4 files changed, 5 insertions, 5 deletions
diff --git a/src/libstd/unstable/atomics.rs b/src/libstd/unstable/atomics.rs
index f9380e7ad12..a32b52db1cc 100644
--- a/src/libstd/unstable/atomics.rs
+++ b/src/libstd/unstable/atomics.rs
@@ -338,7 +338,7 @@ impl<T> AtomicOption<T> {
 
 #[unsafe_destructor]
 impl<T> Drop for AtomicOption<T> {
-    fn drop(&self) {
+    fn drop(&mut self) {
         // This will ensure that the contained data is
         // destroyed, unless it's null.
         unsafe {
diff --git a/src/libstd/unstable/dynamic_lib.rs b/src/libstd/unstable/dynamic_lib.rs
index d8a07eeb8b7..4c92d9c2e36 100644
--- a/src/libstd/unstable/dynamic_lib.rs
+++ b/src/libstd/unstable/dynamic_lib.rs
@@ -26,7 +26,7 @@ use result::*;
 pub struct DynamicLibrary { priv handle: *libc::c_void }
 
 impl Drop for DynamicLibrary {
-    fn drop(&self) {
+    fn drop(&mut self) {
         match do dl::check_for_errors_in {
             unsafe {
                 dl::close(self.handle)
diff --git a/src/libstd/unstable/finally.rs b/src/libstd/unstable/finally.rs
index 42820aaaa95..6833ca6d7cf 100644
--- a/src/libstd/unstable/finally.rs
+++ b/src/libstd/unstable/finally.rs
@@ -64,7 +64,7 @@ struct Finallyalizer<'self> {
 
 #[unsafe_destructor]
 impl<'self> Drop for Finallyalizer<'self> {
-    fn drop(&self) {
+    fn drop(&mut self) {
         (self.dtor)();
     }
 }
diff --git a/src/libstd/unstable/sync.rs b/src/libstd/unstable/sync.rs
index 26313323291..1dafeb27a0e 100644
--- a/src/libstd/unstable/sync.rs
+++ b/src/libstd/unstable/sync.rs
@@ -220,7 +220,7 @@ impl<T: Send> Clone for UnsafeArc<T> {
 
 #[unsafe_destructor]
 impl<T> Drop for UnsafeArc<T>{
-    fn drop(&self) {
+    fn drop(&mut self) {
         unsafe {
             // Happens when destructing an unwrapper's handle and from `#[unsafe_no_drop_flag]`
             if self.data.is_null() {
@@ -308,7 +308,7 @@ pub struct LittleLock {
 }
 
 impl Drop for LittleLock {
-    fn drop(&self) {
+    fn drop(&mut self) {
         unsafe {
             rust_destroy_little_lock(self.l);
         }