[Issue 16051] New: ICE with nested functions and template alias parameter

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16051

          Issue ID: 16051
           Summary: ICE with nested functions and template alias parameter
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Keywords: ice, ice-on-valid-code
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: bugzilla at kyllingen.net

Test case:

    void fun(alias a)()
    {
        auto dg = () {
            void gun() { }
            a(&gun);
        };
    }

    void main()
    {
        void hun(R)(R) { }
        fun!hun();
    }

This results in the following ICE:

    dmd: toir.c:249: elem* getEthis(Loc, IRState*, Dsymbol*): Assertion
`thisfd->isNested() || thisfd->vthis' failed.

This is possibly a duplicate of issue #12839, as it apparently causes the same
assertion to fail, but I'm not sure.  The test case seems different enough that
I decided to open a new bug report for it.

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