Use -frewrite-includes for crash reports.

In future changes we should:
* use __builtin_trap rather than derefing 'random' volatile pointers.
* avoid dumping temporary files into /tmp when running tests, instead
  preferring a location that is properly cleaned up by lit.

Review by Chandler Carruth.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159469 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseDecl.cpp b/lib/Parse/ParseDecl.cpp
index 489a46c..409f8e0 100644
--- a/lib/Parse/ParseDecl.cpp
+++ b/lib/Parse/ParseDecl.cpp
@@ -4252,6 +4252,8 @@
     // portion is empty), if an abstract-declarator is allowed.
     D.SetIdentifier(0, Tok.getLocation());
   } else {
+    if (Tok.getKind() == tok::annot_pragma_parser_crash)
+      *(volatile int*) 0x11 = 0;
     if (D.getContext() == Declarator::MemberContext)
       Diag(Tok, diag::err_expected_member_name_or_semi)
         << D.getDeclSpec().getSourceRange();