[Issue 13931] Missing overflow checks in `std.conv` for negative numbers which start from the most negative number digits

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13931

--- Comment #1 from Denis Shelomovskij <verylonglogin.reg at gmail.com> ---
https://github.com/D-Programming-Language/phobos/pull/2840

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