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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [libtooling] ASTContext::getObjCInstanceType never returns null - it creates typedef if type is not known"
href="https://llvm.org/bugs/show_bug.cgi?id=30674">30674</a>
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<th>Summary</th>
<td>[libtooling] ASTContext::getObjCInstanceType never returns null - it creates typedef if type is not known
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
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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
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<th>Component</th>
<td>libclang
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>akotulski@fb.com
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<th>CC</th>
<td>klimek@google.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Docs for getObjCInstanceType say:
"Retrieve the Objective-C "instancetype" type, if already known;
otherwise, returns a NULL type;"
This is obviously not true, by looking at source code, I also tested it on
clang trunk from August to confirm. It would be great if there was a way to
know if getObjCInstanceType is known or not without creating it.
This is how source code looks like:
QualType getObjCInstanceType() {
return getTypeDeclType(getObjCInstanceTypeDecl());
}
TypedefDecl *getObjCInstanceTypeDecl() {
if (!ObjCInstanceTypeDecl)
ObjCInstanceTypeDecl = TypedefDecl::Create(...)
}
return ObjCInstanceTypeDecl;
}</pre>
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