[Issue 19829] __traits(isSame) returns true for some non-local delegate lambdas even when they are different

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19829

ag0aep6g <ag0aep6g at gmail.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |wrong-code
                 CC|                            |ag0aep6g at gmail.com

--- Comment #1 from ag0aep6g <ag0aep6g at gmail.com> ---
Two observations:

1) This prints "true" even though the two lambdas are clearly not the same:

    pragma(msg, __traits(isSame, i => x[i], a => a));

This is a bug in itself.

2) In the original code, when I move `arr` to global scope, then all writelns
correctly print "Different".

This suggests that, in the context of `test` and __traits(isSame, ...), map1
might be considered to not have access to arr.

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