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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - -frewrite-includes: Lack of an exit line directive in case of an empty header"
href="https://llvm.org/bugs/show_bug.cgi?id=26771">26771</a>
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<th>Summary</th>
<td>-frewrite-includes: Lack of an exit line directive in case of an empty header
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>eugvelesevich@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Consider simple case:
empty.cpp:
#include "empty.h"
empty.h has 0-size.
"clang -E -frewrite-includes empty.cpp" produces:
# 1 "<built-in>"
# 1 "empty.cpp"
#if 0 /* expanded by -frewrite-includes */
#include "empty.h"
#endif /* expanded by -frewrite-includes */
# 1 "empty.cpp"
# 1 "./empty.h" 1
# 2 "empty.cpp"
Reading the includes-rewritten source we never exit from empty.h
if empty.h contains something, clang produces:
# 1 "<built-in>"
# 1 "empty.cpp"
#if 0 /* expanded by -frewrite-includes */
#include "empty.h"
#endif /* expanded by -frewrite-includes */
# 1 "empty.cpp"
# 1 "./empty.h" 1
# 2 "empty.cpp" 2</pre>
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