<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 - Segfault on `p $0`"
   href="https://bugs.llvm.org/show_bug.cgi?id=42895">42895</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Segfault on `p $0`
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>8.0
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>Linux
          </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>whitequark@whitequark.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>jdevlieghere@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=22342" name="attach_22342" title="Communication with GDB stub">attachment 22342</a> <a href="attachment.cgi?id=22342&action=edit" title="Communication with GDB stub">[details]</a></span>
Communication with GDB stub

I am using LLDB 8 from Debian. To reproduce:

(lldb) gdb-remote 1234
Process 1 stopped
* thread #1, stop reason = signal SIGTRAP
    frame #0: 0xffffffffffffffff
(lldb) p $0
(lldb) p $0

Thread 1 "lldb-8" received signal SIGSEGV, Segmentation fault.
EvaluateExpression () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Target/Target.cpp:2389
2389    /build/llvm-toolchain-8-8.0.1/tools/lldb/source/Target/Target.cpp: No
such file or directory.
(gdb) bt
#0  EvaluateExpression () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Target/Target.cpp:2389
#1  0x00007ffff2bcc196 in EvaluateExpression () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Commands/CommandObjectExpression.cpp:441
#2  0x00007ffff2bcd0e8 in DoExecute () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Commands/CommandObjectExpression.cpp:658
#3  0x00007ffff277692f in Execute () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Interpreter/CommandObject.cpp:997
#4  0x00007ffff276ddf2 in HandleCommand () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Interpreter/CommandInterpreter.cpp:1761
#5  0x00007ffff2771531 in IOHandlerInputComplete () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Interpreter/CommandInterpreter.cpp:2801
#6  0x00007ffff26c63e1 in Run () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Core/IOHandler.cpp:558
#7  0x00007ffff26abb86 in ExecuteIOHandlers () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Core/Debugger.cpp:988
#8  0x00007ffff2772376 in RunCommandInterpreter () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/Interpreter/CommandInterpreter.cpp:3003
#9  0x00007ffff2561121 in RunCommandInterpreter () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/source/API/SBDebugger.cpp:934
#10 0x0000000000407131 in MainLoop () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/tools/driver/Driver.cpp:756
#11 0x0000000000407d51 in main () at
/build/llvm-toolchain-8-8.0.1/tools/lldb/tools/driver/Driver.cpp:936

Communication with GDB stub is attached.

This is a MIPS target and I was trying to get the value of register $0.</pre>
        </div>
      </p>


      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>