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      <base href="https://bugs.llvm.org/">
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [x86] After r350966, on asm typo, Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"), function cast"
   href="https://bugs.llvm.org/show_bug.cgi?id=43610">43610</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[x86] After r350966, on asm typo, Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"), function cast
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </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>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>dimitry@andric.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>After <a href="https://reviews.llvm.org/rL350966">https://reviews.llvm.org/rL350966</a> ("[X86] Fix incomplete handling of
register-assigned variables in parsing"), a minor typo in assembly, namely
forgetting a comma, leads to an assertion failure:

Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"),
function cast, file /home/dim/src/llvm/trunk/include/llvm/Support/Casting.h,
line 255.
Stack dump:
0.      Program arguments: /home/dim/ins/llvm-trunk-r350966/bin/clang -cc1as
-triple x86_64-- -filetype obj asmtypo.s
0  clang       0x00000000028b14b8
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1  clang       0x00000000028af3d8 llvm::sys::RunSignalHandlers() + 248
2  clang       0x00000000028b1d58
llvm::sys::PrintStackTraceOnErrorSignal(llvm::StringRef, bool) + 1272
3  libthr.so.3 0x00000008043d0430 _pthread_sigmask + 1328
Abort trap

Test case:

// clang -cc1as -triple x86_64-- -filetype obj asmtypo.s
movl %ebx %eax

Before r350965, this resulted in a more regular error message:

$ ~/ins/llvm-trunk-r350965/bin/clang -cc1as -triple x86_64-- -filetype obj
asmtypo.s
asmtypo.s:2:11: error: unexpected token in argument list
movl %ebx %eax
          ^</pre>
        </div>
      </p>


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