[llvm-bugs] [Bug 46005] New: Name mangling problem when initializing inline std::function with lambda

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46005

            Bug ID: 46005
           Summary: Name mangling problem when initializing inline
                    std::function with lambda
           Product: clang
           Version: 10.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: leandro.medina at sandboxsemiconductor.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

The code

#include <functional>

inline auto x = std::function<void()>([]() {});
inline auto y = std::function<void()>([]() {});

int main() { return 0; }

fails to compile with the following error message: 

error: definition with same mangled name
     
'??$_Reset at V<lambda_1>@@@?$_Func_class at X$$V at std@@IEAAX$$QEAV<lambda_1>@@@Z' as
another definition

I'm using the STL implementation that shipped with Visual Studio 16.5.5. The
above compiles ok on gcc (both Linux based and mingw-w64), MSVC, and Clang with
libstdc++.

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