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<div>Hi,</div>
<div><br>
</div>
<div>I found a bug in llvm 8.0.0. </div>
<div>When you compile with the "-fembed-bitcode" option it will lead to a crash when executing the output binary.</div>
<div><br>
</div>
<div>
<pre><pre>For unknown reason the assembled x86 code is different when the "-fembed-bitcode" option is supplied.</pre><pre>It works with clang 7.0.1</pre></pre>
</div>
<div><br>
</div>
<div>a.cpp:</div>
<div>
<div>#include <string></div>
<div>#include <iostream></div>
<div><br>
</div>
<div>int func(int a);</div>
<div><br>
</div>
<div>int main(int argc, char **argv) {</div>
<div>std::string s = std::to_string(func(argc));</div>
<div>std::cout << s << std::endl;</div>
<div>return 0;</div>
<div>}</div>
<div></div>
</div>
<div></div>
<div><br>
</div>
<div>b.cpp:</div>
<div>int func(int a) {</div>
<div>return a+1;</div>
<div>}</div>
<div></div>
<div><span>
<pre><br></pre>
<pre>Compile with:</pre>
<pre>=> clang++-8 a.cpp b.cpp -fembed-bitcode && ./a.out</pre>
<pre><br></pre>
<pre>and it fails:</pre>
<pre>=> [1] 14811 segmentation fault (core dumped) ./a.out</pre>
<pre><br></pre>
<pre><br></pre>
<pre><pre>Compile with:</pre><pre>=> clang++-8 a.cpp b.cpp && ./a.out </pre><pre><br></pre><pre>and it works:</pre><pre>=> 2</pre><pre><br></pre><pre><br></pre><pre><br></pre><pre>Best Regards,</pre><pre>Peter</pre><pre></pre></pre>
<br>
<pre>-- <br></pre>
<br>
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<p style="font-size: 11pt; font-family: Calibri, sans-serif;"><strong><span style="color: rgb(31, 73, 125); font-size: 10pt; font-family: Arial, sans-serif;">Peter Garba</span></strong><span style="font-size: 10pt;"><br>
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