1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr38984.c b/gcc/testsuite/gcc.dg/pr38984.c
new file mode 100644
index 000000000..11f1e7f21
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr38984.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-delete-null-pointer-checks -fdump-tree-optimized" }
+ * */
+
+int f(int *p)
+{
+  int a = *p;
+  int *null = 0;
+  *null = 5;
+  return *p == a;
+}
+
+/* { dg-final { scan-tree-dump-times "\\\*p" 2 "optimized" } } */
+/* { dg-final { scan-tree-dump-not "return 1" "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */
+
+