1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr78408-3.c b/gcc/testsuite/gcc.dg/pr78408-3.c
new file mode 100644
index 0000000..5ea5458
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr78408-3.c
@@ -0,0 +1,14 @@
+/* PR tree-optimization/78408 */
+/* { dg-do compile { target size32plus } } */
+/* { dg-options "-O2 -fdump-tree-forwprop1-details" } */
+/* { dg-final { scan-tree-dump-times "after previous" 1 "forwprop1" } } */
+
+void* aaa();
+void* bbb()
+{
+    void* ret = aaa();
+    char buf[1025] = {};
+    __builtin_memcpy(ret, buf, sizeof(buf));
+    return ret;
+}
+