Update DR tests

clang/test/CXX/drs/cwg16xx.cpp

@@ -537,7 +537,7 @@ namespace cwg1696 { // cwg1696: 7
 #endif
 }
 
-// cwg1698: yes
+// cwg1698: 2.7
 // This file intentionally does not end in a newline
 // to facilitate the CWG1698 test
 

clang/test/CXX/drs/cwg2747.cpp

@@ -1,11 +1,18 @@
-// RUN: %clang_cc1 -std=c++11 -pedantic-errors -verify=expected %s -E | FileCheck %s --strict-whitespace --allow-empty
+// RUN: %clang_cc1 -std=c++98 -pedantic-errors -verify=cxx98 %s -E | FileCheck %s --strict-whitespace
+// RUN: %clang_cc1 -std=c++11 -pedantic-errors -verify=since-cxx11 %s -E | FileCheck %s --strict-whitespace
+// RUN: %clang_cc1 -std=c++17 -pedantic-errors -verify=since-cxx11 %s -E | FileCheck %s --strict-whitespace
+// RUN: %clang_cc1 -std=c++20 -pedantic-errors -verify=since-cxx11 %s -E | FileCheck %s --strict-whitespace
+// RUN: %clang_cc1 -std=c++23 -pedantic-errors -verify=since-cxx11 %s -E | FileCheck %s --strict-whitespace
+// RUN: %clang_cc1 -std=c++2c -pedantic-errors -verify=since-cxx11 %s -E | FileCheck %s --strict-whitespace
 
-// expected-no-diagnostics
+// since-cxx11-no-diagnostics
 // cwg2747: yes
 
 // Check that a newline is still added even though there is a
 // physical newline at the end of the file (which is spliced)
 // CHECK: int x;{{$[[:space:]]^}}int y;int z;{{$[[:space:]]^$}}
+// cxx98-error@+4 {{no newline at end of file}}
+// cxx98-note@+3 {{last newline deleted by splice here}}
 int x;
 int y;\
 int z;\

clang/www/cxx_dr_status.html

@@ -10003,7 +10003,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td><a href="https://cplusplus.github.io/CWG/issues/1698.html">1698</a></td>
     <td>DRWP</td>
     <td>Files ending in <TT>\</TT></td>
-    <td class="full" align="center">Yes</td>
+    <td class="full" align="center">Clang 2.7</td>
   </tr>
   <tr class="open" id="1699">
     <td><a href="https://cplusplus.github.io/CWG/issues/1699.html">1699</a></td>