Index: include/clang/Driver/SanitizerArgs.h
===================================================================
--- include/clang/Driver/SanitizerArgs.h
+++ include/clang/Driver/SanitizerArgs.h
@@ -36,6 +36,7 @@
   int AsanFieldPadding = 0;
   bool SharedRuntime = false;
   bool AsanUseAfterScope = true;
+  bool AsanPoisonClassMemberOperatorNew = false;
   bool AsanGlobalsDeadStripping = false;
   bool LinkCXXRuntimes = false;
   bool NeedPIE = false;
Index: lib/Driver/SanitizerArgs.cpp
===================================================================
--- lib/Driver/SanitizerArgs.cpp
+++ lib/Driver/SanitizerArgs.cpp
@@ -724,6 +724,11 @@
         options::OPT_fsanitize_address_use_after_scope,
         options::OPT_fno_sanitize_address_use_after_scope, AsanUseAfterScope);
 
+    AsanPoisonClassMemberOperatorNew = Args.hasFlag(
+        options::OPT_fsanitize_address_poison_class_member_array_new_cookie,
+        options::OPT_fno_sanitize_address_poison_class_member_array_new_cookie,
+        AsanPoisonClassMemberOperatorNew);
+
     // As a workaround for a bug in gold 2.26 and earlier, dead stripping of
     // globals in ASan is disabled by default on ELF targets.
     // See https://sourceware.org/bugzilla/show_bug.cgi?id=19002
@@ -897,6 +902,10 @@
   if (AsanUseAfterScope)
     CmdArgs.push_back("-fsanitize-address-use-after-scope");
 
+  if (AsanPoisonClassMemberOperatorNew)
+    CmdArgs.push_back(
+        "-fsanitize-address-poison-class-member-array-new-cookie");
+
   if (AsanGlobalsDeadStripping)
     CmdArgs.push_back("-fsanitize-address-globals-dead-stripping");
 
Index: test/Driver/fsanitize.c
===================================================================
--- test/Driver/fsanitize.c
+++ test/Driver/fsanitize.c
@@ -191,6 +191,24 @@
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-WITHOUT-USE-AFTER-SCOPE
 // CHECK-ASAN-WITHOUT-USE-AFTER-SCOPE: -cc1{{.*}}address-use-after-scope
 
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=address -fsanitize-address-poison-class-member-array-new-cookie %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE
+// RUN: %clang_cl --target=x86_64-windows -fsanitize=address -fsanitize-address-poison-class-member-array-new-cookie -### -- %s 2>&1 | FileCheck %s --check-prefix=CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE
+// CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE: -cc1{{.*}}-fsanitize-address-poison-class-member-array-new-cookie
+
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=address -fno-sanitize-address-poison-class-member-array-new-cookie %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-OFF
+// RUN: %clang_cl --target=x86_64-windows -fsanitize=address -fno-sanitize-address-poison-class-member-array-new-cookie -### -- %s 2>&1 | FileCheck %s --check-prefix=CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-OFF
+// CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-OFF-NOT: -cc1{{.*}}address-poison-class-member-array-new-cookie
+
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=address -fno-sanitize-address-poison-class-member-array-new-cookie -fsanitize-address-poison-class-member-array-new-cookie %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-BOTH
+// RUN: %clang_cl --target=x86_64-windows -fsanitize=address -fno-sanitize-address-poison-class-member-array-new-cookie -fsanitize-address-poison-class-member-array-new-cookie -### -- %s 2>&1 | FileCheck %s --check-prefix=CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-BOTH
+// CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-BOTH: -cc1{{.*}}-fsanitize-address-poison-class-member-array-new-cookie
+
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=address -fsanitize-address-poison-class-member-array-new-cookie -fno-sanitize-address-poison-class-member-array-new-cookie %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-BOTH-OFF
+// CHECK-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-BOTH-OFF-NOT: -cc1{{.*}}address-poison-class-member-array-new-cookie
+
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-WITHOUT-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE
+// CHECK-ASAN-WITHOUT-POISON-CLASS-MEMBER-ARRAY-NEW-COOKIE-NOT: -cc1{{.*}}address-poison-class-member-array-new-cookie
+
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=address -fsanitize-address-globals-dead-stripping %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-GLOBALS
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ASAN-GLOBALS
 // RUN: %clang_cl --target=x86_64-windows-msvc -fsanitize=address -fsanitize-address-globals-dead-stripping -### -- %s 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-GLOBALS