Resolve underlying type to detect overflows in type aliases

[gartnera]

Calling Underlying() will get the underlying type if there is one.

This allows correctly testing for overflows with type aliases.

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.52%. Comparing base (4487a0c) to head (01c7d9a).

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1170   +/-   ##
=======================================
  Coverage   69.52%   69.52%           
=======================================
  Files          71       71           
  Lines        3865     3865           
=======================================
  Hits         2687     2687           
  Misses       1061     1061           
  Partials      117      117           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.