<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 with SEH and -fprofile-generate"
   href="https://bugs.llvm.org/show_bug.cgi?id=41279">41279</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Crash with SEH and -fprofile-generate
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>enhancement
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>dmajor@mozilla.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>david.majnemer@gmail.com, htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, mcastelluccio@mozilla.com, michaelwoerister@posteo.net, rnk@google.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Reproducer:

void f() {
  __try { f(); }
  __except (1) { return; }
  __try { f(); }
  __except (1) { }
}

clang-cl.exe -O2 -clang:-fprofile-generate -c test.cpp

Here's the stack though I'm not sure how much it helps, given the inlining in
my release build:

00 clang!`anonymous namespace'::PruneEH::runOnSCC
01 clang!`anonymous namespace'::CGPassManager::runOnModule
02 clang!llvm::legacy::PassManagerImpl::run
03 clang!clang::EmitBackendOutput
04 clang!clang::BackendConsumer::HandleTranslationUnit
05 clang!clang::ParseAST

I wonder if this is the PGO-analogue to the SEH gcov crash in <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - Test case using __try/__except/__finaly crashes if the GCOV profiling pass is enabled"
   href="show_bug.cgi?id=34833">bug 34833</a>.</pre>
        </div>
      </p>


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