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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - range-based for compilation fails for libstdc++ vector with -std=c++20"
href="https://bugs.llvm.org/show_bug.cgi?id=49970">49970</a>
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<th>Summary</th>
<td>range-based for compilation fails for libstdc++ vector with -std=c++20
</td>
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<th>Product</th>
<td>OpenMP
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Clang Compiler Support
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>ldalessandro@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>The following <vector> code compiles fine with C++17, and with C++20/libc++,
but fails with c++20 and libstdc++.
#include <vector>
void foo() {
std::vector<int> ints;
#pragma omp for
for (int i : ints); // error: condition of OpenMP for loop must be a
relational comparison ('<', '<=', '>', '>=', or '!=') of loop variable
'__begin1'"
}
Live example: <a href="https://godbolt.org/z/1q6MxMP71">https://godbolt.org/z/1q6MxMP71</a></pre>
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