1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr78148.c b/gcc/testsuite/gcc.dg/pr78148.c
new file mode 100644
index 00000000000..c3c9b2e9a89
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr78148.c
@@ -0,0 +1,31 @@
+/* PR target/78148 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcompare-debug" } */
+
+struct A { int a, b; };
+struct B { char c, d; };
+extern void bar (struct A, struct B);
+struct C { char e, f; } a;
+struct D
+{
+  int g;
+  struct C h[4];
+};
+struct D *e;
+
+struct D
+foo (void)
+{
+  int b;
+  struct B c;
+  struct A d;
+  d.b = c.c = c.d = 0;
+  bar (d, c);
+}
+
+void
+baz ()
+{
+  e->h[0].e = e->h[0].f = 0;
+  foo ();
+}