Merge from rustc

2 files changed, 12 insertions, 1 deletions

diff --git a/compiler/rustc_data_structures/Cargo.toml b/compiler/rustc_data_structures/Cargo.toml
index 9daa21ef6b1..5152d5ab046 100644
--- a/compiler/rustc_data_structures/Cargo.toml
+++ b/compiler/rustc_data_structures/Cargo.toml
@@ -25,7 +25,7 @@ smallvec = { version = "1.8.1", features = ["const_generics", "union", "may_dang
 stable_deref_trait = "1.0.0"
 stacker = "0.1.14"
 tempfile = "3.2"
-thin-vec = "0.2.8"
+thin-vec = "0.2.9"
 tracing = "0.1"
 
 [dependencies.parking_lot]
diff --git a/compiler/rustc_data_structures/src/sync.rs b/compiler/rustc_data_structures/src/sync.rs
index 9c0fb8265cf..c550f246e09 100644
--- a/compiler/rustc_data_structures/src/sync.rs
+++ b/compiler/rustc_data_structures/src/sync.rs
@@ -410,6 +410,7 @@ impl<T> Lock<T> {
 
     #[cfg(parallel_compiler)]
     #[inline(always)]
+    #[track_caller]
     pub fn lock(&self) -> LockGuard<'_, T> {
         if ERROR_CHECKING {
             self.0.try_lock().expect("lock was already held")
@@ -420,21 +421,25 @@ impl<T> Lock<T> {
 
     #[cfg(not(parallel_compiler))]
     #[inline(always)]
+    #[track_caller]
     pub fn lock(&self) -> LockGuard<'_, T> {
         self.0.borrow_mut()
     }
 
     #[inline(always)]
+    #[track_caller]
     pub fn with_lock<F: FnOnce(&mut T) -> R, R>(&self, f: F) -> R {
         f(&mut *self.lock())
     }
 
     #[inline(always)]
+    #[track_caller]
     pub fn borrow(&self) -> LockGuard<'_, T> {
         self.lock()
     }
 
     #[inline(always)]
+    #[track_caller]
     pub fn borrow_mut(&self) -> LockGuard<'_, T> {
         self.lock()
     }
@@ -476,6 +481,7 @@ impl<T> RwLock<T> {
 
     #[cfg(not(parallel_compiler))]
     #[inline(always)]
+    #[track_caller]
     pub fn read(&self) -> ReadGuard<'_, T> {
         self.0.borrow()
     }
@@ -491,6 +497,7 @@ impl<T> RwLock<T> {
     }
 
     #[inline(always)]
+    #[track_caller]
     pub fn with_read_lock<F: FnOnce(&T) -> R, R>(&self, f: F) -> R {
         f(&*self.read())
     }
@@ -509,6 +516,7 @@ impl<T> RwLock<T> {
 
     #[cfg(not(parallel_compiler))]
     #[inline(always)]
+    #[track_caller]
     pub fn write(&self) -> WriteGuard<'_, T> {
         self.0.borrow_mut()
     }
@@ -524,16 +532,19 @@ impl<T> RwLock<T> {
     }
 
     #[inline(always)]
+    #[track_caller]
     pub fn with_write_lock<F: FnOnce(&mut T) -> R, R>(&self, f: F) -> R {
         f(&mut *self.write())
     }
 
     #[inline(always)]
+    #[track_caller]
     pub fn borrow(&self) -> ReadGuard<'_, T> {
         self.read()
     }
 
     #[inline(always)]
+    #[track_caller]
     pub fn borrow_mut(&self) -> WriteGuard<'_, T> {
         self.write()
     }