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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 --- - clang_visitChildren skips elements" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24268&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=jKJvEmsr2ytE4NEjLrXgh6QagHsnt1CKVUSUd45dWlU&s=xNRUAz2QTarVrVbo4h36QkpY_c0g--NsTBKCKKSqCw0&e=">24268</a>
</td>
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<tr>
<th>Summary</th>
<td>clang_visitChildren skips elements
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.7
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
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<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>libclang
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mail@milianw.de
</td>
</tr>
<tr>
<th>CC</th>
<td>klimek@google.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14647" name="attach_14647" title="visitor code">attachment 14647</a> <a href="attachment.cgi?id=14647&action=edit" title="visitor code">[details]</a></span>
visitor code
This is a really odd issue I found. The attached clang-c based code (compile
with $CXX -lclang), fails to visit the call to returnTemplateInstantiation:
...
"MyTemplate" [(28, 1), (28, 44)] in test.cpp | ClassTemplate
"T" [(28, 11), (28, 21)] in test.cpp | TemplateTypeParameter
"ReturnType" [(30, 1), (30, 35)] in test.cpp | TypeAliasDecl
"MyTemplate" [(30, 20), (30, 30)] in test.cpp | TemplateRef
"callFunction" [(34, 1), (34, 26)] in test.cpp | FunctionDecl
"ReturnType" [(34, 1), (34, 11)] in test.cpp | TypeRef
"hereIsTheError" [(36, 1), (36, 42)] in test.cpp | FunctionDecl
"" [(36, 23), (36, 42)] in test.cpp | CompoundStmt
If one instead comments the line for f20, or uses an int for ReturnType, the
callFunction is properly visited:
...
"MyTemplate" [(28, 1), (28, 44)] in test.cpp | ClassTemplate
"T" [(28, 11), (28, 21)] in test.cpp | TemplateTypeParameter
"ReturnType" [(32, 1), (32, 23)] in test.cpp | TypeAliasDecl
"callFunction" [(34, 1), (34, 26)] in test.cpp | FunctionDecl
"ReturnType" [(34, 1), (34, 11)] in test.cpp | TypeRef
"hereIsTheError" [(36, 1), (36, 42)] in test.cpp | FunctionDecl
"" [(36, 23), (36, 42)] in test.cpp | CompoundStmt
"callFunction" [(36, 25), (36, 39)] in test.cpp | CallExpr
"callFunction" [(36, 25), (36, 37)] in test.cpp | UnexposedExpr
"callFunction" [(36, 25), (36, 37)] in test.cpp | DeclRefExpr
Can anyone point me to the code in clang that could be responsible for such
erratic behavior? It is quite a serious issue for us in KDevelop, and I could
believe it's bad for any other IDE relying on clang-c.
Thanks!</pre>
</div>
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