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<p class="MsoNormal" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:12.0pt;margin-left:36.0pt">
I'm pretty sure this error is being produced by ghc's own runtime linker, which has a built-in symbol table (essentially just a C array of structs of { "foo", &foo }). This array is built from a bunch of macros such as SymI_HasProto(stg_upd_frame_info), which
used to be present in rts/Linker.c but were moved to rts/RtsSymbols.c in commit abc214b77d. I guess that commit or a related one was not correct. Windows is the only (major?) platform on which the ghc executable is built statically by default, and therefore
uses ghc's own runtime linker.<o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Ah. That sounds very plausible Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">S<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Reid Barton [mailto:rwbarton@gmail.com]
<br>
<b>Sent:</b> 27 October 2015 14:57<br>
<b>To:</b> Ben Gamari<br>
<b>Cc:</b> Simon Peyton Jones; ghc-devs@haskell.org<br>
<b>Subject:</b> Re: stg_upd_frame_info still broken<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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On Tue, Oct 27, 2015 at 10:46 AM, Ben Gamari <<a href="mailto:ben@well-typed.com" target="_blank">ben@well-typed.com</a>> wrote:<o:p></o:p></p>
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Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com">simonpj@microsoft.com</a>> writes:<br>
> I cloned an entirely new GHC repository.<br>
> Then 'sh validate'.<br>
> Same result as before: any attempt to run GHCi fails with an unresolved symbol.<br>
><br>
> bash$ c:/code/HEAD-1/inplace/bin/ghc-stage2 --interactive<br>
><br>
> GHCi, version 7.11.20151026: <a href="https://na01.safelinks.protection.outlook.com/?url=http%3a%2f%2fwww.haskell.org%2fghc%2f&data=01%7c01%7csimonpj%40064d.mgd.microsoft.com%7ce0433e9616f94207642908d2deded4ff%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=RYlwVuvgZKZDInxJ2iDfFNuxK0UX2FGcSeplXjv4Yg0%3d" target="_blank">
http://www.haskell.org/ghc/</a> :? for help<br>
><br>
> ghc-stage2.exe: unable to load package `ghc-prim-0.4.0.0'<br>
><br>
> ghc-stage2.exe: C:\code\HEAD-1\libraries\ghc-prim\dist-install\build\HSghc-prim-0.4.0.0.o: unknown symbol `_stg_upd_frame_info'<br>
><br>
> How could I actually find what the problem is? Trying random things<br>
> and hoping the problem goes away clearly is not working.<br>
><br>
I would first try to find the object file which is supposed to provide<br>
this symbol and figure out whether the problem is one of the RTL<br>
(which is what I would put my money on) or some part of the build<br>
toolchain.<o:p></o:p></p>
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<o:p> </o:p></p>
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I'm pretty sure this error is being produced by ghc's own runtime linker, which has a built-in symbol table (essentially just a C array of structs of { "foo", &foo }). This array is built from a bunch of macros such as SymI_HasProto(stg_upd_frame_info), which
used to be present in rts/Linker.c but were moved to rts/RtsSymbols.c in commit abc214b77d. I guess that commit or a related one was not correct. Windows is the only (major?) platform on which the ghc executable is built statically by default, and therefore
uses ghc's own runtime linker.<o:p></o:p></p>
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I'll try building a Linux ghc with GHC_DYNAMIC=NO and if it exhibits the same problem I should be able to provide a quick fix.<o:p></o:p></p>
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Regards,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:0cm">
Reid Barton<o:p></o:p></p>
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