1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr21021.c b/gcc/testsuite/gcc.c-torture/compile/pr21021.c
new file mode 100644
index 000000000..b74821630
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr21021.c
@@ -0,0 +1,19 @@
+/* PR tree-optimization/21021
+
+   The front end produces a comparison of mismatched types, namely an
+   integer and a pointer, causing VRP to compute TYPE_MAX_VALUE for a
+   pointer, which we cannot.  */
+
+extern void *bar (void);
+
+int
+foo (unsigned int *p, unsigned int *q)
+{
+  const void *r = bar ();
+
+  if (r >= (const void *) *p
+      && r < (const void *) *q)
+    return 1;
+
+  return 0;
+}