[llvm-bugs] [Bug 31647] Clang-cl: conversion from 'long' to 'const QVariant' is ambiguous

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31647

David Majnemer <david.majnemer at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |david.majnemer at gmail.com
         Resolution|---                         |INVALID

--- Comment #2 from David Majnemer <david.majnemer at gmail.com> ---
I can't reproduce with:
clang version 5.0.0 (trunk 291737) (llvm/trunk 292034)

$ cat t.cpp
namespace {
    struct A {
        A(int) {}
        A(unsigned int) {}
        A(long long) {}
        A(unsigned long long) {}
        A(bool) {}
        A(float) {}
        A(double) {}
    };
    long getLong() { return 42; }
    void f(const A &) {}
}

int main(int, char **)
{
    long l = 42;
    f(l);
    return 0;
}
$ ~/llvm/Release+Asserts/bin/clang-cl t.cpp
t.cpp(18,7) :  error: conversion from 'long' to 'const (anonymous
namespace)::A' is ambiguous
    f(l);

AFAICT, your code is not supposed to compile. The fact that MSVC does is most
likely indicative of a bug in that product.

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