diff --git a/compiler-rt/lib/scudo/standalone/atomic_helpers.h b/compiler-rt/lib/scudo/standalone/atomic_helpers.h
--- a/compiler-rt/lib/scudo/standalone/atomic_helpers.h
+++ b/compiler-rt/lib/scudo/standalone/atomic_helpers.h
@@ -106,14 +106,6 @@
                                    __ATOMIC_RELAXED);
 }
 
-template <typename T>
-inline bool atomic_compare_exchange_weak(volatile T *A, typename T::Type *Cmp,
-                                         typename T::Type Xchg,
-                                         memory_order MO) {
-  return __atomic_compare_exchange(&A->ValDoNotUse, Cmp, &Xchg, true, MO,
-                                   __ATOMIC_RELAXED);
-}
-
 // Clutter-reducing helpers.
 
 template <typename T>
diff --git a/compiler-rt/lib/scudo/standalone/tests/atomic_test.cpp b/compiler-rt/lib/scudo/standalone/tests/atomic_test.cpp
--- a/compiler-rt/lib/scudo/standalone/tests/atomic_test.cpp
+++ b/compiler-rt/lib/scudo/standalone/tests/atomic_test.cpp
@@ -80,26 +80,14 @@
 
 template <typename T> void checkAtomicCompareExchange() {
   typedef typename T::Type Type;
-  {
-    Type OldVal = 42;
-    Type NewVal = 24;
-    Type V = OldVal;
-    EXPECT_TRUE(atomic_compare_exchange_strong(
-        reinterpret_cast<T *>(&V), &OldVal, NewVal, memory_order_relaxed));
-    EXPECT_FALSE(atomic_compare_exchange_strong(
-        reinterpret_cast<T *>(&V), &OldVal, NewVal, memory_order_relaxed));
-    EXPECT_EQ(NewVal, OldVal);
-  }
-  {
-    Type OldVal = 42;
-    Type NewVal = 24;
-    Type V = OldVal;
-    EXPECT_TRUE(atomic_compare_exchange_weak(reinterpret_cast<T *>(&V), &OldVal,
+  Type OldVal = 42;
+  Type NewVal = 24;
+  Type V = OldVal;
+  EXPECT_TRUE(atomic_compare_exchange_strong(reinterpret_cast<T *>(&V), &OldVal,
                                              NewVal, memory_order_relaxed));
-    EXPECT_FALSE(atomic_compare_exchange_weak(
-        reinterpret_cast<T *>(&V), &OldVal, NewVal, memory_order_relaxed));
-    EXPECT_EQ(NewVal, OldVal);
-  }
+  EXPECT_FALSE(atomic_compare_exchange_strong(
+      reinterpret_cast<T *>(&V), &OldVal, NewVal, memory_order_relaxed));
+  EXPECT_EQ(NewVal, OldVal);
 }
 
 TEST(ScudoAtomicTest, AtomicCompareExchangeTest) {