#14334: Large static object : getLabelBc: Ran out of labels -------------------------------------+------------------------------------- Reporter: h4ck3rm1k3 | Owner: (none) Type: bug | Status: new Priority: lowest | Milestone: Component: GHCi | Version: 8.0.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: x86_64 | (amd64) Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Description changed by dfeuer: Old description:

stack ghci The following GHC options are incompatible with GHCi and have not been passed to it: -threaded Configuring GHCi with the following packages: gcc-haskell Using main module: 1. Package `gcc-haskell' component exe:gcc-haskell-exe with main-is file: /home/mdupont/experiments/g\ cc-haskell/gcc-haskell/app/Main.hs GHCi, version 8.0.2: http://www.haskell.org/ghc/ :? for help [1 of 3] Compiling LibData ( LibData.hs, interpreted ) ghc: panic! (the 'impossible' happened) (GHC version 8.0.2 for x86_64-unknown-linux): getLabelBc: Ran out of labels

Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug

Compiling this project file here that is basically a large data object emitted from the rdf4h lib. I wanted to put the data into static space to improve load times and remove IO.

https://github.com/h4ck3rm1k3/gcc-haskell/blob/master/src/LibData.hs

New description: {{{ stack ghci The following GHC options are incompatible with GHCi and have not been passed to it: -threaded Configuring GHCi with the following packages: gcc-haskell Using main module: 1. Package `gcc-haskell' component exe:gcc-haskell-exe with main-is file: /home/mdupont/experiments/g\ cc-haskell/gcc-haskell/app/Main.hs GHCi, version 8.0.2: http://www.haskell.org/ghc/ :? for help [1 of 3] Compiling LibData ( LibData.hs, interpreted ) ghc: panic! (the 'impossible' happened) (GHC version 8.0.2 for x86_64-unknown-linux): getLabelBc: Ran out of labels Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} Compiling this project file here that is basically a large data object emitted from the rdf4h lib. I wanted to put the data into static space to improve load times and remove IO. https://github.com/h4ck3rm1k3/gcc-haskell/blob/master/src/LibData.hs -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14334#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#14334: Large static object : getLabelBc: Ran out of labels -------------------------------+-------------------------------------- Reporter: h4ck3rm1k3 | Owner: (none) Type: bug | Status: new Priority: lowest | Milestone: Component: GHCi | Version: 8.0.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------+-------------------------------------- Comment (by h4ck3rm1k3): Reducing the size of the static data of course solves this problem. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14334#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#14334: Large static object : getLabelBc: Ran out of labels -------------------------------+-------------------------------------- Reporter: h4ck3rm1k3 | Owner: (none) Type: bug | Status: infoneeded Priority: lowest | Milestone: Component: GHCi | Version: 8.0.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------+-------------------------------------- Comment (by h4ck3rm1k3): Sorry about that, I removed all local deps and cleaned up the code so that it compiles ok. Please check again. Sorry to waste your time. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14334#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#14334: Large static object : getLabelBc: Ran out of labels -------------------------------+-------------------------------------- Reporter: h4ck3rm1k3 | Owner: (none) Type: bug | Status: new Priority: lowest | Milestone: Component: GHCi | Version: 8.0.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------+-------------------------------------- Changes (by bgamari): * cc: Jaffacake (added) Comment: Hmm, this is a bit tricky; the trouble is the GHCi bytecode only has room for 16-bit labels. I suspect the most sensible option would be to break up large BCO objects during ByteCodeGen, but this sounds slightly non- trivial. Simon, any thoughts? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14334#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#14334: Large static object : getLabelBc: Ran out of labels -------------------------------+-------------------------------------- Reporter: h4ck3rm1k3 | Owner: (none) Type: bug | Status: new Priority: lowest | Milestone: Component: GHCi | Version: 8.0.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------+-------------------------------------- Comment (by bgamari): I believe we pass Core to the byte-code generator as a whole module. I suspect breaking your list into multiple, moderately-sized modules would be one potential workaround. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14334#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler