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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - simple use of reference variable gives incorrect result"
href="https://llvm.org/bugs/show_bug.cgi?id=25042">25042</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>simple use of reference variable gives incorrect result
</td>
</tr>
<tr>
<th>Product</th>
<td>OpenMP
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</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>Runtime Library
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>llvmbugzilla@jackwasey.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>(See
<a href="https://stackoverflow.com/questions/32572966/did-i-misuse-a-reference-variable-in-a-simple-openmp-for-loop-or-is-it-a-clang">https://stackoverflow.com/questions/32572966/did-i-misuse-a-reference-variable-in-a-simple-openmp-for-loop-or-is-it-a-clang</a>)
Comparing clang-3.8 head from SVN to clang 3.7 release from SVN, compiled with
libc++ and libomp:
#include <vector>
#include <iostream>
// including or excluding omp makes no difference
#include <omp.h>
void doSomething(std::vector<int> &k) {
#pragma omp for
for (int i=0; i<2; ++i) {
std::cout << k.size() << "\n";
}
}
int main() {
std::vector<int> v;
v.push_back(1);
std::vector<int> &j = v;
doSomething(j);
return(0);
}
clang-3.7++ -fopenmp clang-err.cpp
./a.out
18446708892352074976
18446708892352074976
clang-3.8++ -fopenmp clang-err.cpp
./a.out
1
1</pre>
</div>
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