<valarray>: VS doesn't trigger the assertion when the data out of bound in std::valarray

[AlexGuteniev]

Describe the bug
valarray does not trigger run-time debug assertion.

Command-line test case

D:\Temp2>type repro.cpp
#include <iostream>
#include <valarray>

int main() {
    std::valarray<int> v(1, 1);
    std::cout << v[1] << '\n';
}
D:\Temp2>cl /D "_DEBUG" /MDd /EHsc /W4 /WX .\repro.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 19.27.29009.1 for x86
Copyright (C) Microsoft Corporation.  All rights reserved.

repro.cpp
Microsoft (R) Incremental Linker Version 14.27.29009.1
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:repro.exe
repro.obj

D:\Temp2>.\repro
-33686019

Expected behavior
Assertion failure

STL version

Microsoft Visual Studio Professional 2019 Preview
Version 16.7.0 Preview 3.1

Additional context
This item is also tracked on Developer Community as DevCom-364060 and by Microsoft-internal VSO-715060 / AB#715060.

[AlexGuteniev]

This might be wider problem in cases of array-to-view, view-to-array or view-to-view assignment. Some of those cases aren't even specified in standard though. Sound like a separate issue though.