#15543: Binary crashes under dtrace -------------------------------------+------------------------------------- Reporter: last_g | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Research needed Component: Compiler | Version: 8.4.3 Keywords: dtrace, crash | Operating System: MacOS X Architecture: | Type of failure: Runtime crash Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- When I'm trying to attach to the simple binary with DTrace command ({{{sudo dtrace -n 'pid$1:::' `ps aux | grep FibbSlow | grep -v grep | awk '{print $2}'` }}}) it crashes with various outcomes. This happens on both GHC 8.4.3 from `stack` and manually built ghc from the master branch. Crashes: {{{ lastg-mbp:t lastg$ ./FibbSlow.master 55 FibbSlow.master: internal error: scavenge: unimplemented/strange closure type 13369548 @ 0x420021abb0^[[B (GHC version 8.7.20180817 for x86_64_apple_darwin) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} {{{ lastg-mbp:t lastg$ ./FibbSlow.stack.8.4 55 FibbSlow.stack.8.4: internal error: scavenge_one: strange object 13369548 (GHC version 8.4.3 for x86_64_apple_darwin) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Abort trap: 6 }}} {{{ lastg-mbp:t lastg$ ./FibbSlow.stack.8.4 55 FibbSlow.stack.8.4: internal error: scavenge_one: strange object 13369548 (GHC version 8.4.3 for x86_64_apple_darwin) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Abort trap: 6 }}} {{{ lastg-mbp:t lastg$ ./FibbSlow.stack.8.4 55 Segmentation fault: 11 }}} Source code for the binary: https://gist.github.com/last-g/cfddab60a8520eb51214ef2a7bc48ec2 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15543 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler