#15529: runtime bug when profiling retainers -------------------------------------+------------------------------------- Reporter: flip101 | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 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 RyanGlScott): Ugh, we really ought to be printing ought what closure types are tripping up these RTS panics. I've submitted Phab:D5072 to do so for `pop()` at least. With a version of GHC built with Phab:D5072 applied, if I try running `vfix +RTS -hr -sstderr`, then I get the following information: {{{ vfix: internal error: Invalid object *c in pop(): 62 (GHC version 8.7.20180816 for x86_64_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Aborted (core dumped) }}} It looks like closure type 62 [http://git.haskell.org/ghc.git/blob/5238f204482ac7f05f4e2d2e92576288cc00d42d... corresponds to] `SMALL_MUT_ARR_PTRS_FROZEN_CLEAN`. Any ideas there? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15529#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler