2 files changed, 9 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/warn-unsequenced-cxx17.cpp b/clang/test/SemaCXX/warn-unsequenced-cxx17.cpp
new file mode 100644
index 00000000000..3c221fb8d65
--- /dev/null
+++ b/clang/test/SemaCXX/warn-unsequenced-cxx17.cpp
@@ -0,0 +1,8 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++17 -Wno-unused %s
+
+void test() {
+  int xs[10];
+  int *p = xs;
+  // expected-no-diagnostics
+  p[(long long unsigned)(p = 0)]; // ok
+}
diff --git a/clang/test/SemaCXX/warn-unsequenced.cpp b/clang/test/SemaCXX/warn-unsequenced.cpp
index 9e8a5b46c21..6d4468cabfe 100644
--- a/clang/test/SemaCXX/warn-unsequenced.cpp
+++ b/clang/test/SemaCXX/warn-unsequenced.cpp
@@ -81,6 +81,7 @@ void test() {
   int *p = xs;
   a = *(a++, p); // ok
   a = a++ && a; // ok
+  p[(long long unsigned)(p = 0)]; // expected-warning {{unsequenced modification and access to 'p'}}
 
   A *q = &agg1;
   (q = &agg2)->y = q->x; // expected-warning {{unsequenced modification and access to 'q'}}