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Ryan Scott authored
Summary: CTimer is a wrapper around `timer_t`, which is a typedef for `void*` on most platforms. The issue is that GHC's `FPTOOLS_CHECK_HTYPE` is not robust enough to discern pointer types from non-pointer types, so it mistakenly labels `timer_t` as a `Double` or `Int32` (depending on how many bits a pointer takes up on your platform). This wreaks havoc when trying to give it certain type class instances, as noted in https://phabricator.haskell.org/rGHCffc2327070dbb664bdb407a804121eacb2a7c734. For now, the simplest thing to do would be removing `CTimer`, since: 1. The original author (@DanielG) didn't have a particular use in mind for `timer_t` when he fixed #12795. 2. `CTimer` hasn't appeared in a release of `base` yet. Fixes #12998. Reviewers: austin, hvr, bgamari, DanielG, trofi Reviewed By: bgamari, trofi Subscribers: thomie, DanielG, erikd Differential Revision: https://phabricator.haskell.org/D2876 GHC Trac Issues: #12795, #12998
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