1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr24287.c b/gcc/testsuite/gcc.dg/tree-ssa/pr24287.c
new file mode 100644
index 000000000..c264fbcb2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr24287.c
@@ -0,0 +1,29 @@
+/* { dg-do compile } */ 
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+int g1(int);
+int h(int *a, int *b)__attribute__((pure));
+void link_error();
+
+/* The calls to link_error should be eliminated, since nothing escapes to 
+   non-pure functions.  */
+int g(void)
+{
+  int t = 0, t1 = 2;
+  /* ???  That's not true.  The pointers escape to the integer return
+     value which we do not track in PTA.  */
+  int t2 = h(&t, &t1);
+  if (t != 0)
+    link_error ();
+  if (t1 != 2)
+    link_error ();
+  /* ???  And it would finally escape here even if we did.  */
+  g1(t2);
+  if (t != 0)
+    link_error ();
+  if (t1 != 2)
+    link_error ();
+  return t2 == 2;
+}
+/* We are allowed to optimize the first two link_error calls.  */
+/* { dg-final { scan-tree-dump-times "link_error" 2 "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */