<div dir="ltr"><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">Running the following code with <code style="margin:0px;padding:1px 5px;border:0px;font-size:13px;font-family:consolas,menlo,monaco,"lucida console","liberation mono","dejavu sans mono","bitstream vera sans mono","courier new",monospace,sans-serif;background-color:rgb(239,240,241);white-space:pre-wrap">clang++ -S -emit-llvm main.cpp && lli main.ll</code> on Linux(Debian)</p><pre class="gmail-lang-cpp gmail-prettyprint gmail-prettyprinted" style="margin-top:0px;margin-bottom:1em;padding:5px;border:0px;font-size:13px;width:auto;max-height:600px;overflow:auto;font-family:consolas,menlo,monaco,"lucida console","liberation mono","dejavu sans mono","bitstream vera sans mono","courier new",monospace,sans-serif;background-color:rgb(239,240,241);color:rgb(57,51,24);word-wrap:normal"><code style="margin:0px;padding:0px;border:0px;font-family:consolas,menlo,monaco,"lucida console","liberation mono","dejavu sans mono","bitstream vera sans mono","courier new",monospace,sans-serif;white-space:inherit"><span class="gmail-com" style="margin:0px;padding:0px;border:0px;color:rgb(133,140,147)">#include</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-str" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)"><future></span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">

</span><span class="gmail-typ" style="margin:0px;padding:0px;border:0px;color:rgb(43,145,175)">int</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> main </span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">()</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">{</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">
  </span><span class="gmail-kwd" style="margin:0px;padding:0px;border:0px;color:rgb(16,16,148)">return</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> std</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">::</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">async</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">([]{</span><span class="gmail-kwd" style="margin:0px;padding:0px;border:0px;color:rgb(16,16,148)">return</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">1</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">;}).</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">get</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">();</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">
</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">}</span></code></pre><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">fails to run on lli due to the following error:</p><pre class="gmail-lang-cpp gmail-prettyprint gmail-prettyprinted" style="margin-top:0px;margin-bottom:1em;padding:5px;border:0px;font-size:13px;width:auto;max-height:600px;overflow:auto;font-family:consolas,menlo,monaco,"lucida console","liberation mono","dejavu sans mono","bitstream vera sans mono","courier new",monospace,sans-serif;background-color:rgb(239,240,241);color:rgb(57,51,24);word-wrap:normal"><code style="margin:0px;padding:0px;border:0px;font-family:consolas,menlo,monaco,"lucida console","liberation mono","dejavu sans mono","bitstream vera sans mono","courier new",monospace,sans-serif;white-space:inherit"><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">LLVM ERROR</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">:</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-typ" style="margin:0px;padding:0px;border:0px;color:rgb(43,145,175)">Cannot</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> select</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">:</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">0xd012e0</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">:</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> 
     i64 </span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">=</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> X86ISD</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">::</span><span class="gmail-typ" style="margin:0px;padding:0px;border:0px;color:rgb(43,145,175)">WrapperRIP</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-typ" style="margin:0px;padding:0px;border:0px;color:rgb(43,145,175)">TargetGlobalTLSAddress</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">:</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">i64</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"><</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">i8</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">**</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">@_ZSt15__once_callable</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">></span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">0</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">[</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">TF</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">=</span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">10</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">]</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">

 </span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">0xd020c0</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">:</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> i64 </span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">=</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-typ" style="margin:0px;padding:0px;border:0px;color:rgb(43,145,175)">TargetGlobalTLSAddress</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"><</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">i8</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">**</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">@_ZSt15__once_callable</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">></span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">0</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">[</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">TF</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">=</span><span class="gmail-lit" style="margin:0px;padding:0px;border:0px;color:rgb(125,39,39)">10</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">]</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">
</span><span class="gmail-typ" style="margin:0px;padding:0px;border:0px;color:rgb(43,145,175)">In</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> function</span><span class="gmail-pun" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)">:</span><span class="gmail-pln" style="margin:0px;padding:0px;border:0px;color:rgb(48,51,54)"> </span><span class="gmail-typ" style="margin:0px;padding:0px;border:0px;color:rgb(43,145,175)">_ZSt9call_onceIMNSt13__future_base13_State_baseV2EFvPSt8functionIFSt10unique_ptrINS0_12_Result_baseENS4_8_DeleterEEvEEPbEJPS1_S9_SA_EEvRSt9once_flagOT_DpOT0_</span></code></pre><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">Questions:</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">What does it mean?</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">Are there any compiler-flags that fix this problem?</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">what specific features is libstdc++ using that cause this issue ?</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">How does my problem relate to <a href="https://mailtrack.io/trace/link/1fe0cd7f00b549701dad0d242b8ac56ba6ac935d?url=https%3A%2F%2Fllvm.org%2Fbugs%2Fshow_bug.cgi%3Fid%3D21431&signature=b9bd79ba0fa3ea59">Bug 21431</a> ?</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">The motivation behind this questions is to understand the differences between libc++ and libstdc++ that leads to this specific error message (on Linux) in llvm's orcjit.<br></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif"><br></p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;color:rgb(36,39,41);font-family:arial,"helvetica neue",helvetica,sans-serif">ps.: i've also asked this question in <a href="https://mailtrack.io/trace/link/5ef1b8085238498016553e10c4722adcdedf5114?url=http%3A%2F%2Fstackoverflow.com%2Fquestions%2F42022864%2Flli-llvm-error-cannot-select-x86isdwrapperrip-targetglobaltlsaddressi64&signature=c79ed05ad376b570">stackoverflow</a><br></p><span class="gmail-mt-tool-email-notification-true"></span><span class="gmail-mt-tool-email-tracking-true"></span><br><br><br><div class="mt-signature"><a href="https://mailtrack.io/trace/link/4ee627efe1b4ec418e1a4460b533a6dc7f6f6799?url=https%3A%2F%2Fmailtrack.io%2F&signature=cce36b1562f1942b" class="gmail-mt-signature-logo" style="text-decoration:none"><img src="https://s3-eu-west-1.amazonaws.com/mailtrack-crx/icon-signature.png" width="16" height="14"> </a><font color="#999999" class="mt-signature-text">Sent with <a href="https://mailtrack.io/install?source=signature&lang=en&referral=gaetano.checinski@gmail.com&idSignature=22" class="mt-install">Mailtrack</a></font></div><img width="0" height="0" class="mailtrack-img" src="https://mailtrack.io/trace/mail/acbaf3f655e54c97eb5d92723c2df87c4bdd394b.png?u=931501"></div>