http://llvm.org/bugs/show_bug.cgi?id=18969
Bug ID: 18969
Summary: Wrong make_shared picked when boost::make_shared is
imported
Product: clang
Version: 3.3
Hardware: PC
OS: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Created attachment 12149
--> http://llvm.org/bugs/attachment.cgi?id=12149&action=edit
code to reproduce issue
Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
Target: x86_64-apple-darwin13.0.0
Thread model: posix
// clang++ -I/opt/local/include/ make-shared.cc
#include <string>
#include <list>
#include <boost/make_shared.hpp>
class Z
{
public:
explicit
Z(std::string a)
{
}
};
using boost::shared_ptr;
using boost::make_shared;
int main() {
std::string a;
shared_ptr<Z> z = make_shared<Z>(a);
}
This code does not compile with clang++. Compiler complains:
make-shared.cc:22:17: error: no viable conversion from 'shared_ptr<Z>' (aka
'std::__1::shared_ptr<Z>') to 'shared_ptr<Z>' (aka
'boost::shared_ptr<Z>')
libboost is version 1.55 installed from Macports.
It seems that std::__1::make_shared is picked, even if boost::make_shared is
imported to current namespace. This happens only if the Z constructor takes a
STL type such as std::string or std::list<int>. It does not happen if Z
constructor takes an int.
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