[Issue 20471] TypeInfo_Array incorrectly initialized

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20471

kinke <kinke at gmx.net> changed:

           What    |Removed                     |Added
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                 CC|                            |kinke at gmx.net

--- Comment #3 from kinke <kinke at gmx.net> ---
(In reply to Simen Kjaeraas from comment #2)
> The leaf node in the stack trace is object.TypeInfo_Array.toString()

I think that's a wrong lead due to a faulty stacktrace. The interesting bit is

> core.exception.RangeError at dmd\root\array.d(226): Range violation

That comes from an invalid index into a dmd.root.array.Array instance
(https://github.com/dlang/dmd/blob/v2.090.0/src/dmd/root/array.d#L226).

The next frame in the stacktrace seems reasonable, pointing to
https://github.com/dlang/dmd/blob/v2.090.0/src/dmd/dsymbolsem.d#L3655:

FuncDeclaration fdc = cd.vtbl[vi].isFuncDeclaration();

suggesting an invalid vi index.

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