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SIGSEGV (address boundary error) in Mac OS when encountering Template Haskell splice #469
Comments
For a commit of the project on which |
If this is relevant, here’s the code generated by the splice:
|
Remembered that is probably a duplicate of https://github.com/haskell/ghcide/issues/775 |
It is almost identical so i would close one of both (the older one?) |
Could be related to https://github.com/haskell/ghcide/issues/854 |
This one may be fixed in master (and the incoming hls 0.5 release) via ghcide-0.5, @patrickt could you check if master fix the issue for you? |
@jneira I’m afraid not; compiling with the latest HEAD gives me
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Oh, thanks for trying it anyways, i am afraid that th support needs more work to be reliable enough 😟 |
Some more information: here’s the DWARF backtrace (EDIT: the line numbers here don’t seem to be hugely reliable)
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@bgamari any idea what is going on here? |
A debug print of the
|
I think it would be useful if you compiled ghcide with |
BTW, the original code snippet you linked to doesn't point to any Template Haskell anymore. |
@wz1000 Fixed the original code snippet. Building with |
@wz1000 The result of executing |
Huh, I can't reproduce this locally on linux with |
I'd like to advance the theory that this might be restricted to MacOS. My colleague is also experiencing something like this on Mac, but if I try on Linux with her exact same project, I cannot repro. I'm about to dust off my old Mac to see if there's any credibility to this idea. |
It would be helpful if someone could come up with a test case that fails on the newly added MacOS CI on |
The test case that is failing for my colleague is actually quite easy to produce:
|
The backtrace is super useful. It might be possible to repro without ghcide, if you have a ghc binary built with And if you link ghcide/HLS with |
@ProofOfKeags @wz1000 Good to hear that this doesn’t repro on Linux: given that this this is dying in the guts of relocating sections in Mach-O executables, we can assume it’s something macOS specific. |
@pepeiborra Wow, compiling with |
@patrickt @pepeiborra do you just put the -dynamic flag in hls' cabal file? or is this something that goes into the various |
@ProofOfKeags Run |
Dynamic linking fixed this for us too. So am I to understand that this issue is in GHC? |
Yes, GHC has its own dynamic linker, in the rts, and it gets used in certain cases:
Implementing a dynamic linker with support for >=3 platforms is a risky and complex exercise. Fortunately there is an easy opt-out ( As I mentioned it would be great if you can minify this bug and report it upstream in GHC. |
+1 Confirmed the |
+1. It solved an issue with Template Haskell. HLS was reporting an issue with the linux ld object, that it could not find.
Adding Now I still have useless warning waves under quasiquotes of template haskell though. |
Where did you local GHC installation come from? Is it a custom build with |
Strange, I think I really use My ghc comes from |
I’ve filed a bug upstream to inform about the dynamic linker issue. Anyone who wanted to help minimize the test case would win my infinite gratitude. |
isTesting got added to ShakeExtras unnecessarily
I am gonna close this issue as all compiler crashes seems to have the same root cause:
If any of you think the issue should not be included generically feel free to reopen it (with a brief explanation if possible) |
Subject of the issue
I encounter segfaults when attempting to run
haskell-language-server-wrapper
in the root of my project (or from within my editor). They only go away when I remove this Template Haskell invocation.I have tried removing the
~/.cache/ghcide
folder, ensuring there are no oldhaskell-language-server
binaries on my PATH, and adding acabal.project
to the project. This happens with versions 0.4 and 0.5. I’m using the latest release of macOS.EDIT: compiling haskell-language-server from source, passing in
--enable-executable-dynamic
toconfigure
, appears to be a successful workaround.Your environment
Which lsp-client do you use
Emacs (though this happens at the command line)
Describe your project (alternative: link to the project)
https://github.com/patrickt/possession
Steps to reproduce
Expected behaviour
Successful project compilation
Actual behaviour
Include debug information
Debug output:
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