Test suite fails on powerpc
nomeata opened this issue · comments
Hi,
when trying to build this on powerpc with GHC-7.10, I observe sporadic test failures. Unfortunately, Cabal is not very chatty, so I cannot say much:
Running debian/hlibrary.setup test --builddir=dist-ghc --show-details=always
Running 1 test suites...
Test suite test-monad-par: RUNNING...
Test suite test-monad-par: FAIL
Test suite logged to: dist-ghc/test/monad-par-0.3.4.7-test-monad-par.log
0 of 1 test suites (0 of 1 test cases) passed.
The fact that there is no output at all might indicate a GHC bug, so I’m pinging @erikd because often architecture-specific bugs are only ever fixed if he is involved...
There are at least two important fixes that have been added in 7.10.3 that are not in 7.10.2.
I have a patched ghc-7.10.2 with which these test pass without a problem.
This is GHC-7.10.3-rc1.
But if the tests pass for you, then maybe it is the Cabal bug that breaks test suites with more output than fits into a buffer? But I thought that would only occur when there is no threaded runtime that can be used for setup, and here setup is compiled with -threaded :-(
Oh, yes, I see its ghc-7.10.2.20151030.
Initially I ran the test as dist/build/test-monad-par/test-monad-par because I wanted to see the errors but there were none. I just ran it now as cabal test and that too passes with flying colours.
Is it possible to get the file dist-ghc/test/monad-par-0.3.4.7-test-monad-par.log ?
Is it possible to get the file dist-ghc/test/monad-par-0.3.4.7-test-monad-par.log ?
Not easily, but according to the code path in Cabal, it will not contain anything that is not printed to stdout; in particular, the output of the test suite is empty.
Dang! I consider this a bug in cabal!
Is the ghc-7.10.2.20151030 package available somewhere?
Yes, that’d be haskell/cabal#2398.
Although I thought it would only happen without -threaded.
No, I meant that cabal redirecting/hiding test output is a bug :-).
Then also see haskell/cabal#2911 :-)
Well done!
I cooked up a patch to implement haskell/cabal#2911, which works around haskell/cabal#2398, and I’m going to upload a patched ghc package containing this patch to Debian soon.
Ok, the Cabal patch resolved this issue. Sorry, Simon, for the noise on your bug tracker:
https://buildd.debian.org/status/fetch.php?pkg=haskell-monad-par&arch=powerpc&ver=0.3.4.7-6%2Bb1&stamp=1446764468