<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/155172>155172</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            LLDB `process plugin packet send` truncates responses containing null bytes
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          patryk4815
      </td>
    </tr>
</table>

<pre>
    When using LLDB’s `process plugin packet send` command, responses containing null bytes (`\x00`) are not handled correctly.  
This makes it impossible to use Python scripting (via `HandleCommand`) for gdb-remote packets that may legitimately include zeros (for example, memory reads or `vFile` operations).

This limitation blocks implementing certain functionality in downstream tools like https://github.com/pwndbg/pwndbg , which rely on being able to send and receive arbitrary gdb-remote packets.

### Repro

```lldb
(lldb) process plugin packet send vFile:open:2f70726f632f73656c662f657865,00000000,00000000
  packet: vFile:open:2f70726f632f73656c662f657865,00000000,00000000
response: F9
(lldb) script
>>> ret = lldb.SBCommandReturnObject()
>>> lldb.debugger.GetCommandInterpreter().HandleCommand(
...     "process plugin packet send vFile:pread:9,3E8,0", ret)
2
>>> ret.GetOutput()
'  packet: vFile:pread:9,3E8,0\nresponse: F3e8;\x7fELF\x02\x01\x01\n'
```
Notice how the response includes an ELF header, but the null bytes in the ELF data are lost/truncated, so the actual response cannot be fully parsed.

### Expected behavior
- `process plugin packet send` should return full response, not a null-terminated string
- Ideally, add an option like `-hex` to `process plugin packet send` so that the response is returned as a hexadecimal string

</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJysVU9v47YT_TT0ZWBBpqx_Bx0cx_79Fgi6xbZAzxQ5lthQpECOnLifvqCkZJM2bfZQQZAJaTjvzfjNowhBdxaxYfkdy-83YqLe-WYU5G-P-2qXb1qnbs1vPVqYgrYdPDzc37ETZ1XK6joAK9LRO4khwGimTlsYhXxEgoBWsSIF6YZBWMX4ETyG0dmAAaSzJLSN-exkDLQ3wgCMV6xIWX58TtO44DUIj2AdQS-sMqhAOu9RkrklACw9_NrrAIN4xACaQA-jC0G3BoEcTAHh5xv1zkKQXo8U0RivrlpE1v-fMx5XdgvaxXnoVLv1ODjCtZIA1AuCQdzAYKdJD4LQ3EBbaSaF8Ad6N3OPu_FZDKPBWO2Ag_M38ChUAOcj5vWsDcamuBG9IO1sYLxOWHp4qcXoQdP8BVrj5GOIRRkc0M70JfrYN7hMVsYgYTRFJqDckw3kUQxAzpmY6BGhJxoDyw6Mnxk_d5r6qU2kGxg_j09Wtd3rAiLjp17LHnwsLuJjRBRrN-PfCcIq8ChRXxGEbzV54W8fdGytiPFsueEbjt6tL4t0uY1R7RxUzStewz8LCZbOZQc3omXZgV_KtOTFpcj4pcyKvJBFwS9FXlZFzvgxXa-3y_QAa0aWHf6TfC9yjvnO9ftSFsXFd9lpucEjAcvuIYYkv9ytyvuGNHn7tf0dJUX98_rdpjlYYTt1Hfrkf0jrti-W0I8eCf2yK3mvZ16x9JAkCcSLcf4DrR2jUll2qBk_Zqcq1so4X-aWFl78rwVFRl8nGqc33Hn5UaM_yp4f7bseZlix7C7Of3k5PZxnI-Dzc_f6tIyXb1XE0sNPjrRE6N0TUI-vLvMyoAGEhdPDGXoUKrbrCO1Ec-gb79F2fhPjlCAxG49xgRg_k5-sFISzhwU3xwlJkzDfsaSw0aZahMtkzA1G4QOqv83B6XlESaigxV5ctfMsPWw_99DQu8nE0YtamRFekSOniCzmYraEftA2koVAXttuBviiUBhzi7FCxTEGN84eM7sEK9Jtj88RiNwPkHGLIb7vdVjZoQIRQECPz0Kh1IMw35lsVJOpOqvFBptdmRfpvtjX5aZvirJu232paqxKxWVRFTXP892uzbNyn2fVRjc85Xla8f1uv99lZdLW4qJEqrBWJccS2T7FQWiTGHMdEue7jQ5hwmaX57uSb4xo0YT5lOPc4hPMX6O-8_uNb-KmbTt1ge1TowOF72lIk8Emnnqft-ZFKeGzo24zedP8iztH9PVnO3q3mMN55hwYP69FXRv-ZwAAAP__Ifd-Pw">