unwind_resume() {}
 # #[start] fn start(argc: isize, argv: *const *const u8) -> isize { 0 }
+# #[lang = "eh_unwind_resume"] extern fn rust_eh_unwind_resume() {}
+# #[no_mangle] pub extern fn rust_eh_register_frames () {}
+# #[no_mangle] pub extern fn rust_eh_unregister_frames () {}
 # fn main() {}
 ```
 
diff --git a/src/test/run-make/no-duplicate-libs/bar.rs b/src/test/run-make/no-duplicate-libs/bar.rs
index c7f184cb5767..2df7604f9613 100644
--- a/src/test/run-make/no-duplicate-libs/bar.rs
+++ b/src/test/run-make/no-duplicate-libs/bar.rs
@@ -20,3 +20,5 @@ pub extern fn bar() {}
 #[lang = "eh_personality"] fn eh_personality() {}
 #[lang = "eh_unwind_resume"] fn eh_unwind_resume() {}
 #[lang = "panic_fmt"] fn panic_fmt() -> ! { loop {} }
+#[no_mangle] pub extern fn rust_eh_register_frames () {}
+#[no_mangle] pub extern fn rust_eh_unregister_frames () {}
diff --git a/src/test/run-make/no-duplicate-libs/foo.rs b/src/test/run-make/no-duplicate-libs/foo.rs
index d8bd2bec2de9..4e81f0ea06e6 100644
--- a/src/test/run-make/no-duplicate-libs/foo.rs
+++ b/src/test/run-make/no-duplicate-libs/foo.rs
@@ -20,4 +20,5 @@ pub extern fn foo() {}
 #[lang = "eh_personality"] fn eh_personality() {}
 #[lang = "eh_unwind_resume"] fn eh_unwind_resume() {}
 #[lang = "panic_fmt"] fn panic_fmt() -> ! { loop {} }
-
+#[no_mangle] pub extern fn rust_eh_register_frames () {}
+#[no_mangle] pub extern fn rust_eh_unregister_frames () {}
diff --git a/src/test/run-pass/smallest-hello-world.rs b/src/test/run-pass/smallest-hello-world.rs
index 5f35bd4f7d2e..b11970560d59 100644
--- a/src/test/run-pass/smallest-hello-world.rs
+++ b/src/test/run-pass/smallest-hello-world.rs
@@ -23,6 +23,8 @@ extern "rust-intrinsic" { fn transmute<T, U>(t: T) -> U; }
 #[lang = "eh_personality"] extern fn eh_personality() {}
 #[lang = "eh_unwind_resume"] extern fn eh_unwind_resume() {}
 #[lang = "panic_fmt"] fn panic_fmt() -> ! { loop {} }
+#[no_mangle] pub extern fn rust_eh_register_frames () {}
+#[no_mangle] pub extern fn rust_eh_unregister_frames () {}
 
 #[start]
 fn main(_: isize, _: *const *const u8) -> isize {