<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 - constexpr function call is not noexcept"
   href="https://bugs.llvm.org/show_bug.cgi?id=38227">38227</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>constexpr function call is not noexcept
          </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>Linux
          </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++11
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>andrey.vihrov@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Compiling the following code:

    constexpr int f()
    {
        return 0;
    }

    static_assert(noexcept(f()), "f() should be noexcept");

with "clang++ -std=c++11 -c x.cpp" gives:

x.cpp:6:1: error: static_assert failed due to requirement 'noexcept(f())' "f()
should be noexcept"
static_assert(noexcept(f()), "f() should be noexcept");
^             ~~~~~~~~~~~~~
1 error generated.

According to <a href="https://en.cppreference.com/w/cpp/language/noexcept">https://en.cppreference.com/w/cpp/language/noexcept</a>, it would
appear the assert should succeed, because "f()" is a constant expression. GCC
8.1 accepts the code.

clang --version:

clang version 6.0.1 (tags/RELEASE_601/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin</pre>
        </div>
      </p>


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