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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Safestack option crashes when used on 32-bit builds"
href="https://bugs.llvm.org/show_bug.cgi?id=48510">48510</a>
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<th>Summary</th>
<td>Safestack option crashes when used on 32-bit builds
</td>
</tr>
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<th>Product</th>
<td>compiler-rt
</td>
</tr>
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<th>Version</th>
<td>11.0
</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>compiler-rt
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>shravanrn@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>I am attempting to use the safe-stack feature `-fsanitize=safe-stack` with
clang-11. I tested a simple hello world program in 32-bit compilation an Ubuntu
64 machine, however the program when run crashes with the error message
```
safestack CHECK failed:
/build/llvm-toolchain-11-11.0.0~++20200929060912+dda0a1867cc/compiler-rt/lib/safestack/safestack.cpp:95
MAP_FAILED != addr
Aborted (core dumped)
```
I wanted to check if SafeStack is indeed supported in 32-bit compilations?
If so, any help debugging this would be very helpful.
For completeness, here is the compilation command
```
clang-11 -m32 -g -O0 -fsanitize=safe-stack ./helloworld.c -o ./helloworld &&
./helloworld
```
And here is the program being compiled.
```
#include <stdio.h>
int main(int argc, char const *argv[])
{
printf("Hello World\n");
return 0;
}
```</pre>
</div>
</p>
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