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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang crashes when taking sizeof() of undeduced auto variable of ranged for loop"
href="http://llvm.org/bugs/show_bug.cgi?id=16880">16880</a>
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<th>Summary</th>
<td>Clang crashes when taking sizeof() of undeduced auto variable of ranged for loop
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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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
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rtrieu@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Repro:
void test() {
for (auto &A : X){
int x = sizeof(A);
}
}
Commandline:
clang -std=c++11 testing.cc
Output:
testing.cc:2:18: error: use of undeclared identifier 'X'
for (auto &A : X){
^
clang-3.3: llvm/tools/clang/lib/AST/ASTContext.cpp:1645: std::pair<long
unsigned int, unsigned int> clang::ASTContext::getTypeInfoImpl(const
clang::Type*) const: Assertion `!A->getDeducedType().isNull() && "cannot
request the size of an undeduced or dependent auto type"' failed.</pre>
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