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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Friends<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">I’m seeing test-suite wobbles like these:<o:p></o:p></span></p>
<p class="Code">Unexpected failures:<o:p></o:p></p>
<p class="Code"> /tmp/ghctest-9ez8i8lx/test spaces/./ghci.debugger/scripts/break006.run break006 [bad stdout] (ghci)<o:p></o:p></p>
<p class="Code"> /tmp/ghctest-9ez8i8lx/test spaces/./ghci.debugger/scripts/hist001.run hist001 [bad stdout] (ghci)<o:p></o:p></p>
<p class="Code"> /tmp/ghctest-9ez8i8lx/test spaces/./ghci.debugger/scripts/hist002.run hist002 [bad stdout] (ghci)<o:p></o:p></p>
<p class="Code"> /tmp/ghctest-9ez8i8lx/test spaces/./profiling/should_run/scc001.run scc001 [bad profile] (profasm)<o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">It turns out that they are all variations in the order of output, e.g.
<o:p></o:p></span></p>
<p class="Code">--- ./scripts/break006.run/break006.stdout.normalised 2018-05-01 13:20:13.297808002 +0100<o:p></o:p></p>
<p class="Code">+++ ./scripts/break006.run/break006.run.stdout.normalised 2018-05-01 13:20:13.297808002 +0100<o:p></o:p></p>
<p class="Code">@@ -4,14 +4,14 @@<o:p></o:p></p>
<p class="Code">x :: Integer = 1<o:p></o:p></p>
<p class="Code">xs :: [Integer] = [2,3]<o:p></o:p></p>
<p class="Code">xs :: [Integer] = [2,3]<o:p></o:p></p>
<p class="Code">-f :: Integer -> a = _<o:p></o:p></p>
<p class="Code">x :: Integer = 1<o:p></o:p></p>
<p class="Code">+f :: Integer -> a = _<o:p></o:p></p>
<p class="Code">_result :: [a] = _<o:p></o:p></p>
<p class="Code">y = (_t1::a)<o:p></o:p></p>
<p class="Code">y = 2<o:p></o:p></p>
<p class="Code">xs :: [Integer] = [2,3]<o:p></o:p></p>
<p class="Code">-f :: Integer -> Integer = _<o:p></o:p></p>
<p class="Code">x :: Integer = 1<o:p></o:p></p>
<p class="Code">+f :: Integer -> Integer = _<o:p></o:p></p>
<p class="Code">_result :: [Integer] = _<o:p></o:p></p>
<p class="Code">y :: Integer = 2<o:p></o:p></p>
<p class="Code">_t1 :: Integer = 2<o:p></o:p></p>
<p class="Code">*** unexpected failure for break006(ghci)<o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">I’ve seen this go to and fro recently. It looks as if the output is not deterministic somehow. (The order in which the bindings are printed is immaterial.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Does this happen for others? Does the master CI build show this problem?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">I don’t know whether to commit these changes, because I don’t know if it affects anyone else. And it’s certainly tiresome for me.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Any ideas?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Simon<o:p></o:p></span></p>
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