<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Crash of clang for debug build"
   href="https://bugs.llvm.org/show_bug.cgi?id=38004">38004</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Crash of clang for debug build
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>6.0
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Windows NT
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>-New Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jvapen@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Using Clang-cl (6.0.0) with MSVC2017

Compile command:
clang-cl.exe -fms-compatibility-version=19.11  
-Wno-unused-command-line-argument /nologo /c /GR /EHsc  /std:c++17   /Od  /Z7 
t.cpp -w

t.cpp
-----
#include <type_traits>
struct A;

template <typename... T>
struct B
   {
   };

struct C
   {
   template <typename... T>
   static constexpr auto v = std::conjunction_v<std::is_base_of<A, T>...>;

   template <typename... T>
   static constexpr auto v<B<T...>> = v<T...>;
   };

C c{};</pre>
        </div>
      </p>


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