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    <head>
      <base href="https://llvm.org/bugs/" />
    </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 --- - [codeview] LLVM should emit T_CHAR instead of T_INT1 for PDB"
   href="https://llvm.org/bugs/show_bug.cgi?id=30552">30552</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[codeview] LLVM should emit T_CHAR instead of T_INT1 for PDB
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </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>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>DebugInfo
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>michaelwoerister@posteo.net
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The T_INTx and T_UINTx types seem to not be very well supported by the MSVC
debugger, and MSVC itself emits T_CHAR and T_UCHAR for int8_t and uint8_t. We
ran across this problem in the Rust compiler:
<a href="https://github.com/rust-lang/rust/issues/36646#issuecomment-250148666">https://github.com/rust-lang/rust/issues/36646#issuecomment-250148666</a>

The report there contains many useful details for reference.

The relevant code in LLVM can be found here:
<a href="https://github.com/llvm-mirror/llvm/blob/864e0ffb0eb47f848aca60d1f08fc2962fbb5009/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp#L1223-L1240">https://github.com/llvm-mirror/llvm/blob/864e0ffb0eb47f848aca60d1f08fc2962fbb5009/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp#L1223-L1240</a></pre>
        </div>
      </p>
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