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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - string-literals not handled correctly in linkage-specification"
href="http://llvm.org/bugs/show_bug.cgi?id=18870">18870</a>
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</tr>
<tr>
<th>Summary</th>
<td>string-literals not handled correctly in linkage-specification
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.4
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</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>
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<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>filip.roseen@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=12078" name="attach_12078" title="testcase.cpp">attachment 12078</a> <a href="attachment.cgi?id=12078&action=edit" title="testcase.cpp">[details]</a></span>
testcase.cpp
extern R"(C)" int a;
extern "C" "++" int b;
int main () {
}
---------------------------------------------------
foo.cpp:1:8: error: unknown linkage language
extern R"(C)" int a;
^
foo.cpp:2:12: error: unknown linkage language
extern "C" "++" int b;
^
---------------------------------------------------
As specified in [dcl.link]p2:
Linkage (3.5) between C++ and non-C++ code fragments can be achieved
using a linkage-specification:
linkage-specification:
extern string-literal { declaration-seq_opt }
extern string-literal declaration
`string-literal` is defined in [lex.string]:
string-literal:
encoding-prefix_opt "s-char-sequence_opt"
encoding-prefix_optR raw-string
concatenation of string-literals is defined under [lex.string]p13:
In translation phase 6 (2.2), adjacent string literals are concatenated.
---------------------------------------------------
gcc, icc, and msvc all (correctly) accept the provided snippet.</pre>
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