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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 --- - Overloaded function template instantiation with decltype recurses infinitely"
href="http://llvm.org/bugs/show_bug.cgi?id=19639">19639</a>
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<th>Summary</th>
<td>Overloaded function template instantiation with decltype recurses infinitely
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.4
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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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>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++11
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>default_357-line@yahoo.de
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>---- testcase ----
struct Number { };
template<typename T1, typename T2>
static int foo(T1&, T2&) { return 1; }
template<typename T1>
static auto foo(T1 &a, int) -> decltype(foo(a, *new Number())) { return foo(a,
*new Number()); }
int main() { return foo(*new Number(), 8); }
---- error ----
testcase.cpp:4:12: fatal error: recursive template instantiation exceeded
maximum depth of 256
static int foo(T1&, T2&) { return 1; }
^
testcase.cpp:7:13: note: while substituting deduced template arguments into
function template 'foo' [with T1 = Number]
The code works in g++ 4.8. It also works when declaring an explicit return
type.</pre>
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