[LLVMbugs] [Bug 22922] New: Allocator support for std::function does not know how to rebind

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=22922

            Bug ID: 22922
           Summary: Allocator support for std::function does not know how
                    to rebind
           Product: libc++
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: tkoeppe at google.com
                CC: llvmbugs at cs.uiuc.edu, mclow.lists at gmail.com
    Classification: Unclassified

The HEAD version of libc++'s function does not rebind allocators correctly when
using an allocator-extended constructor such as:

    std::function<void()> f(std::allocator_arg, alloc,
                            [](){std::cout << "works\n";});

It will try to use "_Alloc::template rebind" rather than
"std::allocator_traits<_Alloc>::rebind".

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