1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/graphite/pr37943.c b/gcc/testsuite/gcc.dg/graphite/pr37943.c
new file mode 100644
index 000000000..4513d12c0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/graphite/pr37943.c
@@ -0,0 +1,33 @@
+/* { dg-options "-O3 -fgraphite-identity -fdump-tree-graphite-all" } */
+
+typedef struct
+{
+      int mode,state,num,state_out;
+      unsigned char* bits;
+      char *out;
+}test;
+unsigned char copy( test* s )
+{
+   while(1)
+     {
+      if (s->mode == 0) break;
+      if (s->state_out >= s->num) break;
+      *(s->out) = s->bits[s->state_out];
+      if (s->mode == 0) s->mode++;
+     }
+}
+unsigned char compress(test *in)
+{
+   unsigned char p_in, p_out;
+   while(1)
+   {
+      if (in->state == 1) 
+      {
+         p_out |= copy(in);
+         if (in->state_out < in->num) break;
+      }
+   }
+   return p_in || p_out;
+}
+/* { dg-final { cleanup-tree-dump "graphite" } } */
+