New testcase for PR487

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19268 91177308-0d34-0410-b5e6-96231b3b80d8

test/CFrontend/2005-01-02-ConstantInits.c

@@ -0,0 +1,24 @@
+// RUN: %llvmgcc %s -S -o -
+
+// This tests all kinds of hard cases with initializers and
+// array subscripts.  This corresponds to PR487.
+
+struct X { int a[2]; };
+
+int test() {
+  static int i23 = (int) &(((struct X *)0)->a[1]);
+  return i23;
+}
+
+int i = (int) &( ((struct X *)0) -> a[1]);
+
+int Arr[100];
+
+int foo(int i) { return bar(&Arr[49])+bar(&Arr[i]); }
+int foo2(int i) { 
+  static const int *X = &Arr[49];
+   static int i23 = (int) &( ((struct X *)0) -> a[0]);
+  int *P = Arr;
+  ++P;
+  return bar(Arr+i);
+}