diff --git a/test/CBackend/2002-08-20-UnnamedArgument.ll b/test/CBackend/2002-08-20-UnnamedArgument.ll
new file mode 100644
index 00000000000..842c2d7cba8
--- /dev/null
+++ b/test/CBackend/2002-08-20-UnnamedArgument.ll
@@ -0,0 +1,9 @@
+; The C Writer bombs on this testcase because it tries the print the prototype
+; for the test function, which tries to print the argument name.  The function
+; has not been incorporated into the slot calculator, so after it does the name
+; lookup, it tries a slot calculator lookup, which fails.
+
+int %test(int) {
+        ret int 0
+}
+
diff --git a/test/CodeGen/CBackend/2002-08-20-UnnamedArgument.ll b/test/CodeGen/CBackend/2002-08-20-UnnamedArgument.ll
new file mode 100644
index 00000000000..842c2d7cba8
--- /dev/null
+++ b/test/CodeGen/CBackend/2002-08-20-UnnamedArgument.ll
@@ -0,0 +1,9 @@
+; The C Writer bombs on this testcase because it tries the print the prototype
+; for the test function, which tries to print the argument name.  The function
+; has not been incorporated into the slot calculator, so after it does the name
+; lookup, it tries a slot calculator lookup, which fails.
+
+int %test(int) {
+        ret int 0
+}
+