http://llvm.org/bugs/show_bug.cgi?id=19591

            Bug ID: 19591
           Summary: suggest std::move
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++11
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected], [email protected]
    Classification: Unclassified

$ cat a.cc
#include <memory>

void f(std::unique_ptr<int> i) {
  std::unique_ptr<int> j = i;
}

$ clang a.cc -std=c++11
a.cc:4:24: error: call to deleted constructor of 'std::unique_ptr<int>'
  std::unique_ptr<int> j = i;
                       ^   ~
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/bits/unique_ptr.h:256:7:
note: 
      'unique_ptr' has been explicitly marked deleted here
      unique_ptr(const unique_ptr&) = delete;
      ^
1 error generated.

Could we detect that there is a rvalue-reference constructor and suggest that
the user may have wanted to use it (or std::move)?

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