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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ld -export-dynamic -r should probably ignore the -export-dynamic"
href="https://bugs.llvm.org/show_bug.cgi?id=43552">43552</a>
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<th>Summary</th>
<td>ld -export-dynamic -r should probably ignore the -export-dynamic
</td>
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<th>Product</th>
<td>lld
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>ELF
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>rafael@espindo.la
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, peter.smith@linaro.org
</td>
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<p>
<div>
<pre>The dpdk build system gets its flags confused and passes -export-dynamic to "ld
-r".
It looks like bfd ignores -export-dynamic when used with -r, but lld doesn't.
The output produced by lld is relocatable, but has a .dynsym.
If that file is then passed to lld, it gets confused and produces a program
that crashes at startup.
$ cat test.s
.globl _start
_start:
mov $60, %rax
mov $0, %rdi
syscall
$ clang -c test.s
$ ld.lld -export-dynamic -r -o lld.o test.o
$ ld.lld -dynamic-linker /lib64/ld-linux-x86-64.so.2 /lib64/libgcc_s.so.1 lld.o
-o test.lld
$ ./test.lld
./run.sh: line 10: 106569 Segmentation fault (core dumped) ./test.lld</pre>
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