1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr42719.c b/gcc/testsuite/gcc.dg/pr42719.c
new file mode 100644
index 000000000..94a58e41a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr42719.c
@@ -0,0 +1,14 @@
+/* PR tree-optimization/42719 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftracer -fcompare-debug" } */
+
+int *v;
+
+void
+foo (int a)
+{
+  int i, j;
+  for (j = i = a; i != -1; j = i, i = v[i])
+    ;
+  v[j] = v[a];
+}