[LLVMbugs] [Bug 20874] New: braced initializer lists not properly identified in variadic templates

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=20874

            Bug ID: 20874
           Summary: braced initializer lists not properly identified in
                    variadic templates
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: danalbert at google.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Using trunk clang/llvm/libc++:

#include <memory>
#include <vector>

class A {
public:
  A(int i, std::vector<int> v) : i(i), v(v) {
  }

private:
  int i;
  std::vector<int> v;
};

class B {
public:
  B(int a, int b) : a(a), b(b) {
  }

private:
  int a;
  int b;
};

int main() {
  // This one fails with:
  // /usr/local/bin/../include/c++/v1/memory:4628:1: note: candidate function
  // not viable: requires single argument '__args', but 2 arguments were
  // provided
  // make_shared(_Args&& ...__args)
  auto a1 = std::make_shared<A>(42, {0, 1});

  // This one is okay:
  auto a2 = std::shared_ptr<A>(new A(42, {0, 1}));

  // Both of these are okay:
  auto b1 = std::make_shared<B>(0, 1);
  auto b2 = std::shared_ptr<B>(new B(0, 1));
}

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