Check in LLVM r95781.
diff --git a/test/FrontendC/2003-11-08-PointerSubNotGetelementptr.c b/test/FrontendC/2003-11-08-PointerSubNotGetelementptr.c
new file mode 100644
index 0000000..443dfbd
--- /dev/null
+++ b/test/FrontendC/2003-11-08-PointerSubNotGetelementptr.c
@@ -0,0 +1,9 @@
+// RUN: %llvmgcc -xc %s -c -o - | llvm-dis | grep getelementptr
+
+char *test(char* C) {
+  return C-1;   // Should turn into a GEP
+}
+
+int *test2(int* I) {
+  return I-1;
+}