<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 - Compile option /std:c++17 seems not handled correctly with clang-cl"
   href="https://bugs.llvm.org/show_bug.cgi?id=47014">47014</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Compile option /std:c++17 seems not handled correctly with clang-cl
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>10.0
          </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>release blocker
          </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>bique.alexandre@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>Hi,

I have the following and strange error messages:

2>clang-cl : warning : argument unused during compilation: '/std:c++17'
[-Wunused-command-line-argument]

followed by:

4>C:\dev\dev1\float\engine\slave\target\generated\src\main\include\flt/core/event/EnduringEventClass.h(15):
error C2429: language feature 'nested-namespace-definition' requires compiler
flag '/std:c++17'

How can that be possible?

I've also tried to pass an additional /clang:-std=c++17 but it did not help.

Thanks,
Alex</pre>
        </div>
      </p>


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