#9003: GHC eventlog: thread stop status codes modified (breaking ghc-events, threadscope, edentv) -------------------------------+------------------------------------------- Reporter: jberthold | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: 7.8.3 Component: Runtime | Version: 7.8.2 System | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Easy (less than 1 hour) Unknown/Multiple | Blocked By: Type of failure: Other | Related Tickets: Test Case: | Blocking: | -------------------------------+------------------------------------------- Changes (by jberthold): * cc: jberthold (added) Comment: Like the GHC-6.x tid field length problem, any solution to the problem requires baking in knowledge of GHC version differences into ghc-events (might break other software that writes event log format). A fix in ghc-events is possible (the fork ghc-events-parallel has been fixed like this as a temporary solution): EVENT_USER_MARKER was added after the 7.6 branch, so the ghc-events parser can use it as an indication to use different thread stop state decoders. When fixing it like this, however, older tools will always yield the error. OTOH, when reverting to the original encoding in GHC (fix inside GHC), one needs to reliably detect GHC-7.8.2 and distinguish it from subsequent versions. Again by adding a new event type in master and GHC-7.8.3. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9003#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler