Re: [GHC] #12513: Template Haskell boxes singleton unboxed tuples when splicing them

#12513: Template Haskell boxes singleton unboxed tuples when splicing them -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: Type: bug | Status: merge Priority: normal | Milestone: 8.0.2 Component: Template Haskell | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC accepts | Unknown/Multiple invalid program | Test Case: th/T12513 Blocked By: | Blocking: Related Tickets: #5332 | Differential Rev(s): Phab:D2462 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ryan Scott ): In [changeset:"acdbd16ffca4f13cfae6eeed045a6fc5969adee2/ghc" acdbd16f/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="acdbd16ffca4f13cfae6eeed045a6fc5969adee2" Move #12403, #12513 users guide notes to 8.2.1 release notes The changes in #12403 and #12513 subtly changed the behavior of Template Haskell reification and splicing. While the old behavior was certainly buggy, it's possible that there's code in the wild that depended on the old behavior to work. To err on the side of caution, I'll postpone these changes to GHC 8.2.1 instead of having them merged into GHC 8.0.2. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12513#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler