#8316: GHCi debugger panics when trying force a certain variable -------------------------------------+------------------------------------- Reporter: guest | Owner: (none) Type: bug | Status: new Priority: high | Milestone: Component: GHCi | Version: 7.6.3 Resolution: | Keywords: debugger Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4535, Wiki Page: | Phab:D5179 -------------------------------------+------------------------------------- Description changed by osa1: Old description:
The file Test.hs has following definition: {{{ foo :: [Int] foo = [1..] }}}
Calling ghci as: {{{ ghci Test.hs -ignore-dot-ghci }}}
and bebugging foo like this: {{{ *Main> :break foo Breakpoint 0 activated at main.hs:2:7-11 *Main> foo Stopped in Main.foo, main.hs:2:7-11 _result :: [Int] = _ [main.hs:2:7-11] *Main> :print foo foo = (_t1::[Int]) [main.hs:2:7-11] *Main> _t1 }}}
results in this segault: {{{ <interactive>: internal error: TSO object entered! (GHC version 8.5.20180302 for x86_64_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug [1] 5445 abort (core dumped) ghci Test.hs -ignore-dot-ghci }}}
New description: The file Test.hs has following definition: {{{ foo :: [Int] foo = [1..] }}} Calling ghci as: {{{ ghci Test.hs -ignore-dot-ghci }}} and bebugging foo like this: {{{ *Main> :break foo Breakpoint 0 activated at main.hs:2:7-11 *Main> foo Stopped in Main.foo, main.hs:2:7-11 _result :: [Int] = _ [main.hs:2:7-11] *Main> :print foo foo = (_t1::[Int]) [main.hs:2:7-11] *Main> _t1 }}} results in this panic: {{{ <interactive>: internal error: TSO object entered! (GHC version 8.5.20180302 for x86_64_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug [1] 5445 abort (core dumped) ghci Test.hs -ignore-dot-ghci }}} -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8316#comment:20 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler