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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Reading block address array from LLVM assembly file changes the target block"
href="https://bugs.llvm.org/show_bug.cgi?id=46183">46183</a>
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<th>Summary</th>
<td>Reading block address array from LLVM assembly file changes the target block
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>10.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>MacOS X
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>timothy.werquin@guardsquare.com
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23569" name="attach_23569" title="The LLVM assembly file that reproduces the issue">attachment 23569</a> <a href="attachment.cgi?id=23569&action=edit" title="The LLVM assembly file that reproduces the issue">[details]</a></span>
The LLVM assembly file that reproduces the issue
I have an LLVM assembly file which will be read incorrectly by LLVM.
The array of block addresses `bbAdresses` contains several targets in the main
function. But when read by llvm-as and then disassembled by llvm-dis, all
elements of the array will point to the unnamed basic block.
So just doing `llvm-as -o - broken.ll | llvm-dis -o -` will output the
incorrect array.
When compiling the file using `clang` it will produce an infinite loop as the
targets of all indirect branches have been changed to the same basic block.
I tested using both the brew clang-8 toolchain and the default Apple clang
version 11.0.0</pre>
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