1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr79499.c b/gcc/testsuite/gcc.dg/pr79499.c
new file mode 100644
index 00000000000..509549ff2fd
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr79499.c
@@ -0,0 +1,13 @@
+/* PR middle-end/79499 */
+/* { dg-do compile { target split_stack } } */
+/* { dg-options "-O2 -fsplit-stack -fno-omit-frame-pointer" } */
+
+struct S { struct S *a, *b; };
+
+void
+foo (struct S *x)
+{
+  do
+    x->b = x->a;
+  while (x = x->a);
+}