isocpp / isocpp/CppCoreGuidelines

Should narrowing do something special for integer types (was: Should narrowing failures throw)

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@BjarneStroustrup is already working on this.

Since Dec 5, 2019.

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Description

Consider whether throwing is the correct way to get information about narrowing failure. See GSL PR: microsoft/GSL#761

For example: we are concerned about whether or not to pull header iostreams for more rich exceptions. The example information in that PR looks useful but if the narrow_cast did a fail fast the programmer would have the information w/o adding it in string form to the exception.

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