<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 - lldb unable to demangle lambdas in destructors"
   href="https://bugs.llvm.org/show_bug.cgi?id=33603">33603</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>lldb unable to demangle lambdas in destructors
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>lldb
          </td>
        </tr>

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

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </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>All Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>lldb-dev@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>dmaclach@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>#include <exception>
#include <functional>

class Impl {
  public:
  template <typename F> void ImplTemplateFunc(F&& f)
  {
    return f();
  }

  ~Impl() {
    ImplTemplateFunc([] {
      printf("Hello");
    });
  }
};

int main() {
  Impl a;
  return 0;
}

Generates the mangled symbol __ZN4Impl16ImplTemplateFuncIZNS_D1EvEUlvE_EEvOT_
for the call to ImplTemplateFunc in ~Impl.

lldb is unable to demangle it

 * frame #0: 0x0000000100000e90
demangle`_ZN4Impl16ImplTemplateFuncIZNS_D1EvEUlvE_EEvOT_(this=0x00007fff5fbff658,
f=0x00007fff5fbff610) at main.cc:9
    frame #1: 0x0000000100000e59 demangle`Impl::~Impl(this=0x00007fff5fbff658)
at main.cc:13
    frame #2: 0x0000000100000e35 demangle`Impl::~Impl(this=0x00007fff5fbff658)
at main.cc:12
    frame #3: 0x0000000100000e0f demangle`main at main.cc:22
    frame #4: 0x00007fffb6742235 libdyld.dylib`start + 1
    frame #5: 0x00007fffb6742235 libdyld.dylib`start + 1

See also <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - c++ filt unable to demangle lambdas in destructors"
   href="show_bug.cgi?id=33602">bug 33602</a>.</pre>
        </div>
      </p>


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