1 files changed, 24 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/c-c++-common/pr58346-1.c b/gcc-4.9/gcc/testsuite/c-c++-common/pr58346-1.c
new file mode 100644
index 000000000..371fcf484
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/c-c++-common/pr58346-1.c
@@ -0,0 +1,24 @@
+/* PR c/58346 */
+/* { dg-do compile } */
+
+struct U {
+#ifdef __cplusplus
+  char a[0];
+#endif
+};
+static struct U b[6];
+static struct U *u1, *u2;
+
+int
+foo (struct U *p, struct U *q)
+{
+  return q - p; /* { dg-error "arithmetic on pointer to an empty aggregate" } */
+}
+
+void
+bar (void)
+{
+  __PTRDIFF_TYPE__ d = u1 - u2; /* { dg-error "arithmetic on pointer to an empty aggregate" } */
+  __asm volatile ("" : "+g" (d));
+  foo (&b[0], &b[4]);
+}