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      <base href="https://llvm.org/bugs/" />
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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 --- - Regression(271381:271420; very likely r271408): Assertion failed: BaseTy, file C:\b\build\slave\CrWinAsan\build\src\third_party\llvm\lib\CodeGen\AsmPrinter\CodeViewDebug.cpp, line 9 while building boringssl"
   href="https://llvm.org/bugs/show_bug.cgi?id=27984">27984</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Regression(271381:271420; very likely r271408): Assertion failed: BaseTy, file C:\b\build\slave\CrWinAsan\build\src\third_party\llvm\lib\CodeGen\AsmPrinter\CodeViewDebug.cpp, line 9 while building boringssl
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

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

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

        <tr>
          <th>Component</th>
          <td>C++
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>nicolasweber@gmx.de
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>FAILED: obj/third_party/boringssl/src/crypto/evp/boringssl_nacl_win64.sign.obj 
ninja -t msvc -e environment.x64 --
"..\..\third_party/llvm-build/Release+Asserts/bin/clang-cl" -m64 /nologo
/showIncludes /FC
@obj\third_party\boringssl\src\crypto\evp\boringssl_nacl_win64.sign.obj.rsp /c
..\..\third_party\boringssl\src\crypto\evp\sign.c
/Foobj\third_party\boringssl\src\crypto\evp\boringssl_nacl_win64.sign.obj
/Fdobj\third_party\boringssl\boringssl_nacl_win64.c.pdb 
Assertion failed: BaseTy, file
C:\b\build\slave\CrWinAsan\build\src\third_party\llvm\lib\CodeGen\AsmPrinter\CodeViewDebug.cpp,
line 916
Wrote crash dump file
"C:\Users\CHROME~1\AppData\Local\Temp\clang-cl.exe-de3475.dmp"
#0 0x000000014033ff25
(C:\b\build\slave\CrWinAsan\build\src\third_party\llvm-build\Release+Asserts\bin\clang-cl.exe+0x101ff25)
#1 0x00000001417e5cfe
(C:\b\build\slave\CrWinAsan\build\src\third_party\llvm-build\Release+Asserts\bin\clang-cl.exe+0x24c5cfe)
#2 0x00000001417d776c
(C:\b\build\slave\CrWinAsan\build\src\third_party\llvm-build\Release+Asserts\bin\clang-cl.exe+0x24b776c)
#3 0x00000001417d2dea
(C:\b\build\slave\CrWinAsan\build\src\third_party\llvm-build\Release+Asserts\bin\clang-cl.exe+0x24b2dea)

<a href="https://build.chromium.org/p/chromium.fyi/builders/CrWinAsan/builds/3590/steps/compile/logs/stdio">https://build.chromium.org/p/chromium.fyi/builders/CrWinAsan/builds/3590/steps/compile/logs/stdio</a>

'GYP_DEFINES': 'asan=1 clang=1 component=static_library enable_ipc_fuzzer=1
fastbuild=0 target_arch=ia32 test_isolation_mode=prepare
v8_enable_verify_heap=1'

Just fastbuild=0 is probably all it takes to trigger this. It's in boringssl,
so should be quick to build.</pre>
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