#13360: Add a flag to enable inferring HasCallStack constraints -------------------------------------+------------------------------------- Reporter: gridaphobe | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 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 bgamari):
And worse, there doesn't seem to be any reason to expect a size heuristic to produce a proper chain of callstack-aware functions.
Ahh, yes, that's a good point. Unlike cost centers, if you miss any link in the chain you lose all locations "above" the missing link.
Well, cost-center stacks require the entire world to have been compiled with -prof, which can be pretty time-consuming.
Okay, fair enough. Personally I have configured Cabal to always profiled libraries so the cost generally isn't so high. I suppose if you don't do this switching to profiling would be rather painful, however. It's a shame that profiled code must be so incompatible with unprofiled. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13360#comment:35 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler