#11315: GHC doesn't restore split objects -------------------------------------+------------------------------------- Reporter: snowleopard | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by ezyang): The problem is, even though `A_o_split` is supposed to be considered output of compilation, the recompilation checkers for `--make` and `-c` (the ones that determine if the source is modified) only look at the merged `o` file (not the split objects) to see if they've gone away. Distressingly, in the current scheme, it is unobvious whether or not a split object directory is complete or not. So this suggests that we have to atomically output some digest describing all of the split objects we expect to see. Recompilation avoidance, when running in split objects mode, checks to see if the digest is newer than the source file, and that all the files in the digest exist. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11315#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler