PR middle-end/23584
* gcc.dg/pr23584.c: New test.
From-SVN: r104284
+2005-09-14 Josh Conner <jconner@apple.com>
+
+ PR middle-end/23584
+ * gcc.dg/pr23584.c: New test.
+
2005-09-14 Jerry DeLisle <jvdelisle@verizon.net>
PR fortran/21875 Internal Unit Array I/O, NIST
--- /dev/null
+/* Regression test for PR middle-end/23584 */
+/* Verify that dereferencing an absolute address inside of a function
+ makes that function impure. */
+
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-ipa-pure-const" } */
+
+int test1 (void)
+{
+ return * (volatile int *) 0x1234;
+}
+
+int test2 (void)
+{
+ int local = * (volatile int *) 0x1234;
+ return local;
+}
+
+/* { dg-final { scan-ipa-dump-not "found to be pure: test1" "pure-const" } } */
+/* { dg-final { scan-ipa-dump-not "found to be pure: test2" "pure-const" } } */
+/* { dg-final { cleanup-ipa-dump "pure-const" } } */