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<base href="https://bugs.llvm.org/">
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [yaml2obj] will crash when reading a yaml file which only contains comments."
href="https://bugs.llvm.org/show_bug.cgi?id=41513">41513</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[yaml2obj] will crash when reading a yaml file which only contains comments.
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>higuoxing@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>yaml2obj will crash if it reads a yaml file only contains comments. e.g.
```
$ cat empty.yaml
# some comment
$ yaml2obj empty.yaml
Stack dump:
0. Program arguments:
/Users/cat/Workspace/llvm/llvm-tools-lld-build/bin/yaml2obj empty.yaml
0 yaml2obj 0x0000000106d96138
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1 yaml2obj 0x0000000106d952b5 llvm::sys::RunSignalHandlers() +
85
2 yaml2obj 0x0000000106d967a8 SignalHandler(int) + 264
3 libsystem_platform.dylib 0x00007fffbf796b3a _sigtramp + 26
4 libsystem_platform.dylib 0x00007fff58f65060 _sigtramp + 2575099200
5 yaml2obj 0x0000000106d4d1fd
llvm::yaml::MappingTraits<llvm::yaml::YamlObjectFile>::mapping(llvm::yaml::IO&,
llvm::yaml::YamlObjectFile&) + 141
6 yaml2obj 0x0000000106c9cc0c main + 892
7 libdyld.dylib 0x00007fffbf587235 start + 1
8 libdyld.dylib 0x0000000000000002 start + 1084722638
[1] 2847 segmentation fault
~/Workspace/llvm/llvm-tools-lld-build/bin/yaml2obj empty.yaml
```</pre>
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