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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Incorrect warning about uninitialized variable with `asm`"
href="https://llvm.org/bugs/show_bug.cgi?id=31787">31787</a>
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<th>Summary</th>
<td>Incorrect warning about uninitialized variable with `asm`
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>4.0
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>paulepanter@users.sourceforge.net
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Clang 4.0.0-+rc1 shows a warning, which is – as far as I can see – incorrect.
```
$ clang-4.0 --version
clang version 4.0.0-+rc1-1 (tags/RELEASE_400/rc1)
Target: i686-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
$ git clone <a href="https://review.coreboot.org/memtest86plus">https://review.coreboot.org/memtest86plus</a>
$ cd memtest86plus
$ clang-4.0 -c -Wall -march=i486 -m32 -O0 -fomit-frame-pointer -fno-builtin
-ffreestanding -fPIC -fno-stack-protector -fgnu89-inline -fno-strict-aliasing
reloc.c
reloc.c:55:10: warning: variable 'got' is uninitialized when used here
[-Wuninitialized]
return *got;
^~~
reloc.c:54:26: note: initialize the variable 'got' to silence this warning
register Elf32_Addr *got asm ("%ebx");
^
= NULL
1 warning generated.
```
GCC 6.3.0 doesn’t show that warning.</pre>
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