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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 --- - lld/ELF/SymbolTable.cpp:144: Assertion `GV' failed."
   href="https://llvm.org/bugs/show_bug.cgi?id=26872">26872</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>lld/ELF/SymbolTable.cpp:144: Assertion `GV' failed.
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>lld
          </td>
        </tr>

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

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

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>chisophugis@gmail.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>Created <span class=""><a href="attachment.cgi?id=16001" name="attach_16001" title="Bitcode that causes the error. Generated by clang.">attachment 16001</a> <a href="attachment.cgi?id=16001&action=edit" title="Bitcode that causes the error. Generated by clang.">[details]</a></span>
Bitcode that causes the error. Generated by clang.

It looks like the problematic thing is:

@.str = private unnamed_addr constant [4 x i8] c"Hey\00", align 1

In BitcodeFile::parse we call printName which produces the mangled name .L.str,
but later in addBitcodeFile in SymbolTable.cpp we call
`M->getNamedValue(B->getName())` and it doesn't find `.L.str`.

(the attached bitcode references an external function `foo`, but the other
bitcode file containing `foo` isn't needed to reproduce the assertion failure
so I didn't attach it)


sean:~/tmp % ~/pg/self-support/d+a/bin/ld.lld -m elf_x86_64 micro.o      
ld.lld: /home/sean/pg/self-support/self-support/lld/ELF/SymbolTable.cpp:144:
void addBitcodeFile(llvm::IRMover&, lld::elf::BitcodeFile&,
llvm::LLVMContext&): Assertion `GV' failed.
0  ld.lld          0x0000000000612a26
1  ld.lld          0x0000000000612d3b
2  ld.lld          0x0000000000611453
3  ld.lld          0x000000000061254d
4  libpthread.so.0 0x00007f5db3dec340
5  libc.so.6       0x00007f5db322dcc9 gsignal + 57
6  libc.so.6       0x00007f5db32310d8 abort + 328
7  libc.so.6       0x00007f5db3226b86
8  libc.so.6       0x00007f5db3226c32
9  ld.lld          0x00000000005655b0
10 ld.lld          0x000000000056b2c7
11 ld.lld          0x000000000056a000
12 ld.lld          0x0000000000499c6e
13 ld.lld          0x0000000000495d5f
14 ld.lld          0x00000000004940d2
15 ld.lld          0x0000000000408370
16 libc.so.6       0x00007f5db3218ec5 __libc_start_main + 245
17 ld.lld          0x00000000004077b9
Stack dump:
0.      Program arguments: /home/sean/pg/self-support/d+a/bin/ld.lld -m
elf_x86_64 micro.o 
zsh: abort (core dumped)  ~/pg/self-support/d+a/bin/ld.lld -m elf_x86_64
micro.o</pre>
        </div>
      </p>
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