--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.c-torture/compile/pr37380.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,51 @@
+typedef struct basic_block_def *basic_block;
+typedef struct gimple_seq_node_d *gimple_seq_node;
+typedef struct gimple_seq_d *gimple_seq;
+typedef struct
+{
+  gimple_seq_node ptr;
+  gimple_seq seq;
+  basic_block bb;
+} gimple_stmt_iterator;
+typedef void *gimple;
+extern void exit(int);
+struct gimple_seq_node_d
+{
+  gimple stmt;
+  struct gimple_seq_node_d *next;
+};
+struct gimple_seq_d
+{
+};
+static __inline__ gimple_stmt_iterator
+gsi_start (gimple_seq seq)
+{
+  gimple_stmt_iterator i;
+  i.seq = seq;
+  return i;
+}
+static __inline__ unsigned char
+gsi_end_p (gimple_stmt_iterator i)
+{
+  return i.ptr == ((void *)0);
+}
+static __inline__ void
+gsi_next (gimple_stmt_iterator *i)
+{
+  i->ptr = i->ptr->next;
+}
+static __inline__ gimple
+gsi_stmt (gimple_stmt_iterator i)
+{
+  return i.ptr->stmt;
+}
+void
+c_warn_unused_result (gimple_seq seq)
+{
+  gimple_stmt_iterator i;
+  for (i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i))
+    {
+      gimple g = gsi_stmt (i);
+      if (!g) exit(0);
+    }
+}