1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr17112-1.c b/gcc/testsuite/gcc.dg/pr17112-1.c
new file mode 100644
index 00000000000..7c8b7aa0432
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr17112-1.c
@@ -0,0 +1,32 @@
+/* PR middle-end/17112 */
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+extern void abort(void);
+
+typedef struct {
+  int int24:24  __attribute__ ((packed));
+} myint24;
+
+myint24 x[3] = {
+  0x123456,
+  0x789abc,
+  0xdef012
+};
+
+myint24 y[3];  // starts out as zeros
+
+void foo()
+{
+  y[1] = x[1];
+}
+
+int main()
+{
+  foo();
+
+  if (y[0].int24 != 0 || y[2].int24 != 0)
+    abort();
+  return 0;
+}
+