[Issue 19248] Wrong mangle for C++ const STL classes/structs

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19248

--- Comment #1 from Илья Ярошенко <ilyayaroshenko at gmail.com> ---
https://github.com/dlang/dmd/pull/8700

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