1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/Wsequence-point-3.C b/gcc/testsuite/g++.dg/warn/Wsequence-point-3.C
new file mode 100644
index 000000000..5f73ca18b
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wsequence-point-3.C
@@ -0,0 +1,20 @@
+// PR c++/46401
+// { dg-do compile }
+// { dg-options "-Wsequence-point" }
+
+struct S
+{
+  S ();
+  S &operator<< (const char *);
+  S (const S &);
+};
+
+#define N1(n) << #n
+#define N2(n) N1(n)
+#define N3(n) N2(n##0) N2(n##1) N2(n##2) N2(n##3) N2(n##4) \
+	      N2(n##5) N2(n##6) N2(n##7) N2(n##8) N2(n##9)
+#define N4(n) N3(n##0) N3(n##1) N3(n##2) N3(n##3) N3(n##4) \
+	      N3(n##5) N3(n##6) N3(n##7) N3(n##8) N3(n##9)
+#define N5(n) N4(n##0) N4(n##1) N4(n##2) N4(n##3) N4(n##4) \
+	      N4(n##5) N4(n##6) N4(n##7) N4(n##8) N4(n##9)
+S s = S () N5(a) N5(b);