#13110: GHC API allocates memory which is never GC'd -------------------------------------+------------------------------------- Reporter: DanielG | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: GHC API | Version: 8.0.2 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 DanielG): I just tried with master (c7297342a4) and the ghc-8.2 branch (befd937353) and I can still reproduce this. As I said above resetting the string table doesn't seem to improve the steady state memory usage at all. I made the test case a little easier to use and I'm including the patch I used to expose the `string_table`. With `ghc-expose-string-table.patch` applied you can reproduce this in a GHC source tree like so: {{{ $ ./inplace/bin/ghc-stage2 -package ghc LeakyResetStringTable2.hs -rtsopts -with-rtsopts=-T $ ./LeakyResetStringTable gcdetails_live (MB): 0.443450927734375 gcdetails_mem_in_use (MB): 81.0 VmData (MB): 246.2578125 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13110#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler