Cheng Shao pushed to branch wip/no-binary-char-2 at Glasgow Haskell Compiler / GHC Commits: 3bfe7aa2 by Matthew Pickering at 2025-12-07T12:18:57-05:00 ci: Try using multi repl in ghc-in-ghci test This should be quite a bit faster than the ./hadrian/ghci command as it doesn't properly build all the dependencies. - - - - - 2ef1601a by Rodrigo Mesquita at 2025-12-07T12:19:38-05:00 Stack.Decode: Don't error on bitmap size 0 A RET_BCO may have a bitmap with no payload. In that case, the bitmap = 0. One can observe this by using -ddump-bcos and interpreting ``` main = pure () ``` Observe, for instance, that the BCO for this main function has size 0: ``` ProtoBCO Main.main#0: \u [] breakmain:Main,0() GHC.Internal.Base.pure GHC.Internal.Base.$fApplicativeIO GHC.Internal.Tuple.() bitmap: 0 [] BRK_FUN <breakarray> main:Main 0 <cc> PACK () 0 PUSH_G GHC.Internal.Base.$fApplicativeIO PUSH_APPLY_PP PUSH_G GHC.Internal.Base.pure ENTER ``` Perhaps we never tried to decode a stack in which a BCO like this was present. However, for the debugger, we want to decode stacks of threads stopped at breakpoints, and these kind of BCOs do get on a stack under e.g. `stg_apply_interp_info` frames. See the accompanying test in the next commit for an example to trigger the bug this commit fixes. Fixes #26640 - - - - - 747153d2 by Rodrigo Mesquita at 2025-12-07T12:19:38-05:00 Add test for #26640 - - - - - 30fce6eb by Cheng Shao at 2025-12-08T08:08:00+01:00 WIP - - - - - 55ac0a5c by Cheng Shao at 2025-12-08T08:08:00+01:00 WIP - - - - - 3e30e7ea by Cheng Shao at 2025-12-08T09:09:31+01:00 WIP - - - - - 54 changed files: - .gitlab-ci.yml - compiler/GHC/ByteCode/Breakpoints.hs - compiler/GHC/Core/Opt/CallerCC/Types.hs - compiler/GHC/Core/TyCo/Rep.hs - compiler/GHC/Data/FastString.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Hs/Doc.hs - compiler/GHC/Hs/DocString.hs - compiler/GHC/HsToCore/Breakpoints.hs - compiler/GHC/HsToCore/Docs.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/HsToCore/Usage.hs - compiler/GHC/Iface/Binary.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Ext/Fields.hs - compiler/GHC/Iface/Ext/Types.hs - compiler/GHC/Iface/Flags.hs - compiler/GHC/Iface/Load.hs - compiler/GHC/Iface/Recomp.hs - compiler/GHC/Iface/Recomp/Flags.hs - compiler/GHC/Iface/Type.hs - compiler/GHC/Linker/Loader.hs - compiler/GHC/Platform/Profile.hs - compiler/GHC/Runtime/Debugger/Breakpoints.hs - compiler/GHC/Stg/Debug.hs - compiler/GHC/Stg/Debug/Types.hs - compiler/GHC/StgToJS/Linker/Linker.hs - compiler/GHC/StgToJS/Object.hs - compiler/GHC/Types/Literal.hs - compiler/GHC/Unit/Info.hs - compiler/GHC/Unit/Module/Deps.hs - compiler/GHC/Unit/Module/WholeCoreBindings.hs - compiler/GHC/Unit/State.hs - compiler/GHC/Utils/Binary.hs - compiler/GHC/Utils/Binary/Typeable.hs - compiler/GHC/Utils/BufHandle.hs - compiler/GHC/Utils/Outputable.hs - compiler/GHC/Utils/Ppr.hs - ghc/GHCi/UI.hs - libraries/ghc-boot/GHC/Data/ShortText.hs - libraries/ghc-internal/src/GHC/Internal/Stack/Decode.hs - + testsuite/tests/bytecode/T26640.hs - + testsuite/tests/bytecode/T26640.script - + testsuite/tests/bytecode/T26640.stdout - testsuite/tests/bytecode/all.T - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml.hs - utils/haddock/haddock-api/src/Haddock/Interface/Create.hs - utils/haddock/haddock-api/src/Haddock/Interface/Json.hs - utils/haddock/haddock-api/src/Haddock/Interface/LexParseRn.hs - utils/haddock/haddock-api/src/Haddock/Interface/ParseModuleHeader.hs - utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs - utils/haddock/haddock-api/src/Haddock/Types.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/82d390b5649b4de95ba99f50da6059d... -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/82d390b5649b4de95ba99f50da6059d... You're receiving this email because of your account on gitlab.haskell.org.