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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -Wheader-hygiene is failing on unified builds"
href="https://bugs.llvm.org/show_bug.cgi?id=36616">36616</a>
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<th>Summary</th>
<td>-Wheader-hygiene is failing on unified builds
</td>
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<th>Product</th>
<td>clang
</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>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>sylvestre@debian.org
</td>
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<th>CC</th>
<td>dgregor@apple.com, erg@chromium.org, llvm-bugs@lists.llvm.org
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<p>
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<pre>Some projects (ex firefox) are using some unified build technics.
This is causing -Wheader-hygiene to be unusable.
--- foo.cpp ---
#include "bar.cpp"
--- bar.cpp ---
$ cat bar.cpp
using namespace std;
$ clang++-7 -c -Wheader-hygiene foo.cpp
[...]
./bar.cpp:1:17: warning: using namespace directive in global context in header
[-Wheader-hygiene]
2 warnings generated.
Maybe we should check for the extension of the file being included?!</pre>
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