<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hi Simon,</div><div><br></div><div>It's strange because I was not getting that before (say 2 weeks ago) and as far as I know I have not changed my build type (always been "quick").</div><div>I'll try to see if playing around with -O will change things and report back.</div><div><br></div><div>Thanks!<br><br>Alfredo</div><div><br>On 12/giu/2014, at 16:36, Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com">simonpj@microsoft.com</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Does not happen for me. Maybe you are compiling without –O (odd, but possible)? mapMaybeFB is mentioned only inside a RULE, so perhaps it’s regarded
as un-referenced without –O?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Simon<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D;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""> ghc-devs [<a href="mailto:ghc-devs-bounces@haskell.org">mailto:ghc-devs-bounces@haskell.org</a>]
<b>On Behalf Of </b>Alfredo Di Napoli<br>
<b>Sent:</b> 12 June 2014 12:31<br>
<b>To:</b> <a href="mailto:ghc-devs@haskell.org">ghc-devs@haskell.org</a><br>
<b>Subject:</b> Getting error about unused instances during "sh validate"<o:p></o:p></span></p>
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Hello guys,<br>
<br>
am I the only one to get the following when I run "sh validate"?<br>
<br>
<br>
libraries/base/Data/Maybe.hs:139:1: Warning:<br>
Defined but not used: ‘mapMaybeFB’<br>
<br>
<no location info>:<br>
Failing due to -Werror.<br>
make[1]: *** [libraries/base/dist-install/doc/html/base/base.haddock] Error 1<br>
make[1]: *** Waiting for unfinished jobs....<br>
make: *** [all] Error 2<br>
<br>
<br>
I'm working on this ticket, but I can't see how that can be related:<br>
<br>
<a href="https://ghc.haskell.org/trac/ghc/ticket/8226">https://ghc.haskell.org/trac/ghc/ticket/8226</a><br>
<br>
Thanks!<br>
Alfredo <o:p></o:p></p>
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