1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/torture/pr28230.c b/gcc/testsuite/gcc.dg/torture/pr28230.c
new file mode 100644
index 000000000..5ecc0c716
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr28230.c
@@ -0,0 +1,20 @@
+/* { dg-do run } */
+/* { dg-options "-fwrapv" } */
+
+void foo( unsigned long long bb, unsigned short tn, unsigned e, unsigned* w );
+void foo( unsigned long long bb, unsigned short tn, unsigned e, unsigned* w )
+{
+        unsigned n = tn + bb;
+        do {
+                e = (e > n) ? e : *w;
+                n -= (e > n) ? n : e;
+                if (*w)
+                        *w = 0;
+        } while ( n );
+}
+int main()
+{
+        unsigned w = 0;
+        foo( 0, 0, 0, &w );
+        return 0;
+}