Matthew Pickering authored Jan 03, 2017 and Ben Gamari committed Jan 03, 2017

($) is special as Richard explains in the note at the top of the page.

However, when adding the note he didn't remove this usage. Normally it
didn't cause any problems as the optimiser optimised it away. However if
one had the propensity to stick one's fingers into the depths of the
inliner, it caused horrible idInfo panics.

Reviewers: rwbarton, hvr, austin, bgamari

Reviewed By: bgamari

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D2913

GHC Trac Issues: #13055