+2000-09-17 Greg McGary <greg@mcgary.org>
+
+ * gcc.c-torture/execute/20000917-1.c: New test.
+ * gcc.c-torture/execute/20000917-1.x: XFAIL.
+
Sat 16-Sep-2000 08:14:58 BST Neil Booth <NeilB@earthling.net>
* gcc.dg/cpp/macro2.c: Testcase for multi-context arguments
2000-09-06 Greg McGary <greg@mcgary.org>
- * gcc.c-torture/20000906.c: New test.
- * gcc.c-torture/20000906.x: Expect failure for ix86 at `-O2'.
+ * gcc.c-torture/execute/20000906-1.c: New test.
+ * gcc.c-torture/execute/20000906-1.x: Expect failure for ix86 at `-O2'.
2000-09-05 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
--- /dev/null
+/* This bug exists in gcc-2.95, egcs-1.1.2, gcc-2.7.2 and probably
+ every other version as well. */
+
+typedef struct int3 { int a, b, c; } int3;
+
+int3
+one (void)
+{
+ return (int3) { 1, 1, 1 };
+}
+
+int3
+zero (void)
+{
+ return (int3) { 0, 0, 0 };
+}
+
+int
+main (void)
+{
+ int3 a;
+
+ /* gcc allocates a temporary for the inner expression statement
+ to store the return value of `one'.
+
+ gcc frees the temporaries for the inner expression statement.
+
+ gcc realloates the same temporary slot to store the return
+ value of `zero'.
+
+ gcc expands the call to zero ahead of the expansion of the
+ statement expressions. The temporary gets the value of `zero'.
+
+ gcc expands statement expressions and the stale temporary is
+ clobbered with the value of `one'. The bad value is copied from
+ the temporary into *&a. */
+
+ *({ ({ one (); &a; }); }) = zero ();
+ if (a.a && a.b && a.c)
+ abort ();
+ exit (0);
+}