[LLVMbugs] [Bug 10043] New: Failure to warn about inaccessible copy constructor of member of class in -Wbind-to-temporary-copy

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10043

           Summary: Failure to warn about inaccessible copy constructor of
                    member of class in -Wbind-to-temporary-copy
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: scshunt at csclub.uwaterloo.ca
        ReportedBy: chandlerc at gmail.com
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


Consider the following code:

% cat y.cc
struct X {
  X();
private:
  X(const X&) {};
};
struct Y {
  X x;
};
struct Z {
  Z();
  X x;
private:
  Z(const Z&);
};

extern void f(const X&);
extern void g(const Y&);
extern void h(const Z&);

void test() {
  f(X());
  g(Y());
  h(Z());
}

% ./bin/clang -fsyntax-only -std=c++98 -Wall y.cc
y.cc:21:5: warning: C++98 requires an accessible copy constructor for class 'X'
when binding a reference to a temporary; was private [-Wbind-to-temporary-copy]
  f(X());
    ^
y.cc:4:3: note: declared private here
  X(const X&) {};
  ^
y.cc:23:5: warning: C++98 requires an accessible copy constructor for class 'Z'
when binding a reference to a temporary; was private [-Wbind-to-temporary-copy]
  h(Z());
    ^
y.cc:13:3: note: declared private here
  Z(const Z&);
  ^
2 warnings generated.

Why doesn't g(Y()) warn? I feel certain that it used to; I think this is a
regression due to the recent work done on copy constructors, especially
implicit ones...

-- 
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.