<div><div dir="auto">Hi Simon,</div><div dir="auto"><br></div><div dir="auto">for me it happens on many files that are compiled with<br></div><div dir="auto"><br></div><div dir="auto"> $ make <span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)">GhcStage2HcOpts="-O1 -g"</span></div><div dir="auto"><span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)"><br></span></div><div dir="auto"><span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)">while the stage1 compiler is active.</span></div><div dir="auto"><span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)"><br></span></div><div dir="auto"><span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)">Tomorrow I can add a concrete invocation.</span></div><div dir="auto"><span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)"><br></span></div><div dir="auto"><span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)">Cheers,</span></div><div dir="auto"><span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)"><br></span></div><div dir="auto"><span style="color:rgb(49,49,49);word-spacing:1px;background-color:rgb(255,255,255)"> Gabor</span></div><br><div class="gmail_quote"><div>Em seg, 21 de ago de 2017 às 17:49, Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com">simonpj@microsoft.com</a>> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">| Oh dear, then I've really misunderstood the intent of this warning. I've<br>
| been noticing these during the GHC build for quite some time now.<br>
<br>
Really?<br>
<br>
After stumbling on #14142, I removed -dno-debug-output from mk/flavours/<a href="http://validate.mk" rel="noreferrer" target="_blank">validate.mk</a> and re-validated. Not a single occurrence of<br>
<br>
| > | WARNING: file compiler/simplCore/OccurAnal.hs, line 2695<br>
| > | OccurAnal failed to rediscover join point(s): [go58_akKa]<br>
<br>
How can I reproduce what you are seeing?<br>
<br>
Simon<br>
<br>
| -----Original Message-----<br>
| From: Ben Gamari [mailto:<a href="mailto:ben@smart-cactus.org" target="_blank">ben@smart-cactus.org</a>]<br>
| Sent: 19 August 2017 16:54<br>
| To: Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>>; Gabor Greif<br>
| <<a href="mailto:ggreif@gmail.com" target="_blank">ggreif@gmail.com</a>><br>
| Cc: ghc-devs <<a href="mailto:ghc-devs@haskell.org" target="_blank">ghc-devs@haskell.org</a>><br>
| Subject: RE: Stg-lint and bootstrapping (fails?)<br>
|<br>
| Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" target="_blank">simonpj@microsoft.com</a>> writes:<br>
|<br>
| > | WARNING: file compiler/simplCore/OccurAnal.hs, line 2695<br>
| > | OccurAnal failed to rediscover join point(s): [go58_akKa]<br>
| ><br>
| > That shouldn't happen! If you can make a repro case, please open a<br>
| ticket.<br>
| ><br>
| Oh dear, then I've really misunderstood the intent of this warning. I've<br>
| been noticing these during the GHC build for quite some time now.<br>
|<br>
| Cheers,<br>
|<br>
| - Ben<br>
<br>
</blockquote></div></div>