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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - frame_layout in test-suite fails if compiled with -fstack-clash-protection on powerpc64le machine"
href="https://bugs.llvm.org/show_bug.cgi?id=46759">46759</a>
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<th>Summary</th>
<td>frame_layout in test-suite fails if compiled with -fstack-clash-protection on powerpc64le machine
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>release blocker
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>lkail@cn.ibm.com
</td>
</tr>
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>llvm-test-suite compiled with CFLAGS="-fstack-clash-protection"
CXX="-fstack-clash-protection" on a powerpc64le machine, test
```
MultiSource/UnitTests/C++11/frame_layout/frame_layout.test
```
fails.
Reduced IR
```
; ModuleID = 'bugpoint-reduced-simplified.bc'
source_filename =
"../../MultiSource/UnitTests/C++11/frame_layout/frame_layout.cpp"
target datalayout = "e-m:e-i64:64-n32:64"
target triple = "powerpc64le-unknown-linux-gnu"
$_Z10test_frameILj4096ELb1ELj2048ELb0ELb0EJEEvDpT4_jPKcP13trace_elementd =
comdat any
define dso_local void
@_Z10test_frameILj4096ELb1ELj2048ELb0ELb0EJEEvDpT4_jPKcP13trace_elementd(i32
%vla_size) local_unnamed_addr #0 comdat {
entry:
%0 = zext i32 %vla_size to i64
%vla = alloca i8, i64 %0, align 2048
%1 = load volatile i8, i8* %vla, align 2048
ret void
}
attributes #0 = { "probe-stack"="inline-asm" }
```</pre>
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