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-rw-r--r--library/std/src/alloc.rs1
-rw-r--r--library/std/src/panicking.rs2
2 files changed, 3 insertions, 0 deletions
diff --git a/library/std/src/alloc.rs b/library/std/src/alloc.rs
index 99d105a2454..5d2a304b41c 100644
--- a/library/std/src/alloc.rs
+++ b/library/std/src/alloc.rs
@@ -348,6 +348,7 @@ fn default_alloc_error_hook(layout: Layout) {
     unsafe extern "Rust" {
         // This symbol is emitted by rustc next to __rust_alloc_error_handler.
         // Its value depends on the -Zoom={panic,abort} compiler option.
+        #[cfg_attr(not(bootstrap), rustc_std_internal_symbol)]
         static __rust_alloc_error_handler_should_panic: u8;
     }
 
diff --git a/library/std/src/panicking.rs b/library/std/src/panicking.rs
index b47b41d4bc5..b35549c92ad 100644
--- a/library/std/src/panicking.rs
+++ b/library/std/src/panicking.rs
@@ -55,12 +55,14 @@ pub static EMPTY_PANIC: fn(&'static str) -> ! =
 // hook up these functions, but it is not this day!
 #[allow(improper_ctypes)]
 unsafe extern "C" {
+    #[cfg_attr(not(bootstrap), rustc_std_internal_symbol)]
     fn __rust_panic_cleanup(payload: *mut u8) -> *mut (dyn Any + Send + 'static);
 }
 
 unsafe extern "Rust" {
     /// `PanicPayload` lazily performs allocation only when needed (this avoids
     /// allocations when using the "abort" panic runtime).
+    #[cfg_attr(not(bootstrap), rustc_std_internal_symbol)]
     fn __rust_start_panic(payload: &mut dyn PanicPayload) -> u32;
 }