#5856: numrun012 test fails on i686 works on x86_64
--------------------------+-------------------------------------------------
Reporter: td123 | Owner:
Type: bug | Status: new
Priority: normal | Component: Test Suite
Version: 7.4.1 | Keywords: numrun012 unexpected failure
Os: Linux | Architecture: x86
Failure: None/Unknown | Testcase: numrun012
Blockedby: | Blocking:
Related: |
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I have built ghc on both x86_64 and i686 for archlinux.
make test has no unexpected results on x86_64.
On i686, make test has only the following unexpected failure:
{{{
=====> numrun012(normal) 831 of 3160 [0, 0, 0]
cd ./numeric/should_run && '/build/src/ghc-7.4.1/inplace/bin/ghc-stage2'
-fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output -no-user-package-
conf -rtsopts -fno-ghci-history -o numrun012 numrun012.hs
>numrun012.comp.stderr 2>&1
cd ./numeric/should_run && ./numrun012 </dev/null >numrun012.run.stdout
2>numrun012.run.stderr
Actual stdout output differs from expected:
--- ./numeric/should_run/numrun012.stdout 2012-02-01
18:11:16.000000000 +0000
+++ ./numeric/should_run/numrun012.run.stdout 2012-02-07
23:06:57.413192194 +0000
@@ -1,4 +1,4 @@
-[0,1,5,9,10,14,31,31,32,32,32,32,33]
+[0,1,5,9,10,14,31,31,31,32,32,32,33]
-2.147483648e9
-2.1474836e9
-2.147483648e9
*** unexpected failure for numrun012(normal)
}}}
I think I got the failure down to one line:
The following returns 31.000000000000004 on x86_64 and 31.0 on i686:
{{{
logBase 2 (fromIntegral 2^31) :: Double
}}}
Please let me know if you need anything else from me.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5856>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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