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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Parser] Pragma inside statement causes error"
href="https://bugs.llvm.org/show_bug.cgi?id=41514">41514</a>
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<th>Summary</th>
<td>[Parser] Pragma inside statement causes error
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>llvm@meinersbur.de
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<th>CC</th>
<td>hfinkel@anl.gov, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>The following source does not compile:
int main() {
return
#pragma STDC FENV_ACCESS OFF
0;
}
$ clang test.c
test.c:5:14: error: expected expression
#pragma STDC FENV_ACCESS OFF
^
1 error generated.
While this one does:
int main() {
#pragma STDC FENV_ACCESS OFF
return 0;
}
$ clang test.c
The reason is that the #pragma inserts an annotation token into the
preprocessor's token stream. This annotation is only handled before a new
statement is expected (method
Parser::ParseStatementOrDeclarationAfterAttributes), but not within e.g.
expressions.</pre>
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