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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 --- - [Inline asm] [ Microsoft ] Binary number under fasm-blocks return with error."
   href="https://llvm.org/bugs/show_bug.cgi?id=25657">25657</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[Inline asm] [ Microsoft ] Binary number under fasm-blocks return with error.
          </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>normal
          </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>michael.zuckerman@intel.com
          </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>Consider this program      
test.c:

void f()
{
  __asm {
        mov al,0b
  };
}
clang -fasm-blocks test.c
test.c:4:16: error: invalid reference to undefined symbol
        mov al,0b
               ^
1 error generated.

I found that the digit automat LexDigit() does not define for â€˜b’ suffix. More,
Microsoft syntax accepts 1111b us a constant, but not as a label. We cannot
define the â€˜b’ suffix in the automat, because it will create error for
instruction that use labels , like jmp.</pre>
        </div>
      </p>
      <hr>
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