1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr42084.c b/gcc/testsuite/gcc.dg/pr42084.c
new file mode 100644
index 000000000..d5aad9642
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr42084.c
@@ -0,0 +1,22 @@
+/* { dg-do run } */
+/* { dg-options "-O1 -fno-delete-null-pointer-checks" } */
+extern void abort (void);
+int g = 0;
+static int __attribute__((noinline)) f (long long a, long long b)
+{
+  int cmp;
+  cmp = a > b;
+  if (&g == 0)
+    cmp-=2;
+  else
+    cmp++;
+  return cmp;
+}
+
+int main (void)
+{
+  int ret = f (2, 1);
+  if (ret != 2)
+    abort ();
+  return 0;
+}