<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 - [Win] Assertion failed: Idx < size() && "Template parameter index out-of-range""
   href="https://bugs.llvm.org/show_bug.cgi?id=41639">41639</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[Win] Assertion failed: Idx < size() && "Template parameter index out-of-range"
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>trunk
          </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>C++14
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>mikhail.strelnikov@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=21839" name="attach_21839" title="stdout">attachment 21839</a> <a href="attachment.cgi?id=21839&action=edit" title="stdout">[details]</a></span>
stdout

template <class, class>
constexpr bool is_same_v = false;
template <class T>
constexpr bool is_same_v<T, T> = true;

bool foo()
{
    return is_same_v<char, char>;
}

Z:\bug>"C:/Program Files/LLVM/bin/clang++.exe" bug.cpp -std=c++14 -g

Assertion failed: Idx < size() && "Template parameter index out-of-range", file
Z:\llvm_package_HEAD\llvm\tools\clang\include\clang/AST/DeclTemplate.h, line
137

Compiling without "-g" flag works fine.</pre>
        </div>
      </p>


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