<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 on valid - templates, sfinae, and is_constructible"
   href="https://bugs.llvm.org/show_bug.cgi?id=41056">41056</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Crash on valid - templates, sfinae, and is_constructible
          </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>Linux
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>C++
          </td>
        </tr>

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

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

        <tr>
          <th>CC</th>
          <td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>template <bool>
struct c;
struct f {
  template <typename d>
  f(d);
};
struct i {
  template <typename g, typename = typename c<__is_constructible(f, g)>::b>
  i(g);
};
struct e {
  i h = e();
};

Maybe infinite recursion in some template instantiation code - in the crash
stack I see 7 instances of clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformDependentNameType(TypeLocBuilder,
DependentNameTypeLoc, bool)

But maybe that's expected-ish for this code? I'm not sure.

(found tangentially while reducing that libstdc++ modules rejects-valid)</pre>
        </div>
      </p>


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