Stacktraces

In the previous article we took apart the select statement and saw how it’s really two features in one, with the compiler rewriting the easy shapes away and only the hard cases falling through to the runtime’s selectgo . The recurring theme there was coordination — the compiler and the runtime each doing half the work and meeting in the middle. Today we’re going to lean on a similar kind of cooperation between build time and run time, and switch gears to something every Go programmer has stared at: stacktraces.