<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/122702>122702</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Passing Constructor Expressions to conditional operator causes data loss while using clang compiler.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          bhavayc
      </td>
    </tr>
</table>

<pre>
    I use the clang compiler present at my company's common hub to create an AST dump of generated C/C++ code. It works fine for most of my use cases. However, recently, I discovered an edge case where the Clang compiler was not dumping all the information for constructor expressions used with a conditional operator. The code is compiling though. Refer to the below code expression, where a constructor expression MyClass(2, "World") is passed to the false condition of the conditional operator in C++.  In the below expression the information about the constructor passed to the if true condition MyClass(1) is stored properly **BUT** **in the Linux platform**, the constructor data for the if false condition gets lost. I want to see if we are missing something in Linux or should add additional flags for linux. Everything works fine in Windows.
Code Expression in question
**MyClass cObj = ((foo > threshold) ? MyClass(1) : _MyClass(2, "World"))_;**

This is my source cpp file:
[doit.cpp.txt](https://github.com/user-attachments/files/18396637/doit.cpp.txt)

The command used to invoke the clang compiler:
<myClangDir> -fsyntax-only -fno-color-diagnostics -Xclang -ast-dump=json -x c++ -fopenmp "<source>.cpp" -v > ",<myFile>.json"

The Lines highlighted in the below image refer to the data that is being lost on linux for the constructor expressions
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJyclU1v4zgPxz-NciFs2HKdl0MOTdrgKTAPdrHbxextIEu0rRlZ8opyUn_7heR0mhYzc1ighRWbIn_8k6IEke4s4p7VB1Y_rMQUeuf3TS_OYparxql5_wQTIYQeQRphO5BuGLVBD6NHQhtABBjm9FrYmfENxfXgLPRTA8GB9CgCgrBw_-czqGkYwbXQoUUvAio4Mn46Mn5g_ADSKczhKcDF-W8ErbYIrfMwOApx1zAnGikIKYf_uQue0TN-BI8SbTBzXD-B0iTdGT2qGBZVt2yBS49-yeX4PpeLILAuJDptOxDGJDNtW-cHEbSziUM6S8FPMjgP-BIVIO0sRSgFFx16ENFG6bhDGHBjTNL5HJ6jgE4haLqGjXFC76auz-EPbNFHsWLQBo27LMZvMWJiC774CQX8fz4aQcT4lkdrxvln541inDO-i3FHQZHzGqYVJkr5ShvlTVX-AT5oC9cS5QBP9gbzJv5HwUTjpvDq8zvwewjdQvDTLcZbFuUVm4KLlRx9xDEzMH7P-P3hr-dlcf2tF4BP2k4vMBoRIsjyKarxEUOJIFJJrxQf1egwEBhHIYcnuAgbIjFhsr0gCI8waKJYRHIDhj6utL3Gdx6od5NRIFT6f1W0NaKjFNdEwxwez-jnZfdNz2sLn7VV7kI5K-6PsRUe34TWFv6ZkKJLViwJ3l9lA_lb8xVY9QCMbxnfts4Bqx4h9B6pd7EbdsCq00eZWXUPX37ZQIzvvrDqcFW0iH_PvaZYoGEGcpOXCHIcodUGWZVM6oNyOuRyHPPwElj9wPi2D2Gk-J2fGD91OvRTk0s3MH6aCH0mQhCyH9AGYvwUncVnua1263W1Yfz0ziXfvaJgGjvCquUwBgfant23H42uK111HOY0Bx60jxplLc02iJfMWTND1lqXSWecz5QWnXUUtCTI_l58ZYJCFscFqx6-krOQvYC8TrGsdSPaYYwKsuq4aMOqx0jNOIfsnGqSdD0mjFPS7DGPnuLr7zl90hYJet31Rnd9HJf69vTpQXQI_nZ6pMYOvQixMg3GxjJpetql5b43_U9mWeqoktWHp-j7v9QsHvC0KOr2rmhLld0VTZHdVdsiE6rYZmuxUbUQ5Z3ENeO7ldpXalftxAr35aZabzZlVRerfo9qW1frppKy4lW5VfIOy6Ldinqz3si22a70nhe8LsqyKjnflUVec16Lcl1uilYpxQt2V-AgtMmNOQ-5891KE024LznfFHxlRIOG0u3HeaprFL9-WPl93JA1U0fsrjCaAr25CDoY3P8ultN_vJHx8eZKiDffj0apFBMhLWUyjgguvTYIU3L2vk_z1eTN_hfiR6TrIxu9-4oyMH5KKaZDs2R53vN_AwAA__8HBqqO">