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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Noreturn adjustment in overload resolution for function templates"
href="http://llvm.org/bugs/show_bug.cgi?id=15291">15291</a>
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<th>Summary</th>
<td>Noreturn adjustment in overload resolution for function templates
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>ftynse@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Overload resolution allows functions to be passed with implicit noreturn
adjustment, but does not allow the same for function templates.
Example:
void __attribute__((noreturn)) func(int i) {}
template <typename T>
void __attribute__((noreturn)) tfunc(T t) {}
typedef void (*ptr)(int);
void foo(ptr p) {}
void bar() {
foo(func); // Okay
foo(tfunc<int>); // Error: ... candidate function 'foo' not viable
}
Other attributed functions, e.g. with Microsoft calling convention attributes,
may be subject to this issue as well.
Possible place to look at: Sema::ResolveAddressOfOverloadedFunction
(SemaOverload.cpp).
rjmccall: The problem is almost certainly that template argument deduction
should permit an inexact match requiring a noreturn conversion in the same
sorts of places that it would permit an inexact match requiring a qualification
conversion.</pre>
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