1 files changed, 45 insertions, 0 deletions

diff --git a/src/lib/libssl/src/bugs/ultrixcc.c b/src/lib/libssl/src/bugs/ultrixcc.c
new file mode 100644
index 0000000000..7ba75b140f
--- /dev/null
+++ b/src/lib/libssl/src/bugs/ultrixcc.c
@@ -0,0 +1,45 @@
+#include <stdio.h>
+
+/* This is a cc optimiser bug for ultrix 4.3, mips CPU.
+ * What happens is that the compiler, due to the (a)&7,
+ * does
+ * i=a&7;
+ * i--;
+ * i*=4;
+ * Then uses i as the offset into a jump table.
+ * The problem is that a value of 0 generates an offset of
+ * 0xfffffffc.
+ */
+
+main()
+        {
+        f(5);
+        f(0);
+        }
+
+int f(a)
+int a;
+        {
+        switch(a&7)
+                {
+        case 7:
+                printf("7\n");
+        case 6:
+                printf("6\n");
+        case 5:
+                printf("5\n");
+        case 4:
+                printf("4\n");
+        case 3:
+                printf("3\n");
+        case 2:
+                printf("2\n");
+        case 1:
+                printf("1\n");
+#ifdef FIX_BUG
+        case 0:
+                ;
+#endif
+                }
+        }       
+