1 files changed, 34 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/20111212-1.c b/gcc/testsuite/gcc.c-torture/execute/20111212-1.c
new file mode 100644
index 000000000..c46e6e946
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20111212-1.c
@@ -0,0 +1,34 @@
+/* PR tree-optimization/50569 */
+/* Reported by Paul Koning <pkoning@gcc.gnu.org> */
+/* Reduced testcase by Mikael Pettersson <mikpe@it.uu.se> */
+
+struct event {
+    struct {
+	unsigned int sec;
+    } sent __attribute__((packed));
+};
+
+void __attribute__((noinline,noclone)) frob_entry(char *buf)
+{
+    struct event event;
+
+    __builtin_memcpy(&event, buf, sizeof(event));
+    if (event.sent.sec < 64) {
+	event.sent.sec = -1U;
+	__builtin_memcpy(buf, &event, sizeof(event));
+    }
+}
+
+int main(void)
+{
+    union {
+	char buf[1 + sizeof(struct event)];
+	int align;
+    } u;
+
+    __builtin_memset(&u, 0, sizeof u);
+
+    frob_entry(&u.buf[1]);
+
+    return 0;
+}