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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Indeed – but it’s up to Moritz. I don’t want to back out the patch myself, in case that messes up what he’s doing. He’ll best placed to decide the least disruptive way forward<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">S<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Mathieu Boespflug <m@tweag.io>
<br>
<b>Sent:</b> 16 July 2020 15:50<br>
<b>To:</b> Simon Peyton Jones <simonpj@microsoft.com><br>
<b>Cc:</b> ghc-devs@haskell.org; Moritz Angermann <moritz.angermann@gmail.com>; Ben Gamari <bgamari@gmail.com><br>
<b>Subject:</b> RE: HEAD doesn't build. Totally stalled.<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Perhaps back out the offending patch from master in the meantime?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Jul 16, 2020 at 16:47:03, Simon Peyton Jones <<a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-fareast-language:EN-US">I could carry out experiments for you …</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-fareast-language:EN-US">Regardless, some stop-gap fix would be helpuf.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Moritz Angermann <<a href="mailto:moritz.angermann@gmail.com" target="_blank">moritz.angermann@gmail.com</a>>
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<b>Sent:</b> 16 July 2020 15:45<br>
<b>To:</b> Ben Gamari <<a href="mailto:bgamari@gmail.com" target="_blank">bgamari@gmail.com</a>>; Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>><br>
<b>Cc:</b> <a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a><br>
<b>Subject:</b> Re: HEAD doesn't build. Totally stalled.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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I’ve tried to reproduce this and it turns out, I fail to. You are somehow building the rts either with _FORTYFY_SOURCE or __SSP__, but then your linker ends up not passing -lssp or the equivalent for your tool chain.<o:p></o:p></p>
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At this point I’m tempted to add an additional ARM arch guard. While that would be conceptually wrong, it would reduce the cases where this could go wrong to a rarely used platform. Maybe @Ben Gamari has an idea?<o:p></o:p></p>
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On Thu, 16 Jul 2020 at 10:25 PM, Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Moritz<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">How’s it going getting this patch committed?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">It’s painful manually applying a fix, but then NOT committing that to master by mistake<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">s<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Moritz Angermann <<a href="mailto:moritz.angermann@gmail.com" target="_blank">moritz.angermann@gmail.com</a>>
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<b>Sent:</b> 14 July 2020 12:14<br>
<b>To:</b> Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>><br>
<b>Cc:</b> <a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a><br>
<b>Subject:</b> Re: HEAD doesn't build. Totally stalled.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">For some reason, you end up in the defined RTS_SSP_SYMBOLS, I believe and then the RTS wants __stack_chk symbols. Which it can’t find when linking. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">Replacing<o:p></o:p></p>
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<pre style="word-wrap:break-word;white-space:pre-wrap">#if !defined(mingw32_HOST_OS) && !defined(DYNAMIC)<o:p></o:p></pre>
<pre>#define RTS_SSP_SYMBOLS \<o:p></o:p></pre>
<pre> SymI_NeedsProto(__stack_chk_guard) \<o:p></o:p></pre>
<pre> SymI_NeedsProto(__stack_chk_fail)<o:p></o:p></pre>
<pre>#else<o:p></o:p></pre>
<pre>#define RTS_SSP_SYMBOLS<o:p></o:p></pre>
<pre>#endif<o:p></o:p></pre>
<pre style="word-wrap:break-word;white-space:pre-wrap">With just<o:p></o:p></pre>
<pre style="word-wrap:break-word;white-space:pre-wrap"> <o:p></o:p></pre>
<pre style="word-wrap:break-word;white-space:pre-wrap">#define RTS_SSP_SYMBOLS<o:p></o:p></pre>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Should do. I hope. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Currently only on mobile phone :-/<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Cheers,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> Moritz<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Tue, 14 Jul 2020 at 7:06 PM, Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">thanks. What specifically do I comment out?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Moritz Angermann <<a href="mailto:moritz.angermann@gmail.com" target="_blank">moritz.angermann@gmail.com</a>>
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<b>Sent:</b> 14 July 2020 12:00<br>
<b>To:</b> Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>><br>
<b>Cc:</b> <a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a><br>
<b>Subject:</b> Re: HEAD doesn't build. Totally stalled.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">This was my fault. Not sure why this wasn’t caught in CI. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">It’s due to the addition of the symbols here<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"><a href="https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fghc%2Fghc%2Fcommit%2F686e72253aed3880268dd6858eadd8c320f09e97%23diff-03f5bc5a50fd8ae13e902782c4392c38R1159&data=02%7C01%7Csimonpj%40microsoft.com%7Cfe3793e59fa24b1203da08d829977b95%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637305077875360775&sdata=w9%2Fhwx19Qm5sVTXCcz63uOFGzUY0WeLKhSK%2BKNkakpA%3D&reserved=0" target="_blank">https://github.com/ghc/ghc/commit/686e72253aed3880268dd6858eadd8c320f09e97#diff-03f5bc5a50fd8ae13e902782c4392c38R1159</a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">You should be able to just comment them out. I’ll prepare a proper fix. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">Cheers,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"> Moritz <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:6.0pt">On Tue, 14 Jul 2020 at 6:41 PM, Simon Peyton Jones via ghc-devs <<a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’m getting this failure in a clean HEAD build. Any ideas? I’m totally stalled because I can’t build GHC any more.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’m using Windows Subsystem for Linux (WSL).<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Help help!<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Simon<o:p></o:p></p>
<p class="m3956436459974820273m-778775121447864626m-8780510408337222857code"><span style="color:red">/home/simonpj/code/HEAD-9/rts/dist/build/libHSrts_thr_p.a(RtsSymbols.thr_p_o): RtsSymbols.c:rtsSyms: error: undefined reference to '__stack_chk_guard'</span><o:p></o:p></p>
<p class="m3956436459974820273m-778775121447864626m-8780510408337222857code">collect2: error: ld returned 1 exit status<o:p></o:p></p>
<p class="m3956436459974820273m-778775121447864626m-8780510408337222857code">`cc' failed in phase `Linker'. (Exit code: 1)<o:p></o:p></p>
<p class="m3956436459974820273m-778775121447864626m-8780510408337222857code">utils/iserv/<a href="https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fghc.mk%3A105%2F&data=02%7C01%7Csimonpj%40microsoft.com%7Cfe3793e59fa24b1203da08d829977b95%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637305077875360775&sdata=kPse46lUoIf%2FNmaU8TAVPDMPnSeL7bcBGmtFqpFlqzg%3D&reserved=0" target="_blank">ghc.mk:105</a>:
recipe for target 'utils/iserv/stage2_p/build/tmp/ghc-iserv-prof' failed<o:p></o:p></p>
<p class="m3956436459974820273m-778775121447864626m-8780510408337222857code">make[1]: *** [utils/iserv/stage2_p/build/tmp/ghc-iserv-prof] Error 1<o:p></o:p></p>
<p class="m3956436459974820273m-778775121447864626m-8780510408337222857code">make[1]: *** Waiting for unfinished jobs....<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">_______________________________________________<br>
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