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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang fails on Windows with enabled exceptions during loop unrolling"
href="https://llvm.org/bugs/show_bug.cgi?id=28132">28132</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang fails on Windows with enabled exceptions during loop unrolling
</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>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</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>adamf88@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=16544" name="attach_16544" title="Compilation data">attachment 16544</a> <a href="attachment.cgi?id=16544&action=edit" title="Compilation data">[details]</a></span>
Compilation data
If I try to compile this program with exceptions enabled and -O2 then I get
error message:
Assertion failed: L->isLoopSimplifyForm() && "Must put loop into normal form
fir
st.", file
D:\src\llvm_package_272293\llvm\lib\Transforms\Scalar\LoopUnrollPass.
cpp, line 363
compilation script:
clang-cl /EHsc main.cpp -O2 /link
Source code (also in attachment):
#include <vector>
using namespace std;
struct Block
{
int colorA;
int colorB;
};
int main()
{
while (true)
{
vector<Block> blocks;
for (int i = 0; i < 6; i++) {
blocks.push_back(Block());
}
throw Block();
}
}
In attachment I added also preprocessed source and whole compilation output.
Tested also on most recent available revision @272572</pre>
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