Add test case for crash reported in <rdar://problem/8236270> (which has since been fixed in trunk).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109834 91177308-0d34-0410-b5e6-96231b3b80d8

test/Index/invalid-rdar-8236270.cpp

@@ -0,0 +1,11 @@
+// RUN: c-index-test -test-load-source all %s 2>&1 | FileCheck %s
+
+// This test case previously just crashed the frontend.
+
+struct abc *P;
+int main(
+
+// CHECK: StructDecl=abc:5:8 Extent=[5:1 - 5:11]
+// CHECK: VarDecl=P:5:13 (Definition) Extent=[5:8 - 5:14]
+// CHECK: VarDecl=main:6:5 (Definition) Extent=[6:1 - 6:9]
+