[llvm-bugs] [Bug 39769] New: Generic lambda in variable template in class template does not compile

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=39769

            Bug ID: 39769
           Summary: Generic lambda in variable template in class template
                    does not compile
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++14
          Assignee: unassignedclangbugs at nondot.org
          Reporter: sidney.congard at gmail.com
                CC: blitzrakete at gmail.com, erik.pilkington at gmail.com,
                    llvm-bugs at lists.llvm.org, richard-llvm at metafoo.co.uk

I encountered a bug on Clang trunk (from Godbolt) where a template variable
defined inside a template class created with a generic lambda does not compile.
I got this message :

note : candidate template ignored: couldn't infer template argument ''
    static constexpr auto var = [] (auto i) {

                                ^

Having a non-template class, a non-template variable or a non-generic lambda
will make it compile.

I reproduced the case here :
https://godbolt.org/z/tINemW

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