[LLVMbugs] [Bug 16285] New: Cannot initialize const reference function argument with braced-init-list

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16285

            Bug ID: 16285
           Summary: Cannot initialize const reference function argument
                    with braced-init-list
           Product: clang
           Version: 3.2
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++11
          Assignee: unassignedclangbugs at nondot.org
          Reporter: vanboxem.ruben at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

This code fails when using Clang 3.2 and current ToT, and using GCC 4.6 and
4.8's libstdc++:

#include <unordered_set>

void lol(const std::unordered_set<double>& yodel = {}) {}

int main()
{
  lol();
}

GCC accepts this since 4.7. Also see:

http://stackoverflow.com/questions/6615823/uniform-initializer-used-in-default-argument-to-const-reference
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3139.pdf

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