Hi Simon,
I have a hunch that the tcsetattr:... message is coming _after_ the segfault.
On Windows (not in a command window) you are probably trying to pop-up a
window, but what is running isn't a terminal, so the tcsetattr fails.
In other words, look for the cause of the segfault first.
Howard
________________________________
From: Simon Peyton Jones <simo...@microsoft.com>
To: Simon Peyton Jones <simo...@microsoft.com>; "ghc-devs@haskell.org"
<ghc-devs@haskell.org>
Sent: Friday, March 7, 2014 2:33 PM
Subject: RE: new Windows build problem
Is anyone able to help me here? I have no idea how to hunt down a seg-fault in
ghc-stage1.exe on Windows.
I thought of using git bisect to try to find the offending commit (though each
bisection takes a couple of hours since it has to be a clean build). But I was
defeated by the fact that haddock is a separate repo, and the task of finding
the haddock commit that matches the ghc commit defeated me. There are probably
other repos too, but they probably change less often.
In short, I’m stuck. I can use Linux at work, but when I’m on the move I just
have my Windows laptop. What is frustrating is that GHC used to build on
Windows just fine.
Does anyone feel more competent than me feel able to bisect their way to the
offending commit?
Thanks
Simon
From:ghc-devs [mailto:ghc-devs-boun...@haskell.org] On Behalf Of Simon Peyton
Jones
Sent: 06 March 2014 23:42
To: ghc-devs@haskell.org
Subject: RE: new Windows build problem
Actually, the two problems seem to be the same. A fresh build from scratch
yields
libraries/random/ghc.mk:5: recipe for target
'libraries/random/dist-install/build/System/Random.o' failed
make[1]: *** [libraries/random/dist-install/build/System/Random.o] Segmentation
fault
Then sniping the command line that tried to build Random.o yields
"inplace/bin/ghc-stage2.exe" -hisuf hi -osuf o -hcsuf hc -static -H32m -O
-Werror -Wall -H64m -O0 -package-name random-1.0.1.1 -hide-all-packages -i
-ilibraries/random/. -ilibraries/random/dist-install/build
-ilibraries/random/dist-install/build/autogen
-Ilibraries/random/dist-install/build
-Ilibraries/random/dist-install/build/autogen -Ilibraries/random/.
-optP-include -optPlibraries/random/dist-install/build/autogen/cabal_macros.h
-package base-4.7.0.0 -package time-1.4.2 -O2 -XHaskell98 -XCPP -O2 -O
-dcore-lint -fno-warn-amp -fno-warn-deprecated-flags -dcore-lint
-no-user-package-db -rtsopts -odir libraries/random/dist-install/build
-hidir libraries/random/dist-install/build -stubdir
libraries/random/dist-install/build -c libraries/random/./System/Random.hs -o
libraries/random/dist-install/build/System/Random.o
bash: [6536: 1 (255)] tcsetattr: Inappropriate ioctl for device
io
So this ioctl thing seems to be reported as a seg fault by the make system.
Running the same command from a ‘cmd’ window does give a seg-fault pop-up
window. Alas.
Running with –dshow-passes shows that it happens during code generation,
*** CorePrep:
Result size of CorePrep = {terms: 1,214, types: 912, coercions: 52}
*** Core Linted result of CorePrep:
*** Stg2Stg:
*** CodeOutput:
*** New CodeGen:
*** CPSZ:
*** CPSZ:
I am totally stuck.
Simon
From:Simon Peyton Jones
Sent: 06 March 2014 22:11
To: ghc-devs@haskell.org
Subject: new Windows build problem
Sigh. Totally new problem with building GHC (HEAD) on Windows..
"inplace/bin/ghc-stage2.exe" -hisuf hi -osuf o -hcsuf hc -static -H32m -O
-Werror -Wall -H64m -O0 -package-name haskell98-2.0.0.3 -hide-all-packages
-i -ilibraries/haskell98/. -ilibraries/haskell98/dist-install/build
-ilibraries/haskell98/dist-install/build/autogen
-Ilibraries/haskell98/dist-install/build
-Ilibraries/haskell98/dist-install/build/autogen -Ilibraries/haskell98/.
-optP-include
-optPlibraries/haskell98/dist-install/build/autogen/cabal_macros.h -package
array-0.5.0.0 -package base-4.7.0.0 -package directory-1.2.0.2 -package
old-locale-1.0.0.6 -package old-time-1.1.0.2 -package process-1.2.0.0 -package
time-1.4.2 -Wall -XHaskell98 -O2 -O -dcore-lint -fno-warn-amp
-fno-warn-deprecated-flags -dcore-lint -no-user-package-db -rtsopts -odir
libraries/haskell98/dist-install/build -hidir
libraries/haskell98/dist-install/build -stubdir
libraries/haskell98/dist-install/build -c libraries/haskell98/./Directory.hs
-o
libraries/haskell98/dist-install/build/Directory.o
bash: [6536: 1 (255)] tcsetattr: Inappropriate ioctl for device
HEAD $
What on earth is this ioctl stuff?
The above is repeatable; same command line, same result.
But I’m also getting random seg-faults when building libraries with the stage2
compiler
libraries/random/ghc.mk:5: recipe for target
'libraries/random/dist-install/build/System/Random.o' failed
make[1]: *** [libraries/random/dist-install/build/System/Random.o] Segmentation
fault
This is NOT repeatable. Saying ‘make’ again gets further.
Any ideas?
Simon
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