[PATCH] D142315: [clang] Add test for CWG1111

[Vlad Serebrennikov via Phabricator via cfe-commits]

Endill created this revision.
Endill added a reviewer: clang-language-wg.
Herald added a project: All.
Endill requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D142315

Files:
  clang/test/CXX/drs/dr11xx.cpp
  clang/www/cxx_dr_status.html


Index: clang/www/cxx_dr_status.html
===================================================================
--- clang/www/cxx_dr_status.html
+++ clang/www/cxx_dr_status.html
@@ -6473,7 +6473,7 @@
     <td><a href="https://wg21.link/cwg1111">1111</a></td>
     <td>C++11</td>
     <td>Remove dual-scope lookup of member template names</td>
-    <td class="none" align="center">Unknown</td>
+    <td class="full" align="center">Clang 6</td>
   </tr>
   <tr id="1112">
     <td><a href="https://wg21.link/cwg1112">1112</a></td>
Index: clang/test/CXX/drs/dr11xx.cpp
===================================================================
--- clang/test/CXX/drs/dr11xx.cpp
+++ clang/test/CXX/drs/dr11xx.cpp
@@ -1,9 +1,35 @@
-// RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
+// RUN: %clang_cc1 -std=c++98 %s -verify=expected,cxx98 -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
 // RUN: %clang_cc1 -std=c++2a %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
 
+namespace dr1111 { // dr1111: 6
+  // FIXME: warning is emitted for well-formed code in C++98 mode, which
+  // follows the old behavior (clang 5 and earlier). Behavior is correct in all
+  // modes, though: only candidates from the class of the object expression are
+  // considered.
+
+  template<typename>
+  struct set; // #dr1111-set-template
+
+  struct X {
+    template <typename T> void set(const T& value); // #dr1111-set-member
+  };
+  void foo() {
+    X x;
+    x.set<double>(3.2); // cxx98-error {{lookup of 'set' in member access expression is ambiguous; using member of 'X'}}
+    // cxx98-note@#dr1111-set-member {{lookup in the object type 'X' refers here}}
+    // cxx98-note@#dr1111-set-template {{lookup from the current scope refers here}}
+  }
+
+  struct Y {};
+  void bar() {
+    Y y;
+    y.set<double>(3.2); // expected-error {{no member named 'set' in 'dr1111::Y'}}
+  }
+}
+
 namespace dr1113 { // dr1113: partial
   namespace named {
     extern int a; // expected-note {{previous}}


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