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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Typedef return type + Fully Qualified name for a member function causes error in out-of-line definition"
href="https://llvm.org/bugs/show_bug.cgi?id=25182">25182</a>
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<th>Summary</th>
<td>Typedef return type + Fully Qualified name for a member function causes error in out-of-line definition
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.7
</td>
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<th>Hardware</th>
<td>PC
</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>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>a@gha.st
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<p>
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<pre>When defining a member function out of line with its fully qualified name and a
return type that is a type alias, clang will cause an error.
Consider the following example:
// compiled with clang++ -std=c++14 file.cpp
using test_t = int;
struct S { test_t f(); };
// This will error out with:
// error: 'test_t' (aka 'int') is not a class, namespace, or enumeration
test_t ::S::f() { return 0; }
// Defining it like this will compile correctly:
// test_t S::f() { return 0; }
// The following also works:
// int ::S::f() { return 0; }
// a main function so it links correctly:
int main() { }
This bug appears with both the following clang++ versions:
$ clang++ -v
clang version 3.7.0 (tags/RELEASE_370/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation:
/usr/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.2.0
Found candidate GCC installation:
/usr/bin/../lib64/gcc/x86_64-unknown-linux-gnu/5.2.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0
Found candidate GCC installation: /usr/lib64/gcc/x86_64-unknown-linux-gnu/5.2.0
Selected GCC installation: /usr/bin/../lib64/gcc/x86_64-unknown-linux-gnu/5.2.0
Candidate multilib: .;@m64
Selected multilib: .;@m64
$ clang++ -v
Apple LLVM version 7.0.0 (clang-700.0.72)
Target: x86_64-apple-darwin15.0.0
Thread model: posix</pre>
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</p>
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